From clock at twibright.com Wed Aug 1 09:43:25 2007 From: clock at twibright.com (Karel Kulhavy) Date: Wed, 1 Aug 2007 10:43:25 +0200 Subject: [Ronja] Twister 2 In-Reply-To: <46AFA07A.7010005@centrum.cz> References: <20070725152454.GA21421@kestrel.barix.local> <46AFA07A.7010005@centrum.cz> Message-ID: <20070801084325.GA11696@kestrel.barix.local> On Tue, Jul 31, 2007 at 10:50:02PM +0200, Jakub Michn?k wrote: > zdravim > > pomalu se poustim do stavby twistru dva. chci se zeptat proc se pouzil > tak drahy stabilizator a proc tam neni stary dobry znamy 7805? a pak ty Spinanej stabilizator je tam aby to netopilo a nemelo takovej odber. > civky 47nH ? je to tam nutne? v katalogu GM jsem je nenasel a vubec, tak > mala indukcnost by sla vytvorit na DPS nebo ne? jeste je skoda ze se No to asi jo, ale nezabirala by tam pak moc mista? Jak velka by byla? Kdyz tam ty civky nedas, tak to chodit taky asi bude, ale muze to rusit televizi apod. - ja jsem predelal Twister na Twister2 prave pote, co si nekdo stezoval, ze to rusi televizi. Maji v tom katalogu nejakou vyssi hodnotu? > nevleze do AH-303 :(... kdo ste uz twistra dva staveli a jake s nim mate Jakakoliv predem uzavrena krabicka neni vhodna, je potreba to naletovat primo na tistak kvuli stineni. CL< > zkusenosti? > > diky, Kubas > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From eric.e.carson at gmail.com Thu Aug 2 02:17:23 2007 From: eric.e.carson at gmail.com (Eric Carson) Date: Wed, 1 Aug 2007 21:17:23 -0400 Subject: [Ronja] US source for drop in replacement of HPWT-BD00-F4000 Message-ID: http://www.ledtronics.com/ds/L200-E3K/ Link beneath "High-Flux SpiderLED Discretes" From clock at twibright.com Thu Aug 2 11:46:01 2007 From: clock at twibright.com (Karel Kulhavy) Date: Thu, 2 Aug 2007 12:46:01 +0200 Subject: [Ronja] US source for drop in replacement of HPWT-BD00-F4000 In-Reply-To: References: Message-ID: <20070802104601.GA13790@kestrel.barix.local> On Wed, Aug 01, 2007 at 09:17:23PM -0400, Eric Carson wrote: > http://www.ledtronics.com/ds/L200-E3K/ > > Link beneath "High-Flux SpiderLED Discretes" It has only 35mA forward current. CL< > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From clock at twibright.com Thu Aug 2 14:24:48 2007 From: clock at twibright.com (Karel Kulhavy) Date: Thu, 2 Aug 2007 15:24:48 +0200 Subject: [Ronja] US source for drop in replacement of HPWT-BD00-F4000 In-Reply-To: <1186054402.480027990b804@mail.bg> References: <20070802104601.GA13790@kestrel.barix.local> <1186054402.480027990b804@mail.bg> Message-ID: <20070802132448.GA10994@kestrel.barix.local> On Thu, Aug 02, 2007 at 02:33:22PM +0300, stoiko at mail.bg wrote: > what are the implications of "only 35mA" The type designator is "SPL300CWE4K", WE4K like weak, lol :) If it has the same efficiency as the Lumileds one, then it will have only 50% of the output that means 70% of the range. More likely it has worse efficiency because Lumileds are really good if not the best in the world. If someone wants to take the pain calculating those annoying millicandelas into lumens by translating the spatial graph into a numeric table and then integrating it with GNU R and calculating the lumens and quanta per symbol and steradian, then the figure could be calculated precisely. I also suspect the pattern to be quite different from Lumileds, so it might need to be measured with the lenses again using Ronja Benchpress. I wonder what this Ledtronics is. Ledtronics doesn't even have an article on Wikipedia. Their homepage style makes an impression of a garage company on me. What's the problem with Lumileds? Ondrej Tesar used to have them and send them by post, doesn't he have then anymore? CL< > > > ????? ?? ????? ?? Karel Kulhavy : > > > On Wed, Aug 01, 2007 at 09:17:23PM -0400, Eric Carson > > wrote: > > > http://www.ledtronics.com/ds/L200-E3K/ > > > > > > Link beneath "High-Flux SpiderLED Discretes" > > > > It has only 35mA forward current. > > > > CL< > > > > > > -- > > > Twibright Ronja mailing list http://ronja.twibright.com > > > Ronja at lists.pointless.net > > > http://pointless.net/mailman/listinfo/ronja > > > > -- > > Twibright Ronja mailing list http://ronja.twibright.com > > Ronja at lists.pointless.net > > http://pointless.net/mailman/listinfo/ronja > > > > > > > > > ----------------------------- > > ??? ADSL ???? 2 ???? ??-???? ?? ????? > 2 Mb ??? ADSL ???? ?? 15,49 ??/???. > ?????? ?? ? ?????????? ?? ???, ?? 0800 100 ??? ? ????????????? ?????. > http://www.btc.bg/bg/more_fast_adsl.php > From clock at twibright.com Fri Aug 3 00:35:23 2007 From: clock at twibright.com (Karel Kulhavy) Date: Fri, 3 Aug 2007 01:35:23 +0200 Subject: [Ronja] Upgraded logo Message-ID: <20070802233523.GA10598@kestrel.barix.local> I have upgraded the Ronja logo which is on every Ronja webpage in the upper left corner. The font is changed. Do you think now it looks better? CL< From schum at seznam.cz Fri Aug 3 15:28:16 2007 From: schum at seznam.cz (Schumann Miroslav) Date: Fri, 03 Aug 2007 16:28:16 +0200 Subject: [Ronja] Twister 2 In-Reply-To: <46AFA07A.7010005@centrum.cz> References: <20070725152454.GA21421@kestrel.barix.local> <46AFA07A.7010005@centrum.cz> Message-ID: <46B33B80.4010102@seznam.cz> Jakub Michn?k napsal(a): > zdravim > > pomalu se poustim do stavby twistru dva. chci se zeptat proc se pouzil > tak drahy stabilizator a proc tam neni stary dobry znamy 7805? a pak ty > civky 47nH ? je to tam nutne? v katalogu GM jsem je nenasel a vubec, tak > mala indukcnost by sla vytvorit na DPS nebo ne? jeste je skoda ze se > nevleze do AH-303 :(... kdo ste uz twistra dva staveli a jake s nim mate > zkusenosti? > > diky, Kubas > > ahoj prave se take poustim do stavby, po naletovani 1 smd brouka bych rekl, ze plosky pro nohy mohly byt o neco vetsi, vzdyt to osazujem rucne, aspon kdyz delam nejaky smd tistak tak si ty plosky maluju vetsi Mirek From pkyaduvanshi at gmail.com Fri Aug 3 20:16:01 2007 From: pkyaduvanshi at gmail.com (Pramod yaduvanshi) Date: Fri, 3 Aug 2007 19:16:01 +0000 Subject: [Ronja] Input impedance Message-ID: <50d3ad760708031216r6ebfcf29v296496e5fcea8ad8@mail.gmail.com> I want to change the cable from Twsiter2 to Tx and Rx from 75 ohms to 50 ohms. what are the changes required in Tx and Rx circuits? Has any one tried out exisiting system with 50 ohm cables how much is the degradation? Will i have to modify the twsiter circuit as well in case of 50 Ohms ? Is it advised to use matching baloons? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20070803/aaa8d566/attachment.html From ladmanj at volny.cz Fri Aug 3 21:33:31 2007 From: ladmanj at volny.cz (Jakub Ladman) Date: Fri, 3 Aug 2007 22:33:31 +0200 Subject: [Ronja] Input impedance In-Reply-To: <50d3ad760708031216r6ebfcf29v296496e5fcea8ad8@mail.gmail.com> References: <50d3ad760708031216r6ebfcf29v296496e5fcea8ad8@mail.gmail.com> Message-ID: <200708032233.31882.ladmanj@volny.cz> Dne p?tek 03 srpen 2007 21:16 Pramod yaduvanshi napsal(a): > I want to change the cable from Twsiter2 to Tx and Rx from 75 ohms to 50 > ohms. what are the changes required in Tx and Rx circuits? Has any one > tried out exisiting system with 50 ohm cables how much is the degradation? > Will i have to modify the twsiter circuit as well in case of 50 Ohms ? > Is it advised to use matching baloons? Oh, its silly idea to use a Balloons, a play-ground is a better place to use it, i think :-) But nor balun is not necesary, it is proven that ronja works with 50Ohm cable well. You may recompute the resistors at both ends of coaxes to match 50Ohms exactly, but in case of not very long coaxes it is really not necesary. Jakub Ladman From clock at twibright.com Sat Aug 4 09:41:48 2007 From: clock at twibright.com (Karel Kulhavy) Date: Sat, 4 Aug 2007 10:41:48 +0200 Subject: [Ronja] Input impedance In-Reply-To: <50d3ad760708031216r6ebfcf29v296496e5fcea8ad8@mail.gmail.com> References: <50d3ad760708031216r6ebfcf29v296496e5fcea8ad8@mail.gmail.com> Message-ID: <20070804084147.GA10126@kestrel.barix.local> On Fri, Aug 03, 2007 at 07:16:01PM +0000, Pramod yaduvanshi wrote: > I want to change the cable from Twsiter2 to Tx and Rx from 75 ohms to 50 > ohms. what are the changes required in Tx and Rx circuits? Has any one tried > out exisiting system with 50 ohm cables how much is the degradation? Will i You don't have to change it at all. Since the impedance is matched on both sides, the reflections are so small it shouldn't matter. CL< > have to modify the twsiter circuit as well in case of 50 Ohms ? > Is it advised to use matching baloons? > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From clock at twibright.com Sat Aug 4 09:43:55 2007 From: clock at twibright.com (Karel Kulhavy) Date: Sat, 4 Aug 2007 10:43:55 +0200 Subject: [Ronja] Twister 2 In-Reply-To: <46B33B80.4010102@seznam.cz> References: <20070725152454.GA21421@kestrel.barix.local> <46AFA07A.7010005@centrum.cz> <46B33B80.4010102@seznam.cz> Message-ID: <20070804084355.GB10126@kestrel.barix.local> On Fri, Aug 03, 2007 at 04:28:16PM +0200, Schumann Miroslav wrote: > Jakub Michn?k napsal(a): > > zdravim > > > > pomalu se poustim do stavby twistru dva. chci se zeptat proc se pouzil > > tak drahy stabilizator a proc tam neni stary dobry znamy 7805? a pak ty > > civky 47nH ? je to tam nutne? v katalogu GM jsem je nenasel a vubec, tak > > mala indukcnost by sla vytvorit na DPS nebo ne? jeste je skoda ze se > > nevleze do AH-303 :(... kdo ste uz twistra dva staveli a jake s nim mate > > zkusenosti? > > > > diky, Kubas > > > > > ahoj > > prave se take poustim do stavby, po naletovani 1 smd brouka bych rekl, > ze plosky pro nohy mohly byt o neco vetsi, vzdyt to osazujem rucne, > aspon kdyz delam nejaky smd tistak tak si ty plosky maluju vetsi Sirsi nebo delsi? CL< > > Mirek > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From pkyaduvanshi at gmail.com Sat Aug 4 18:04:41 2007 From: pkyaduvanshi at gmail.com (Pramod yaduvanshi) Date: Sat, 4 Aug 2007 17:04:41 +0000 Subject: [Ronja] Increasing the speed Message-ID: <50d3ad760708041004g6e8b76d3ie70751d8fef1b6e5@mail.gmail.com> I had a doubt , if i design a new twister for 100MBPS , will the existing electronics of the Tx and Rx support speeds upto 100 MBPS ? Basically has any one tried out giving a 100MHz inoput to Tx say from a signal generator and tried Recieveing it with exisitng reciever and observe it on an oscilloscope ? PK Yaduvanshi -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20070804/944fc261/attachment.html From srnkap at extranetplus.cz Sat Aug 4 21:27:21 2007 From: srnkap at extranetplus.cz (Pavel Srnka) Date: Sat, 4 Aug 2007 22:27:21 +0200 Subject: [Ronja] Increasing the speed References: <50d3ad760708041004g6e8b76d3ie70751d8fef1b6e5@mail.gmail.com> Message-ID: <001901c7d6d5$dc3ef4c0$0201a8c0@home885a295dd5> by me taky zajimalo jestli to jde ? co na to clock ? ----- Original Message ----- From: Pramod yaduvanshi To: ronja na lists.pointless.net Sent: Saturday, August 04, 2007 7:04 PM Subject: [Ronja] Increasing the speed I had a doubt , if i design a new twister for 100MBPS , will the existing electronics of the Tx and Rx support speeds upto 100 MBPS ? Basically has any one tried out giving a 100MHz inoput to Tx say from a signal generator and tried Recieveing it with exisitng reciever and observe it on an oscilloscope ? PK Yaduvanshi ------------------------------------------------------------------------------ -- Twibright Ronja mailing list http://ronja.twibright.com Ronja na lists.pointless.net http://pointless.net/mailman/listinfo/ronja ------------- dal?? ??st --------------- HTML p??loha byla odstran?na... URL: http://pointless.net/pipermail/ronja/attachments/20070804/f79eaeaa/attachment.html From jdb at lartmaker.nl Sat Aug 4 21:32:20 2007 From: jdb at lartmaker.nl (J.D. Bakker) Date: Sat, 4 Aug 2007 22:32:20 +0200 Subject: [Ronja] Increasing the speed In-Reply-To: <50d3ad760708041004g6e8b76d3ie70751d8fef1b6e5@mail.gmail.com> References: <50d3ad760708041004g6e8b76d3ie70751d8fef1b6e5@mail.gmail.com> Message-ID: >I had a doubt , if i design a new twister for 100MBPS , will the >existing electronics of the Tx and Rx support speeds upto 100 MBPS ? No. JDB. -- LART. 250 MIPS under one Watt. Free hardware design files. http://www.lartmaker.nl/ From petr.cipis at tiscali.cz Sat Aug 4 21:36:46 2007 From: petr.cipis at tiscali.cz (Cipis) Date: Sat, 4 Aug 2007 22:36:46 +0200 Subject: [Ronja] Increasing the speed References: <50d3ad760708041004g6e8b76d3ie70751d8fef1b6e5@mail.gmail.com> <001901c7d6d5$dc3ef4c0$0201a8c0@home885a295dd5> Message-ID: <004101c7d6d7$2d51d980$5046a8c0@cipis.net> Nejde to ... Kral ma hracky na 25Mbps, pouziva stavajici prijimac a vysilac, tusim jen nejake drobne upravy tam dela. Cipis ----- Original Message ----- From: "Pavel Srnka" To: "Twibright Ronja" Sent: Saturday, August 04, 2007 10:27 PM Subject: Re: [Ronja] Increasing the speed by me taky zajimalo jestli to jde ? co na to clock ? ----- Original Message ----- From: Pramod yaduvanshi To: ronja na lists.pointless.net Sent: Saturday, August 04, 2007 7:04 PM Subject: [Ronja] Increasing the speed I had a doubt , if i design a new twister for 100MBPS , will the existing electronics of the Tx and Rx support speeds upto 100 MBPS ? Basically has any one tried out giving a 100MHz inoput to Tx say from a signal generator and tried Recieveing it with exisitng reciever and observe it on an oscilloscope ? PK Yaduvanshi ------------------------------------------------------------------------------ -- Twibright Ronja mailing list http://ronja.twibright.com Ronja na lists.pointless.net http://pointless.net/mailman/listinfo/ronja -------------------------------------------------------------------------------- > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja na lists.pointless.net > http://pointless.net/mailman/listinfo/ronja > From arunk at speedpost.net Sun Aug 5 06:23:35 2007 From: arunk at speedpost.net (Arun Krishnan) Date: Sun, 05 Aug 2007 10:53:35 +0530 Subject: [Ronja] Increasing the speed In-Reply-To: <50d3ad760708041004g6e8b76d3ie70751d8fef1b6e5@mail.gmail.com> References: <50d3ad760708041004g6e8b76d3ie70751d8fef1b6e5@mail.gmail.com> Message-ID: <1186291415.16772.1203786845@webmail.messagingengine.com> TX diode tops out at 25Mbps. RX diode can do 100Mbps I think. Or there are ones available that can. Regards, Arun On Sat, 4 Aug 2007 17:04:41 +0000, "Pramod yaduvanshi" said: > I had a doubt , if i design a new twister for 100MBPS , will the existing > electronics of the Tx and Rx support speeds upto 100 MBPS ? Basically has > any one tried out giving a 100MHz inoput to Tx say from a signal > generator > and tried Recieveing it with exisitng reciever and observe it on an > oscilloscope ? > PK Yaduvanshi From clock at twibright.com Sun Aug 5 09:28:31 2007 From: clock at twibright.com (Karel Kulhavy) Date: Sun, 5 Aug 2007 10:28:31 +0200 Subject: [Ronja] Increasing the speed In-Reply-To: <50d3ad760708041004g6e8b76d3ie70751d8fef1b6e5@mail.gmail.com> References: <50d3ad760708041004g6e8b76d3ie70751d8fef1b6e5@mail.gmail.com> Message-ID: <20070805082831.GA21734@kestrel.barix.local> On Sat, Aug 04, 2007 at 05:04:41PM +0000, Pramod yaduvanshi wrote: > I had a doubt , if i design a new twister for 100MBPS , will the existing > electronics of the Tx and Rx support speeds upto 100 MBPS ? Basically has > any one tried out giving a 100MHz inoput to Tx say from a signal generator > and tried Recieveing it with exisitng reciever and observe it on an > oscilloscope ? It doesn't make sense to try this. The RX and TX are targeted for a bandwidth of 16MHz, allegedly optimal for 10Mbps Manchester. CL< > PK Yaduvanshi > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From pkyaduvanshi at gmail.com Mon Aug 6 06:56:38 2007 From: pkyaduvanshi at gmail.com (Pramod yaduvanshi) Date: Mon, 6 Aug 2007 11:26:38 +0530 Subject: [Ronja] BERTEST Message-ID: <50d3ad760708052256i410743d6rf205c1f3c7f272d4@mail.gmail.com> When i run the bertest on my machine i am getting this error. I think something wrong in the script of the file analyze .Has any one else encountered this problem? [root at fedoramachine bertest-experimental]# ./analyze rx1.dat ./analyze: line 4: R: command not found Postscript output was saved into rx1.ps Converting Postscript to PDF...ERROR: /undefinedfilename in (rx1.ps) Operand stack: Execution stack: %interp_exit .runexec2 --nostringval-- --nostringval-- --nostringval-- 2 %stopped_push --nostringval-- --nostringval-- --nostringval-- false 1 %stopped_push Dictionary stack: --dict:1119/1686(ro)(G)-- --dict:0/20(G)-- --dict:80/200(L)-- Current allocation mode is local Last OS error: 2 ESP Ghostscript 815.02: Unrecoverable error, exit code 1 done. PDF output was saved into rx1.pdf PK Yaduvanshi -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20070806/7486561a/attachment.html From clock at twibright.com Wed Aug 8 09:28:03 2007 From: clock at twibright.com (Karel Kulhavy) Date: Wed, 8 Aug 2007 10:28:03 +0200 Subject: [Ronja] Ronja, patch mereni RSSI v prijimaci In-Reply-To: <1200.1850-9585-194104426-1186498448@post.cz> References: <1200.1850-9585-194104426-1186498448@post.cz> Message-ID: <20070808082803.GA18511@kestrel.barix.local> On Tue, Aug 07, 2007 at 04:54:08PM +0200, Petr Seliger wrote: > Zdar, > poresil jsem kolisani napeti na vystupu RSSI v prijimaci ,kdyz se vedle zapne > vysilacka. Problem je zpusoben tim, ze to co se naidukuje do dratu vedoucich > k multimetru se usmernuje na schottkyho diodach v RX. Jednoduse jsem tedy > pridal primitivni filtr na vystup, jak je nakresleno v prilozenem schematu. > Tlumivka je vhodna na feritovem jadre s indukcnosti kolem 1uH, spis mensi, > dulezita je vysoka hodnota vlastni rezonanacni frekvence SRF. Dobre jsou nad > cca 200MHz, to spolehlive vyfiltruje i PMR vysilacky v pasmu 435MHz. > Kondenzator z hmoty NPO a co nejkratsi nozicky. Po uprave jsem zkousel > antenu vysilacky prilozit primo na kablik a udaj kolisa max. o par mV. Pred > upravou klidne i stovky mV. Aha tak to je maso, to je dobre ze to nekdo odladil a ozkousel :) Pisu si to do TODO listu to tam pridat. CL< > > Petr Seliger From clock at twibright.com Thu Aug 9 09:34:31 2007 From: clock at twibright.com (Karel Kulhavy) Date: Thu, 9 Aug 2007 10:34:31 +0200 Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? In-Reply-To: <000501c7da55$8df46d30$3c0a0a0a@misato2> References: <000b01c70176$f6c087d0$3c0a0a0a@misato2> <20061106131933.GA25208@kestrel.twibright.com> <000501c7da55$8df46d30$3c0a0a0a@misato2> Message-ID: <20070809083431.GA26490@kestrel.barix.local> On Thu, Aug 09, 2007 at 01:18:58AM -0600, Colin Stanners wrote: > I saw in Make magazine 10 an article about modifying dvd-burner lasers > to use as "laser pointers". These devices work at ~200mw and must have > very impressive specs speed-wise to be able to burn DVDs... since > a big problem for 10mbit RONJA is getting fast and inexpensive RX/TX > hardware, would these work? Well yes a 200mW laser diode would be technically fine. But you need quite careful optical and mechanical setup to ensure eye safety even in case of failure. Remember Ronja is operating in an open space. But do you need to buy a DVD burner and smash it with a hammer? Why not just go to an electronic part store and buy just the 200mW diode? > > Also a story just appeared on Slashdot about this, which reminded me to > send you this message... they may have more details. I didn't even watch the video. The guy is an idiot. If he hits someone's eye, either directly or with an accidental reflection, the target gets a permanent dead spot burned out in his retina. Then the damaged one sues his ass off and Mr. Laser goes to jail for permanent health damage. Someone should call the police now because this is endangering the public health even if performed at home - you can burn out an eye of a by-passer in the street through the window. It's in the public health interest to have this guy arrested before someone gets handicapped from this. Next time slashdot could feature a mad gunman or a guy throwing grenades in the street. CL< > > > -C From asteri_x at freemail.hu Thu Aug 9 19:40:08 2007 From: asteri_x at freemail.hu (=?UTF-8?B?R3l1cmvDsyBNYXJ0aW4=?=) Date: Thu, 09 Aug 2007 20:40:08 +0200 Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? In-Reply-To: <20070809083431.GA26490@kestrel.barix.local> References: <000b01c70176$f6c087d0$3c0a0a0a@misato2> <20061106131933.GA25208@kestrel.twibright.com> <000501c7da55$8df46d30$3c0a0a0a@misato2> <20070809083431.GA26490@kestrel.barix.local> Message-ID: <46BB5F88.2030607@freemail.hu> Hi All! I got a lot of bad DVD burners because mostly the LD is not broken and I wanted to extract these and use for the 100Mbit/s network. I then faced the big problem of finding out, how the leads have to be connected. So if anybody wants to use the LD of a DVD burner, first test it out _without_ dissassembling the pickup head! Also the currents would be interresting. It is not true, that evey burner diode has the same pinout. The fact is, if you don't collimate laser diode light, it is almost like a very bright LED. So you have a point-like very high power light source. If you only collimate it with the 130mm diameter lens, then you will have a beam power density of: p= 200mW / (65^2 * pi ) = 0.015 mW/mm^2 Let's take an eye, with a maximum open lens iris of 10mm diameter, (A = 78,5mm^2). That is a total power of P= A*p = 1.183 mW Here we see, that with a perfectly collimated beam, the power is slightly above the 1 mW Class-I limit at the exit of the tube at a 130mm assembly. So if you are looking into it, then normally there would not be any damage, because the iris is never open at 10mm. Also the laser doesn't need to be operated at the highest power. Only use as many power as you really need to establish connection. The real problems begin, if your setting gets wrong, and the beam gets focussed! Also dont use it with smaller lenses! The power density would increase! This guy, using the flashlight lens, which has a diameter of 20mm, is an idiot. That thing is really irresponsible. bye, Martin Karel Kulhavy ?rta: > On Thu, Aug 09, 2007 at 01:18:58AM -0600, Colin Stanners wrote: > >> I saw in Make magazine 10 an article about modifying dvd-burner lasers >> to use as "laser pointers". These devices work at ~200mw and must have >> very impressive specs speed-wise to be able to burn DVDs... since >> a big problem for 10mbit RONJA is getting fast and inexpensive RX/TX >> hardware, would these work? >> > > Well yes a 200mW laser diode would be technically fine. But you need quite > careful optical and mechanical setup to ensure eye safety even in case of > failure. Remember Ronja is operating in an open space. > > But do you need to buy a DVD burner and smash it with a hammer? Why not just > go to an electronic part store and buy just the 200mW diode? > > >> Also a story just appeared on Slashdot about this, which reminded me to >> send you this message... they may have more details. >> > > I didn't even watch the video. The guy is an idiot. If he hits someone's eye, > either directly or with an accidental reflection, the target gets a permanent > dead spot burned out in his retina. Then the damaged one sues his ass off and > Mr. Laser goes to jail for permanent health damage. Someone should call the > police now because this is endangering the public health even if performed at > home - you can burn out an eye of a by-passer in the street through the window. > It's in the public health interest to have this guy arrested before someone > gets handicapped from this. > > Next time slashdot could feature a mad gunman or a guy throwing grenades in the > street. > > CL< > > >> -C >> > > From colin at ninja.ca Fri Aug 10 10:10:47 2007 From: colin at ninja.ca (Colin Stanners) Date: Fri, 10 Aug 2007 03:10:47 -0600 Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? References: <000b01c70176$f6c087d0$3c0a0a0a@misato2> <20061106131933.GA25208@kestrel.twibright.com> <000501c7da55$8df46d30$3c0a0a0a@misato2> <20070809083431.GA26490@kestrel.barix.local> Message-ID: <002201c7db2e$5b73e910$3c0a0a0a@misato2> Thx for the reply CL. Ignoring (for now) the dangers/foolishness of using 200mw lasers without good knowledge and control, what I meant was using the diodes for 100mbit RONJA, which I understand is mainly limited by available TX hardware right now. 200mw diodes, even run at 20mw, that can be switched at 100/125mhz are not easily available in electronics stores according to previous posts, but many people have access to dead/older DVD-burners. At today's prices, some would even be willing to sacrifice working units. I, like others, would love to see 100mbit RONJA, so I wanted to suggest that you consider taking these available parts along with (I thought) MII chips from old NICs to make a roadmap for this higher-speed equipment. Thanks, -C From kubajz at kbx.cz Fri Aug 10 09:41:07 2007 From: kubajz at kbx.cz (Jakub Sykora) Date: Fri, 10 Aug 2007 10:41:07 +0200 Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? In-Reply-To: <002201c7db2e$5b73e910$3c0a0a0a@misato2> References: <000b01c70176$f6c087d0$3c0a0a0a@misato2> <20061106131933.GA25208@kestrel.twibright.com> <000501c7da55$8df46d30$3c0a0a0a@misato2> <20070809083431.GA26490@kestrel.barix.local> <002201c7db2e$5b73e910$3c0a0a0a@misato2> Message-ID: <46BC24A3.1050806@kbx.cz> As Clock wrote: you must be able to guarantee that in case of failure the beam is safe. If a failure occurs, you simply cannot guarantee the DVD laser will shine at most 20mA or wse. In case of failure it can shine at 200mA and this can be dangerous. Then handling such dangerous part in DIY is pretty dangerous. You should be using anti-laser glasses all time etc. K Colin Stanners wrote: > Thx for the reply CL. > > Ignoring (for now) the dangers/foolishness of using 200mw lasers without good knowledge > and control, what I meant was using the diodes for 100mbit RONJA, which I understand is > mainly limited by available TX hardware right now. 200mw diodes, even run at 20mw, that > can be switched at 100/125mhz are not easily available in electronics stores according to > previous posts, but many people have access to dead/older DVD-burners. At today's > prices, some would even be willing to sacrifice working units. > > I, like others, would love to see 100mbit RONJA, so I wanted to suggest that you consider > taking these available parts along with (I thought) MII chips from old NICs to make a roadmap > for this higher-speed equipment. > > Thanks, > -C > -- Jakub S?kora email: kubajz na kbx.cz <') ICQ: 68976632 ( =- mobil: +420 777 594 201 '' From clock at twibright.com Fri Aug 10 10:32:26 2007 From: clock at twibright.com (Karel Kulhavy) Date: Fri, 10 Aug 2007 11:32:26 +0200 Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? In-Reply-To: <002201c7db2e$5b73e910$3c0a0a0a@misato2> References: <000b01c70176$f6c087d0$3c0a0a0a@misato2> <20061106131933.GA25208@kestrel.twibright.com> <000501c7da55$8df46d30$3c0a0a0a@misato2> <20070809083431.GA26490@kestrel.barix.local> <002201c7db2e$5b73e910$3c0a0a0a@misato2> Message-ID: <20070810093225.GA10674@kestrel.barix.local> On Fri, Aug 10, 2007 at 03:10:47AM -0600, Colin Stanners wrote: > Thx for the reply CL. > > Ignoring (for now) the dangers/foolishness of using 200mw lasers without good > knowledge and control, what I meant was using the diodes for 100mbit RONJA, > which I understand is mainly limited by available TX hardware right now. > 200mw diodes, even run at 20mw, that can be switched at 100/125mhz are not > easily available in electronics stores according to previous posts, but many > people have access to dead/older DVD-burners. At today's prices, some would > even be willing to sacrifice working units. No it's not limited by the available hardware. The available cheap hardware is fine. The speed of development is limited by available time. Now I am doing some fixes on the old mechanics and electronics. CL< > > I, like others, would love to see 100mbit RONJA, so I wanted to suggest that > you consider taking these available parts along with (I thought) MII chips > from old NICs to make a roadmap for this higher-speed equipment. > > Thanks, > -C > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From clock at twibright.com Mon Aug 13 23:16:33 2007 From: clock at twibright.com (Karel Kulhavy) Date: Tue, 14 Aug 2007 00:16:33 +0200 Subject: [Ronja] Changed videos Message-ID: <20070813221633.GA17023@kestrel.barix.local> Someone suggested that the videos from zero angle are not clear to understand so I changed the angle (elevation) to be 15 degrees and recompiled everything. It took about a week to recompile ;-) Now I hope it's better. http://ronja.twibright.com/3d/ CL< From asteri_x at freemail.hu Sun Aug 19 11:09:23 2007 From: asteri_x at freemail.hu (Martin) Date: Sun, 19 Aug 2007 12:09:23 +0200 (CEST) Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? In-Reply-To: <20070809083431.GA26490@kestrel.barix.local> Message-ID: Karel Kulhavy But do you need to buy a DVD burner and smash it with a hammer? Why not just go to an electronic part store and buy just the 200mW diode? Yes, you are right, and you also would know exactly every parameter you need to build the cuircuit. (pinouts, max. currents etc.) But normally you pay 1EUR / mW. Thats a 200EUR for 200 mW!! A DVD burner is around 80 EUR. bye, Martin L?tt?l egy j? vide?t? Vagy Te k?sz?tett?l? Nevezd, hogy d?jazhassuk! www.goldenblokk.hu http://ad.adverticum.net/b/cl,1,6022,192114,246701/click.prm -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20070819/8e247db3/attachment.html From ronja at hansmi.ch Sun Aug 19 11:14:52 2007 From: ronja at hansmi.ch (Michael Hanselmann) Date: Sun, 19 Aug 2007 12:14:52 +0200 Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? In-Reply-To: <20070809083431.GA26490@kestrel.barix.local> References: <000b01c70176$f6c087d0$3c0a0a0a@misato2> <20061106131933.GA25208@kestrel.twibright.com> <000501c7da55$8df46d30$3c0a0a0a@misato2> <20070809083431.GA26490@kestrel.barix.local> Message-ID: <20070819101452.GB16618@hansmi.ch> On Thu, Aug 09, 2007 at 10:34:31AM +0200, Karel Kulhavy wrote: > But do you need to buy a DVD burner and smash it with a hammer? Why not just > go to an electronic part store and buy just the 200mW diode? Unfortunately, buying a DVD burner is much cheaper than the diode alone. At least for some laser types, drive manufactures buy all they can to build into drives. This leads to more expensive diodes for everyone else. It's all about money, not ecology. However, one should already be able to get disposed DVD burners these days. Greets, Michael -- http://hansmi.ch/ -------------- next part -------------- A non-text attachment was scrubbed... Name: not available Type: application/pgp-signature Size: 189 bytes Desc: not available Url : http://pointless.net/pipermail/ronja/attachments/20070819/6897c012/attachment.bin From krepa at seznam.cz Sun Aug 19 23:00:14 2007 From: krepa at seznam.cz (Pavel Krejci) Date: Mon, 20 Aug 2007 00:00:14 +0200 Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? In-Reply-To: <20070819101452.GB16618@hansmi.ch> References: <000b01c70176$f6c087d0$3c0a0a0a@misato2> <20061106131933.GA25208@kestrel.twibright.com> <000501c7da55$8df46d30$3c0a0a0a@misato2> <20070809083431.GA26490@kestrel.barix.local> <20070819101452.GB16618@hansmi.ch> Message-ID: <46C8BD6E.3060209@seznam.cz> How about life of the laser? DVD burner hardly operates 24/7... Does anybody know how long can DVD laser shine continuously (providing proper biasing and cooling) P.K. Michael Hanselmann napsal(a): > On Thu, Aug 09, 2007 at 10:34:31AM +0200, Karel Kulhavy wrote: >> But do you need to buy a DVD burner and smash it with a hammer? Why not just >> go to an electronic part store and buy just the 200mW diode? > > Unfortunately, buying a DVD burner is much cheaper than the diode alone. > At least for some laser types, drive manufactures buy all they can to > build into drives. This leads to more expensive diodes for everyone > else. It's all about money, not ecology. However, one should already be > able to get disposed DVD burners these days. > > Greets, > Michael > > From asteri_x at freemail.hu Mon Aug 20 12:38:21 2007 From: asteri_x at freemail.hu (Martin) Date: Mon, 20 Aug 2007 13:38:21 +0200 (CEST) Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? In-Reply-To: <46C8BD6E.3060209@seznam.cz> Message-ID: They seem to have a half-life of around 1000 hours if used at full power. that only means, after 1000 hours you get half amount of light power with same electrical power input. This is why all the laser circuits have automatic power adjustment. Also this means, after a certain amount of electrical power it will get damaged because of excess heat. Also lasers have the nice attitude of immediate damage, when the _optical_ power ecxeeds the limit. A monitor diode with APC is a _must_. So messing around with the LDs is fun, but also a very expensive hobby if not done carefully. Care must be taken ragarding health of eyes and the LD-s. bye, Martin Pavel Krejci How about life of the laser? DVD burner hardly operates 24/7... Does anybody know how long can DVD laser shine continuously (providing proper biasing and cooling) P.K. L?tt?l egy j? vide?t? Vagy Te k?sz?tett?l? Nevezd, hogy d?jazhassuk! www.goldenblokk.hu http://ad.adverticum.net/b/cl,1,6022,192114,246701/click.prm -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20070820/00de1377/attachment.html From krepa at seznam.cz Mon Aug 20 22:13:51 2007 From: krepa at seznam.cz (Pavel Krejci) Date: Mon, 20 Aug 2007 23:13:51 +0200 Subject: [Ronja] Make Magazine: hacking DVD-burner lasers - works for RONJA? In-Reply-To: References: Message-ID: <46CA040F.4040702@seznam.cz> 1000hrs=41.7 days... this is what I'm talking about... PK Martin napsal(a): > They seem to have a half-life of around 1000 hours if used at full > power. that only means, after 1000 hours you get half amount of light > power with same electrical power input. > This is why all the laser circuits have automatic power adjustment. > Also this means, after a certain amount of electrical power it will get > damaged because of excess heat. > Also lasers have the nice attitude of immediate damage, when the > _optical_ power ecxeeds the limit. > A monitor diode with APC is a _must_. > So messing around with the LDs is fun, but also a very expensive hobby > if not done carefully. > Care must be taken ragarding health of eyes and the LD-s. > > bye, Martin > > Pavel Krejci > > How about life of the laser? > DVD burner hardly operates 24/7... > Does anybody know how long can DVD laser shine continuously (providing > proper biasing and cooling) > > P.K. > > > > __________________________________ > ?j?p?t?s? ingatlan: csal?di h?z vagy lak?park? > > > From yudhi_s at yahoo.com Tue Aug 21 12:32:25 2007 From: yudhi_s at yahoo.com (Yudhi S) Date: Tue, 21 Aug 2007 04:32:25 -0700 (PDT) Subject: [Ronja] Using Media Converter In-Reply-To: Message-ID: <724482.64398.qm@web58706.mail.re1.yahoo.com> Hello Guys, Have any one test or try to modified Long Range Single Mode Ethernet to Fiber Converter Bridge (Media Converter) ? Because this devices is already cheap now. Also available for gigabit version. I'm thinking to change the receiver and transmiter LED for better non fiber(wireless) range, my personal test is only 10cm :p using 10/100 Ethernet to SM upto 40KM version. But confused what kind of receiver I must use as the original have 4/5 pins :p Please, share your opinion. Yudhi ____________________________________________________________________________________ Be a better Heartthrob. Get better relationship answers from someone who knows. Yahoo! Answers - Check it out. http://answers.yahoo.com/dir/?link=list&sid=396545433 From eldis111 at seznam.cz Tue Aug 21 15:36:10 2007 From: eldis111 at seznam.cz (eldis) Date: Tue, 21 Aug 2007 16:36:10 +0200 Subject: [Ronja] Using Media Converter In-Reply-To: <724482.64398.qm@web58706.mail.re1.yahoo.com> References: <724482.64398.qm@web58706.mail.re1.yahoo.com> Message-ID: <46CAF85A.4050309@seznam.cz> Sorry man, it won't be as easy as changing optical parts.. You need to build new laser driver and receiving circuit as well. Air is not fiber eldis > Hello Guys, > > Have any one test or try to modified Long Range Single Mode > Ethernet to Fiber Converter Bridge (Media Converter) ? > Because this devices is already cheap now. > Also available for gigabit version. > > I'm thinking to change the receiver and transmiter LED for > better non fiber(wireless) range, my personal test is only > 10cm :p using 10/100 Ethernet to SM upto 40KM version. > But confused what kind of receiver I must use as the > original have 4/5 pins :p > > Please, share your opinion. > > Yudhi > > > > > ____________________________________________________________________________________ > Be a better Heartthrob. Get better relationship answers from someone who knows. Yahoo! Answers - Check it out. > http://answers.yahoo.com/dir/?link=list&sid=396545433 > > From kubajz at kbx.cz Tue Aug 21 17:55:25 2007 From: kubajz at kbx.cz (Jakub Sykora) Date: Tue, 21 Aug 2007 18:55:25 +0200 Subject: [Ronja] Using Media Converter In-Reply-To: <724482.64398.qm@web58706.mail.re1.yahoo.com> References: <724482.64398.qm@web58706.mail.re1.yahoo.com> Message-ID: <46CB18FD.5020407@kbx.cz> The most difficult part is not making the optics and electronics, as it can be done really fast. The mechanics and optics are the alpha and omega :] K Yudhi S wrote: > Hello Guys, > > Have any one test or try to modified Long Range Single Mode > Ethernet to Fiber Converter Bridge (Media Converter) ? > Because this devices is already cheap now. > Also available for gigabit version. > > I'm thinking to change the receiver and transmiter LED for > better non fiber(wireless) range, my personal test is only > 10cm :p using 10/100 Ethernet to SM upto 40KM version. > But confused what kind of receiver I must use as the > original have 4/5 pins :p > > Please, share your opinion. > > Yudhi > > > > > ____________________________________________________________________________________ > Be a better Heartthrob. Get better relationship answers from someone who knows. Yahoo! Answers - Check it out. > http://answers.yahoo.com/dir/?link=list&sid=396545433 > -- Jakub S?kora email: kubajz na kbx.cz <') ICQ: 68976632 ( =- mobil: +420 777 594 201 '' From clock at twibright.com Sat Aug 25 10:25:43 2007 From: clock at twibright.com (Karel Kulhavy) Date: Sat, 25 Aug 2007 11:25:43 +0200 Subject: [Ronja] Using Media Converter In-Reply-To: References: Message-ID: <20070825092543.GC24893@kestrel.barix.local> On Tue, Aug 21, 2007 at 04:32:25AM -0700, Yudhi S wrote: > Hello Guys, > > Have any one test or try to modified Long Range Single Mode > Ethernet to Fiber Converter Bridge (Media Converter) ? I haven't and don't plan to. The twister2 does the conversion in Ronja. CL< > Because this devices is already cheap now. > Also available for gigabit version. > > I'm thinking to change the receiver and transmiter LED for > better non fiber(wireless) range, my personal test is only > 10cm :p using 10/100 Ethernet to SM upto 40KM version. > But confused what kind of receiver I must use as the > original have 4/5 pins :p > > Please, share your opinion. > > Yudhi From eric.e.carson at gmail.com Sat Aug 25 13:36:02 2007 From: eric.e.carson at gmail.com (Eric Carson) Date: Sat, 25 Aug 2007 08:36:02 -0400 Subject: [Ronja] Using Media Converter (Karel Kulhavy) Message-ID: > > Hello Guys, > > > > Have any one test or try to modified Long Range Single Mode > > Ethernet to Fiber Converter Bridge (Media Converter) ? > > I haven't and don't plan to. The twister2 does the conversion in Ronja. > > CL< > > Because this devices is already cheap now. > > Also available for gigabit version. > > > > I'm thinking to change the receiver and transmiter LED for > > better non fiber(wireless) range, my personal test is only > > 10cm :p using 10/100 Ethernet to SM upto 40KM version. > > But confused what kind of receiver I must use as the > > original have 4/5 pins :p > > > > Please, share your opinion. > > > > Yudhi I do not think it would be the same as just switching out an LED. The drastically increased brightness serves several purposes, range/distance and the ability to "punch" through fog, rain, dust and snow. Along with the increased brightness comes a greater current draw, which I am sure would upset the driving hardware in the media converter, if not damage it permanently. From dpolak at gmx.ch Sat Aug 25 16:00:35 2007 From: dpolak at gmx.ch (Daniel Polak) Date: Sat, 25 Aug 2007 17:00:35 +0200 Subject: [Ronja] Twister 2 PCB L52 and C72 Message-ID: <20070825150035.321820@gmx.net> I wonder if the capacitor at C72 is connected with the coil at L53? They are so close together, almost unpossible to sold them correctly. Specially the capacitor 812217 fron Distrelec is bigger than it should be. Daniel -- Psssst! Schon vom neuen GMX MultiMessenger geh?rt? Der kanns mit allen: http://www.gmx.net/de/go/multimessenger From clock at twibright.com Sun Aug 26 10:15:19 2007 From: clock at twibright.com (Karel Kulhavy) Date: Sun, 26 Aug 2007 11:15:19 +0200 Subject: [Ronja] Twister 2 PCB L52 and C72 In-Reply-To: <20070825150035.321820@gmx.net> References: <20070825150035.321820@gmx.net> Message-ID: <20070826091519.GA11258@kestrel.barix.local> On Sat, Aug 25, 2007 at 05:00:35PM +0200, Daniel Polak wrote: > I wonder if the capacitor at C72 is connected with the coil at L53? They are > so close together, almost unpossible to sold them correctly. Specially the > capacitor 812217 fron Distrelec is bigger than it should be. They are supposed to be connected. Actually in PCB, at certain zoom levels the trace shows as connected, at certain as disconnected. The "highlight trace" function of PCB considers it connected. I've fixed it by placing a rectangle over the critical place and sent a bugreport to the geda-user mailing list that the PCB acts inconsistently. The fix will be uploaded when I manage to recompile Ronja and do a rsync. Recompiling Ronja will take a week. How do you have it on your physical PCB piece? Is the trace in one piece? CL< > > Daniel > -- > Psssst! Schon vom neuen GMX MultiMessenger geh?rt? > Der kanns mit allen: http://www.gmx.net/de/go/multimessenger > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From clock at twibright.com Sun Aug 26 12:13:35 2007 From: clock at twibright.com (Karel Kulhavy) Date: Sun, 26 Aug 2007 13:13:35 +0200 Subject: [Ronja] Getting lenses in London / UK Message-ID: <20070826111335.GA10839@kestrel.barix.local> I have found one can buy 100mm loupe suitable for Ronja in a pound shop: http://images.twibright.com/tns/210e.html http://images.twibright.com/tns/210b.html http://images.twibright.com/tns/210c.html http://images.twibright.com/tns/210d.html I didn't check the price but I assume it won't be more than 1.00 GBP ;-) This one was in London, somewhere around the Brick Lane I guess. CL< From clock at twibright.com Sun Aug 26 12:17:17 2007 From: clock at twibright.com (Karel Kulhavy) Date: Sun, 26 Aug 2007 13:17:17 +0200 Subject: [Ronja] Ronja parts from Science Museum in London Message-ID: <20070826111717.GB10839@kestrel.barix.local> They have a nice huge lens in the Science Museum in London: http://images.twibright.com/tns/20a2.html http://images.twibright.com/tns/20a3.html http://images.twibright.com/tns/20a4.html http://images.twibright.com/tns/20a5.html http://images.twibright.com/tns/20a6.html They also have a nice large high-quality retroreflector there, the one that has been put on the Moon: http://images.twibright.com/tns/20c3.html http://images.twibright.com/tns/20c4.html http://images.twibright.com/tns/20c5.html http://images.twibright.com/tns/20c6.html http://images.twibright.com/tns/20c7.html CL< From kubajz at kbx.cz Sun Aug 26 12:56:03 2007 From: kubajz at kbx.cz (Jakub Sykora) Date: Sun, 26 Aug 2007 13:56:03 +0200 Subject: [Ronja] Ronja parts from Science Museum in London In-Reply-To: <20070826111717.GB10839@kestrel.barix.local> References: <20070826111717.GB10839@kestrel.barix.local> Message-ID: <46D16A53.4090200@kbx.cz> I see the lens could be used as these are fresnel lens, but I don't know how to use the retroreflector as it only transmists signal back to the same direction it received. Maybe for high quality aiming these monsterious lens :] This could be such fun to test. I heard about implementing some easy morse code beacon with ID of the watch-light in mediterinean sea as this light was occupied by a radioamateur. The beacon was readable in distances over 80km. K Karel Kulhavy wrote: > They have a nice huge lens in the Science Museum in London: > > http://images.twibright.com/tns/20a2.html > http://images.twibright.com/tns/20a3.html > http://images.twibright.com/tns/20a4.html > http://images.twibright.com/tns/20a5.html > http://images.twibright.com/tns/20a6.html > > They also have a nice large high-quality retroreflector there, the one that > has been put on the Moon: > > http://images.twibright.com/tns/20c3.html > http://images.twibright.com/tns/20c4.html > http://images.twibright.com/tns/20c5.html > http://images.twibright.com/tns/20c6.html > http://images.twibright.com/tns/20c7.html > > CL< > > -- Jakub S?kora email: kubajz na kbx.cz <') ICQ: 68976632 ( =- mobil: +420 777 594 201 '' From asteri_x at freemail.hu Sun Aug 26 22:08:54 2007 From: asteri_x at freemail.hu (=?UTF-8?B?R3l1cmvDsyBNYXJ0aW4=?=) Date: Sun, 26 Aug 2007 23:08:54 +0200 Subject: [Ronja] Ronja parts from Science Museum in London In-Reply-To: <46D16A53.4090200@kbx.cz> References: <20070826111717.GB10839@kestrel.barix.local> <46D16A53.4090200@kbx.cz> Message-ID: <46D1EBE6.9010703@freemail.hu> You mean that amateur used the Moon-reflector as a satellite-transmitter? Wow! Martin Jakub Sykora ?rta: > I see the lens could be used as these are fresnel lens, but I don't know > how to use the retroreflector as it only transmists signal back to the > same direction it received. Maybe for high quality aiming these > monsterious lens :] > This could be such fun to test. I heard about implementing some easy > morse code beacon with ID of the watch-light in mediterinean sea as this > light was occupied by a radioamateur. The beacon was readable in > distances over 80km. > > K > > Karel Kulhavy wrote: > >> They have a nice huge lens in the Science Museum in London: >> >> http://images.twibright.com/tns/20a2.html >> http://images.twibright.com/tns/20a3.html >> http://images.twibright.com/tns/20a4.html >> http://images.twibright.com/tns/20a5.html >> http://images.twibright.com/tns/20a6.html >> >> They also have a nice large high-quality retroreflector there, the one that >> has been put on the Moon: >> >> http://images.twibright.com/tns/20c3.html >> http://images.twibright.com/tns/20c4.html >> http://images.twibright.com/tns/20c5.html >> http://images.twibright.com/tns/20c6.html >> http://images.twibright.com/tns/20c7.html >> >> CL< >> >> >> > > From kubajz at kbx.cz Mon Aug 27 07:25:08 2007 From: kubajz at kbx.cz (Jakub Sykora) Date: Mon, 27 Aug 2007 08:25:08 +0200 Subject: [Ronja] Ronja parts from Science Museum in London In-Reply-To: <46D1EBE6.9010703@freemail.hu> References: <20070826111717.GB10839@kestrel.barix.local> <46D16A53.4090200@kbx.cz> <46D1EBE6.9010703@freemail.hu> Message-ID: <46D26E44.4000007@kbx.cz> No, You probably misunderstood. He modulated signal on the light-tower that was shining through the huge fresnel lens. This signal (few bits per second) was received 80km far with no problem. K Gyurk? Martin wrote: > You mean that amateur used the Moon-reflector as a satellite-transmitter? > Wow! > > Martin > > Jakub Sykora ?rta: >> I see the lens could be used as these are fresnel lens, but I don't know >> how to use the retroreflector as it only transmists signal back to the >> same direction it received. Maybe for high quality aiming these >> monsterious lens :] >> This could be such fun to test. I heard about implementing some easy >> morse code beacon with ID of the watch-light in mediterinean sea as this >> light was occupied by a radioamateur. The beacon was readable in >> distances over 80km. >> >> K >> >> Karel Kulhavy wrote: >> >>> They have a nice huge lens in the Science Museum in London: >>> >>> http://images.twibright.com/tns/20a2.html >>> http://images.twibright.com/tns/20a3.html >>> http://images.twibright.com/tns/20a4.html >>> http://images.twibright.com/tns/20a5.html >>> http://images.twibright.com/tns/20a6.html >>> >>> They also have a nice large high-quality retroreflector there, the one that >>> has been put on the Moon: >>> >>> http://images.twibright.com/tns/20c3.html >>> http://images.twibright.com/tns/20c4.html >>> http://images.twibright.com/tns/20c5.html >>> http://images.twibright.com/tns/20c6.html >>> http://images.twibright.com/tns/20c7.html >>> >>> CL< >>> >>> >>> >> > -- Jakub S?kora email: kubajz na kbx.cz <') ICQ: 68976632 ( =- mobil: +420 777 594 201 '' From schum at seznam.cz Mon Aug 27 09:01:43 2007 From: schum at seznam.cz (schumann miroslav) Date: Mon, 27 Aug 2007 10:01:43 +0200 Subject: [Ronja] IO pro zdroj v twistru2 Message-ID: <006301c7e880$81e07fa0$2701a8c0@mirek> Ahoj lidi mam navic asi 25ks LM2671M-5.0 , cena 90 K? za kus Mirek ------------- dal?? ??st --------------- HTML p??loha byla odstran?na... URL: http://pointless.net/pipermail/ronja/attachments/20070827/58aad508/attachment.html From dpolak at gmx.ch Mon Aug 27 13:47:27 2007 From: dpolak at gmx.ch (Daniel Polak) Date: Mon, 27 Aug 2007 14:47:27 +0200 Subject: [Ronja] Twister 2 PCB L52 and C72 In-Reply-To: <20070826091519.GA11258@kestrel.barix.local> References: <20070825150035.321820@gmx.net> <20070826091519.GA11258@kestrel.barix.local> Message-ID: <20070827124727.273370@gmx.net> > On Sat, Aug 25, 2007 at 05:00:35PM +0200, Daniel Polak wrote: > > I wonder if the capacitor at C72 is connected with the coil at L53? They > are > > so close together, almost unpossible to sold them correctly. Specially > the > > capacitor 812217 fron Distrelec is bigger than it should be. > > They are supposed to be connected. Actually in PCB, at certain zoom levels > the trace shows as connected, at certain as disconnected. The "highlight > trace" > function of PCB considers it connected. > > I've fixed it by placing a rectangle over the critical place and sent a > bugreport to the geda-user mailing list that the PCB acts inconsistently. > > The fix will be uploaded when I manage to recompile Ronja and do a rsync. > Recompiling Ronja will take a week. > > How do you have it on your physical PCB piece? Is the trace in one piece? > > CL< > > > Yes, if I look on my PCB close enough, I can see that the trace is in one peace. I had to solder the capactior together with the coil anyway, because of the size from the capacitor. Daniel > > Twibright Ronja mailing list http://ronja.twibright.com > > Ronja at lists.pointless.net > > http://pointless.net/mailman/listinfo/ronja > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja -- GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail From dpolak at gmx.ch Mon Aug 27 19:25:57 2007 From: dpolak at gmx.ch (Daniel Polak) Date: Mon, 27 Aug 2007 20:25:57 +0200 Subject: [Ronja] Capacitor C18 100u/10v TX Module Message-ID: <20070827182557.204920@gmx.net> It seems that this capactitor is not easy to get. I found one at Grieder Bauteile, but that one is only axial. Are there any other sources or alternatives? Daniel -- Psssst! Schon vom neuen GMX MultiMessenger geh?rt? Der kanns mit allen: http://www.gmx.net/de/go/multimessenger From clock at twibright.com Tue Aug 28 08:02:42 2007 From: clock at twibright.com (Karel Kulhavy) Date: Tue, 28 Aug 2007 09:02:42 +0200 Subject: [Ronja] Capacitor C18 100u/10v TX Module In-Reply-To: <20070827182557.204920@gmx.net> References: <20070827182557.204920@gmx.net> Message-ID: <20070828070242.GB20885@kestrel.barix.local> On Mon, Aug 27, 2007 at 08:25:57PM +0200, Daniel Polak wrote: > It seems that this capactitor is not easy to get. I found one at Grieder > Bauteile, but that one is only axial. Are there any other sources or > alternatives? You should be able to stuff something bigger there, just let it lie on the board. I hope the holes are not too small for it. Or you could use a higher value like 150uF or 220uF if you can get them in that size. Did you try Distrelec or Pusterla in Zuerich? Should I make the footprint on the PCB bigger? CL< > > Daniel > > -- > Psssst! Schon vom neuen GMX MultiMessenger geh?rt? > Der kanns mit allen: http://www.gmx.net/de/go/multimessenger > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From dpolak at gmx.ch Tue Aug 28 09:05:05 2007 From: dpolak at gmx.ch (Daniel Polak) Date: Tue, 28 Aug 2007 10:05:05 +0200 Subject: [Ronja] Capacitor C18 100u/10v TX Module In-Reply-To: <20070828070242.GB20885@kestrel.barix.local> References: <20070827182557.204920@gmx.net> <20070828070242.GB20885@kestrel.barix.local> Message-ID: <20070828080505.131830@gmx.net> I allready tried distrelec and pusterla but with no luck. I can solder the one from grieder, but that one is axial and the holes are to small. I had the idea to check conrad and I found that one: http://www1.ch2.conrad.com/scripts/wgate/zcop_ch2/~flNlc3Npb249UDkwX0NIMjpDX0FHQVRFMDU6MDAwMC4wMDg3LjQ4NjUyZDM0Jn5odHRwX2NvbnRlbnRfY2hhcnNldD1pc28tODg1OS0xJn5TdGF0ZT0yNjk0NTMzMzQz====?~template=PCAT_AREA_S_BROWSE&mfhelp=&p_selected_area=%24ROOT&p_selected_area_fh=&perform_special_action=&glb_user_js=Y&shop=CH2&vgl_artikel_in_index=&product_show_id=&p_page_to_display=DirektSearch&~cookies=1&zhmmh_lfo=&zhmmh_area_kz=&s_haupt_kategorie=&p_searchstring=446113&p_searchstring_artnr=446113&p_search_category=alle&r3_matn=&insert_kz=&area_s_url=&brand=&amount=&new_item_quantity=&area_url=&direkt_aufriss_area=&p_countdown=&p_80=&p_80_category=&p_80_article=&p_next_template_after_login=&mindestbestellwert=&login=&password=&bpemail=&bpid=&url=&show_wk=&use_search=3&p_back_template=&template=&kat_save=&updatestr=&vgl_artikel_in_vgl=&titel=&darsteller=®isseur=&anbieter=&genre=&fsk=&jahr=&jahr2=&dvd_error=X&dvd_empty_error=X&dvd_year_error=&call_dvd=&kna_news=&p_status_scenario=&documentselector=&aktiv=&p_load_area=$ROOT&p_artikelbilder_mode=&p_sortopt=&page=&p_catalog_max_results=20 I also checked other parts from conrad and many are there available for the ronja project. As soon I have time, I can make a new partlist with conrad parts? Daniel -------- Original-Nachricht -------- > Datum: Tue, 28 Aug 2007 09:02:42 +0200 > Von: Karel Kulhavy > An: Twibright Ronja > Betreff: Re: [Ronja] Capacitor C18 100u/10v TX Module > On Mon, Aug 27, 2007 at 08:25:57PM +0200, Daniel Polak wrote: > > It seems that this capactitor is not easy to get. I found one at Grieder > > Bauteile, but that one is only axial. Are there any other sources or > > alternatives? > > You should be able to stuff something bigger there, just let it lie on the > board. I hope the holes are not too small for it. > > Or you could use a higher value like 150uF or 220uF if you can get them in > that size. > > Did you try Distrelec or Pusterla in Zuerich? > > Should I make the footprint on the PCB bigger? > > CL< > > > > Daniel > > > > -- > > Psssst! Schon vom neuen GMX MultiMessenger geh?rt? > > Der kanns mit allen: http://www.gmx.net/de/go/multimessenger > > > > -- > > Twibright Ronja mailing list http://ronja.twibright.com > > Ronja at lists.pointless.net > > http://pointless.net/mailman/listinfo/ronja > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja -- GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail From clock at twibright.com Tue Aug 28 13:04:57 2007 From: clock at twibright.com (Karel Kulhavy) Date: Tue, 28 Aug 2007 14:04:57 +0200 Subject: [Ronja] Capacitor C18 100u/10v TX Module In-Reply-To: <20070828080505.131830@gmx.net> References: <20070827182557.204920@gmx.net> <20070828070242.GB20885@kestrel.barix.local> <20070828080505.131830@gmx.net> Message-ID: <20070828120457.GA24219@kestrel.barix.local> On Tue, Aug 28, 2007 at 10:05:05AM +0200, Daniel Polak wrote: Were you able to get that capacitor in a larger size or weren't you able to get it at all? > I allready tried distrelec and pusterla but with no luck. I can solder the > one from grieder, but that one is axial and the holes are to small. Then put thin wires through the holes and solder the capacitor pins to that wires. I'll enlarge the holes in the board in the meantime. CL< > I had the idea to check conrad and I found that one: > http://www1.ch2.conrad.com/scripts/wgate/zcop_ch2/~flNlc3Npb249UDkwX0NIMjpDX0FHQVRFMDU6MDAwMC4wMDg3LjQ4NjUyZDM0Jn5odHRwX2NvbnRlbnRfY2hhcnNldD1pc28tODg1OS0xJn5TdGF0ZT0yNjk0NTMzMzQz====?~template=PCAT_AREA_S_BROWSE&mfhelp=&p_selected_area=%24ROOT&p_selected_area_fh=&perform_special_action=&glb_user_js=Y&shop=CH2&vgl_artikel_in_index=&product_show_id=&p_page_to_display=DirektSearch&~cookies=1&zhmmh_lfo=&zhmmh_area_kz=&s_haupt_kategorie=&p_searchstring=446113&p_searchstring_artnr=446113&p_search_category=alle&r3_matn=&insert_kz=&area_s_url=&brand=&amount=&new_item_quantity=&area_url=&direkt_aufriss_area=&p_countdown=&p_80=&p_80_category=&p_80_article=&p_next_template_after_login=&mindestbestellwert=&login=&password=&bpemail=&bpid=&url=&show_wk=&use_search=3&p_back_template=&template=&kat_save=&updatestr=&vgl_artikel_in_vgl=&titel=&darsteller=®isseur=&anbieter=&genre=&fsk=&jahr=&jahr2=&dvd_error=X&dvd_empty_error=X&dvd_year_error=&call_dvd=&kna_news=&p_status_scenario=&documentselector=&aktiv=&p_load_area=$ROOT&p_artikelbilder_mode=&p_sortopt=&page=&p_catalog_max_results=20 > > I also checked other parts from conrad and many are there available for the ronja project. As soon I have time, I can make a new partlist with conrad parts? > > Daniel > > > -------- Original-Nachricht -------- > > Datum: Tue, 28 Aug 2007 09:02:42 +0200 > > Von: Karel Kulhavy > > An: Twibright Ronja > > Betreff: Re: [Ronja] Capacitor C18 100u/10v TX Module > > > On Mon, Aug 27, 2007 at 08:25:57PM +0200, Daniel Polak wrote: > > > It seems that this capactitor is not easy to get. I found one at Grieder > > > Bauteile, but that one is only axial. Are there any other sources or > > > alternatives? > > > > You should be able to stuff something bigger there, just let it lie on the > > board. I hope the holes are not too small for it. > > > > Or you could use a higher value like 150uF or 220uF if you can get them in > > that size. > > > > Did you try Distrelec or Pusterla in Zuerich? > > > > Should I make the footprint on the PCB bigger? > > > > CL< > > > > > > Daniel > > > > > > -- > > > Psssst! Schon vom neuen GMX MultiMessenger geh?rt? > > > Der kanns mit allen: http://www.gmx.net/de/go/multimessenger > > > > > > -- > > > Twibright Ronja mailing list http://ronja.twibright.com > > > Ronja at lists.pointless.net > > > http://pointless.net/mailman/listinfo/ronja > > > > -- > > Twibright Ronja mailing list http://ronja.twibright.com > > Ronja at lists.pointless.net > > http://pointless.net/mailman/listinfo/ronja > > -- > GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. > Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From dpolak at gmx.ch Thu Aug 30 08:51:41 2007 From: dpolak at gmx.ch (Daniel Polak) Date: Thu, 30 Aug 2007 09:51:41 +0200 Subject: [Ronja] Capacitor C18 100u/10v TX Module In-Reply-To: <20070828120457.GA24219@kestrel.barix.local> References: <20070827182557.204920@gmx.net> <20070828070242.GB20885@kestrel.barix.local> <20070828080505.131830@gmx.net> <20070828120457.GA24219@kestrel.barix.local> Message-ID: <20070830075141.123650@gmx.net> I got the capacitor in a bigger size from from Grieder, but the holes are to small. Sure, I can so solder it with wires, but I found another capacitor at conrad with partnumber 446113-13. Which fits perfect. > > Were you able to get that capacitor in a larger size or weren't you able > to > get it at all? > > > I allready tried distrelec and pusterla but with no luck. I can solder > the > > one from grieder, but that one is axial and the holes are to small. > > Then put thin wires through the holes and solder the capacitor pins to > that > wires. I'll enlarge the holes in the board in the meantime. > > CL< > > > I had the idea to check conrad and I found that one: > > > http://www1.ch2.conrad.com/scripts/wgate/zcop_ch2/~flNlc3Npb249UDkwX0NIMjpDX0FHQVRFMDU6MDAwMC4wMDg3LjQ4NjUyZDM0Jn5odHRwX2NvbnRlbnRfY2hhcnNldD1pc28tODg1OS0xJn5TdGF0ZT0yNjk0NTMzMzQz====?~template=PCAT_AREA_S_BROWSE&mfhelp=&p_selected_area=%24ROOT&p_selected_area_fh=&perform_special_action=&glb_user_js=Y&shop=CH2&vgl_artikel_in_index=&product_show_id=&p_page_to_display=DirektSearch&~cookies=1&zhmmh_lfo=&zhmmh_area_kz=&s_haupt_kategorie=&p_searchstring=446113&p_searchstring_artnr=446113&p_search_category=alle&r3_matn=&insert_kz=&area_s_url=&brand=&amount=&new_item_quantity=&area_url=&direkt_aufriss_area=&p_countdown=&p_80=&p_80_category=&p_80_article=&p_next_template_after_login=&mindestbestellwert=&login=&password=&bpemail=&bpid=&url=&show_wk=&use_search=3&p_back_template=&template=&kat_save=&updatestr=&vgl_artikel_in_vgl=&titel=&darsteller=®isseur=&anbieter=&genre=&fsk=&jahr=&jahr2=&dvd_error=X&dvd_empty_error=X&dvd_year_error=&call_dvd=&kna_news=&p_status_scenario=&documentselector=&aktiv=&p_load_area=$ROOT&p_artikelbilder_mode=&p_sortopt=&page=&p_catalog_max_results=20 > > > > I also checked other parts from conrad and many are there available for > the ronja project. As soon I have time, I can make a new partlist with > conrad parts? > > > > Daniel > > > > > > -------- Original-Nachricht -------- > > > Datum: Tue, 28 Aug 2007 09:02:42 +0200 > > > Von: Karel Kulhavy > > > An: Twibright Ronja > > > Betreff: Re: [Ronja] Capacitor C18 100u/10v TX Module > > > > > On Mon, Aug 27, 2007 at 08:25:57PM +0200, Daniel Polak wrote: > > > > It seems that this capactitor is not easy to get. I found one at > Grieder > > > > Bauteile, but that one is only axial. Are there any other sources or > > > > alternatives? > > > > > > You should be able to stuff something bigger there, just let it lie on > the > > > board. I hope the holes are not too small for it. > > > > > > Or you could use a higher value like 150uF or 220uF if you can get > them in > > > that size. > > > > > > Did you try Distrelec or Pusterla in Zuerich? > > > > > > Should I make the footprint on the PCB bigger? > > > > > > CL< > > > > > > > > Daniel > > > > > > > > -- > > > > Psssst! Schon vom neuen GMX MultiMessenger geh?rt? > > > > Der kanns mit allen: http://www.gmx.net/de/go/multimessenger > > > > > > > > -- > > > > Twibright Ronja mailing list http://ronja.twibright.com > > > > Ronja at lists.pointless.net > > > > http://pointless.net/mailman/listinfo/ronja > > > > > > -- > > > Twibright Ronja mailing list http://ronja.twibright.com > > > Ronja at lists.pointless.net > > > http://pointless.net/mailman/listinfo/ronja > > > > -- > > GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. > > Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail > > > > -- > > Twibright Ronja mailing list http://ronja.twibright.com > > Ronja at lists.pointless.net > > http://pointless.net/mailman/listinfo/ronja > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja -- GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail From dpolak at gmx.ch Thu Aug 30 08:58:53 2007 From: dpolak at gmx.ch (Daniel Polak) Date: Thu, 30 Aug 2007 09:58:53 +0200 Subject: [Ronja] Ethernet distance question Message-ID: <20070830075853.123650@gmx.net> Is there a technical reason, that the distance for the ethernet connection between the twister 2 and the pc is limited to 1m? Isn't the ethernet connection more robust than the signal line between the twister 2 and the optical heads? -- GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail From kubajz at kbx.cz Thu Aug 30 09:19:52 2007 From: kubajz at kbx.cz (Jakub Sykora) Date: Thu, 30 Aug 2007 10:19:52 +0200 Subject: [Ronja] Ethernet distance question In-Reply-To: <20070830075853.123650@gmx.net> References: <20070830075853.123650@gmx.net> Message-ID: <46D67DA8.1010701@kbx.cz> The coax signal is very durable. The reason of ethernet cable too short is some issue with missing ethernet trafo or something like this. If you add this trafo from old NIC, you should get standard 100m. JS Daniel Polak napsal(a): > Is there a technical reason, that the distance for the ethernet connection between the twister 2 and the pc is limited to 1m? Isn't the ethernet connection more robust than the signal line between the twister 2 and the optical heads? > From clock at twibright.com Thu Aug 30 09:39:05 2007 From: clock at twibright.com (Karel Kulhavy) Date: Thu, 30 Aug 2007 10:39:05 +0200 Subject: [Ronja] Capacitor C18 100u/10v TX Module In-Reply-To: <20070830075141.123650@gmx.net> References: <20070827182557.204920@gmx.net> <20070828070242.GB20885@kestrel.barix.local> <20070828080505.131830@gmx.net> <20070828120457.GA24219@kestrel.barix.local> <20070830075141.123650@gmx.net> Message-ID: <20070830083905.GA13901@kestrel.barix.local> On Thu, Aug 30, 2007 at 09:51:41AM +0200, Daniel Polak wrote: > I got the capacitor in a bigger size from from Grieder, but the holes are to > small. Sure, I can so solder it with wires, but I found another capacitor at > conrad with partnumber 446113-13. Which fits perfect. OK I put enlarging the holes into my TODO list. Doesn't make sense that people would need to search for components in different providers when the holes can be easily enlarged in the design. Is the bigger size capacitor higher than 15mm so it wouldn't fit into the box? http://kestrel.barix.local/drawings/tx_board.png CL< > > > > > > Were you able to get that capacitor in a larger size or weren't you able > > to > > get it at all? > > > > > I allready tried distrelec and pusterla but with no luck. I can solder > > the > > > one from grieder, but that one is axial and the holes are to small. > > > > Then put thin wires through the holes and solder the capacitor pins to > > that > > wires. I'll enlarge the holes in the board in the meantime. > > > > CL< > > > > > I had the idea to check conrad and I found that one: > > > > > http://www1.ch2.conrad.com/scripts/wgate/zcop_ch2/~flNlc3Npb249UDkwX0NIMjpDX0FHQVRFMDU6MDAwMC4wMDg3LjQ4NjUyZDM0Jn5odHRwX2NvbnRlbnRfY2hhcnNldD1pc28tODg1OS0xJn5TdGF0ZT0yNjk0NTMzMzQz====?~template=PCAT_AREA_S_BROWSE&mfhelp=&p_selected_area=%24ROOT&p_selected_area_fh=&perform_special_action=&glb_user_js=Y&shop=CH2&vgl_artikel_in_index=&product_show_id=&p_page_to_display=DirektSearch&~cookies=1&zhmmh_lfo=&zhmmh_area_kz=&s_haupt_kategorie=&p_searchstring=446113&p_searchstring_artnr=446113&p_search_category=alle&r3_matn=&insert_kz=&area_s_url=&brand=&amount=&new_item_quantity=&area_url=&direkt_aufriss_area=&p_countdown=&p_80=&p_80_category=&p_80_article=&p_next_template_after_login=&mindestbestellwert=&login=&password=&bpemail=&bpid=&url=&show_wk=&use_search=3&p_back_template=&template=&kat_save=&updatestr=&vgl_artikel_in_vgl=&titel=&darsteller=®isseur=&anbieter=&genre=&fsk=&jahr=&jahr2=&dvd_error=X&dvd_empty_error=X&dvd_year_error=&call_dvd=&kna_news=&p_status_scenario=&documentselector=&aktiv=&p_load_area=$ROOT&p_artikelbilder_mode=&p_sortopt=&page=&p_catalog_max_results=20 > > > > > > I also checked other parts from conrad and many are there available for > > the ronja project. As soon I have time, I can make a new partlist with > > conrad parts? > > > > > > Daniel > > > > > > > > > -------- Original-Nachricht -------- > > > > Datum: Tue, 28 Aug 2007 09:02:42 +0200 > > > > Von: Karel Kulhavy > > > > An: Twibright Ronja > > > > Betreff: Re: [Ronja] Capacitor C18 100u/10v TX Module > > > > > > > On Mon, Aug 27, 2007 at 08:25:57PM +0200, Daniel Polak wrote: > > > > > It seems that this capactitor is not easy to get. I found one at > > Grieder > > > > > Bauteile, but that one is only axial. Are there any other sources or > > > > > alternatives? > > > > > > > > You should be able to stuff something bigger there, just let it lie on > > the > > > > board. I hope the holes are not too small for it. > > > > > > > > Or you could use a higher value like 150uF or 220uF if you can get > > them in > > > > that size. > > > > > > > > Did you try Distrelec or Pusterla in Zuerich? > > > > > > > > Should I make the footprint on the PCB bigger? > > > > > > > > CL< > > > > > > > > > > Daniel > > > > > > > > > > -- > > > > > Psssst! Schon vom neuen GMX MultiMessenger geh?rt? > > > > > Der kanns mit allen: http://www.gmx.net/de/go/multimessenger > > > > > > > > > > -- > > > > > Twibright Ronja mailing list http://ronja.twibright.com > > > > > Ronja at lists.pointless.net > > > > > http://pointless.net/mailman/listinfo/ronja > > > > > > > > -- > > > > Twibright Ronja mailing list http://ronja.twibright.com > > > > Ronja at lists.pointless.net > > > > http://pointless.net/mailman/listinfo/ronja > > > > > > -- > > > GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. > > > Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail > > > > > > -- > > > Twibright Ronja mailing list http://ronja.twibright.com > > > Ronja at lists.pointless.net > > > http://pointless.net/mailman/listinfo/ronja > > > > -- > > Twibright Ronja mailing list http://ronja.twibright.com > > Ronja at lists.pointless.net > > http://pointless.net/mailman/listinfo/ronja > > -- > GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. > Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From clock at twibright.com Thu Aug 30 09:42:12 2007 From: clock at twibright.com (Karel Kulhavy) Date: Thu, 30 Aug 2007 10:42:12 +0200 Subject: [Ronja] Ethernet distance question In-Reply-To: <20070830075853.123650@gmx.net> References: <20070830075853.123650@gmx.net> Message-ID: <20070830084212.GB13901@kestrel.barix.local> On Thu, Aug 30, 2007 at 09:58:53AM +0200, Daniel Polak wrote: > Is there a technical reason, that the distance for the ethernet connection > between the twister 2 and the pc is limited to 1m? Isn't the ethernet > connection more robust than the signal line between the twister 2 and the > optical heads? Yes because the Ethernet interface is simplified to save transformer and wave shaping. Therefore it's prone to crosstalks. Also radiation in case of unshielded cables. Another reason is that Ethernet cable is unsuitable for outdoor unless a special outdoor shielded cable is used. The thin plastic easily corrodes through weather. Also putting unshielded cable in pooling water causes losing high frequency signal. People would tend putting this cable on the roof then. Twister also doesn't have temperature range suitable for putting on the roof. CL< From clock at twibright.com Thu Aug 30 10:28:29 2007 From: clock at twibright.com (Karel Kulhavy) Date: Thu, 30 Aug 2007 11:28:29 +0200 Subject: [Ronja] Ethernet distance question In-Reply-To: <46D67DA8.1010701@kbx.cz> References: <20070830075853.123650@gmx.net> <46D67DA8.1010701@kbx.cz> Message-ID: <20070830092829.GA23960@kestrel.barix.local> On Thu, Aug 30, 2007 at 10:19:52AM +0200, Jakub Sykora wrote: > The coax signal is very durable. The reason of ethernet cable too short Coax is being used for outdoor television antenna installations for a long time without problems. The television frequency is up to 800MHz or so. CL< From dpolak at gmx.ch Thu Aug 30 14:25:57 2007 From: dpolak at gmx.ch (Daniel Polak) Date: Thu, 30 Aug 2007 15:25:57 +0200 Subject: [Ronja] Capacitor C18 100u/10v TX Module In-Reply-To: <20070830083905.GA13901@kestrel.barix.local> References: <20070827182557.204920@gmx.net> <20070828070242.GB20885@kestrel.barix.local> <20070828080505.131830@gmx.net> <20070828120457.GA24219@kestrel.barix.local> <20070830075141.123650@gmx.net> <20070830083905.GA13901@kestrel.barix.local> Message-ID: <20070830132557.142870@gmx.net> The bigger size capacitor is axial, so fitting is anyway different. The hight shouldn't be a problem. > On Thu, Aug 30, 2007 at 09:51:41AM +0200, Daniel Polak wrote: > > I got the capacitor in a bigger size from from Grieder, but the holes > are to > > small. Sure, I can so solder it with wires, but I found another > capacitor at > > conrad with partnumber 446113-13. Which fits perfect. > > OK I put enlarging the holes into my TODO list. Doesn't make sense that > people > would need to search for components in different providers when the holes > can > be easily enlarged in the design. > > Is the bigger size capacitor higher than 15mm so it wouldn't fit into the > box? http://kestrel.barix.local/drawings/tx_board.png > > CL< > > > > > > > > > > Were you able to get that capacitor in a larger size or weren't you > able > > > to > > > get it at all? > > > > > > > I allready tried distrelec and pusterla but with no luck. I can > solder > > > the > > > > one from grieder, but that one is axial and the holes are to small. > > > > > > Then put thin wires through the holes and solder the capacitor pins to > > > that > > > wires. I'll enlarge the holes in the board in the meantime. > > > > > > CL< > > > > > > > I had the idea to check conrad and I found that one: > > > > > > > > http://www1.ch2.conrad.com/scripts/wgate/zcop_ch2/~flNlc3Npb249UDkwX0NIMjpDX0FHQVRFMDU6MDAwMC4wMDg3LjQ4NjUyZDM0Jn5odHRwX2NvbnRlbnRfY2hhcnNldD1pc28tODg1OS0xJn5TdGF0ZT0yNjk0NTMzMzQz====?~template=PCAT_AREA_S_BROWSE&mfhelp=&p_selected_area=%24ROOT&p_selected_area_fh=&perform_special_action=&glb_user_js=Y&shop=CH2&vgl_artikel_in_index=&product_show_id=&p_page_to_display=DirektSearch&~cookies=1&zhmmh_lfo=&zhmmh_area_kz=&s_haupt_kategorie=&p_searchstring=446113&p_searchstring_artnr=446113&p_search_category=alle&r3_matn=&insert_kz=&area_s_url=&brand=&amount=&new_item_quantity=&area_url=&direkt_aufriss_area=&p_countdown=&p_80=&p_80_category=&p_80_article=&p_next_template_after_login=&mindestbestellwert=&login=&password=&bpemail=&bpid=&url=&show_wk=&use_search=3&p_back_template=&template=&kat_save=&updatestr=&vgl_artikel_in_vgl=&titel=&darsteller=®isseur=&anbieter=&genre=&fsk=&jahr=&jahr2=&dvd_error=X&dvd_empty_error=X&dvd_year_error=&call_dvd=&kna_news=&p_status_scenario=&documentselector=&aktiv=&p_load_area=$ROOT&p_artikelbilder_mode=&p_sortopt=&page=&p_catalog_max_results=20 > > > > > > > > I also checked other parts from conrad and many are there available > for > > > the ronja project. As soon I have time, I can make a new partlist with > > > conrad parts? > > > > > > > > Daniel > > > > > > > > > > > > -------- Original-Nachricht -------- > > > > > Datum: Tue, 28 Aug 2007 09:02:42 +0200 > > > > > Von: Karel Kulhavy > > > > > An: Twibright Ronja > > > > > Betreff: Re: [Ronja] Capacitor C18 100u/10v TX Module > > > > > > > > > On Mon, Aug 27, 2007 at 08:25:57PM +0200, Daniel Polak wrote: > > > > > > It seems that this capactitor is not easy to get. I found one at > > > Grieder > > > > > > Bauteile, but that one is only axial. Are there any other > sources or > > > > > > alternatives? > > > > > > > > > > You should be able to stuff something bigger there, just let it > lie on > > > the > > > > > board. I hope the holes are not too small for it. > > > > > > > > > > Or you could use a higher value like 150uF or 220uF if you can get > > > them in > > > > > that size. > > > > > > > > > > Did you try Distrelec or Pusterla in Zuerich? > > > > > > > > > > Should I make the footprint on the PCB bigger? > > > > > > > > > > CL< > > > > > > > > > > > > Daniel > > > > > > > > > > > > -- > > > > > > Psssst! Schon vom neuen GMX MultiMessenger geh?rt? > > > > > > Der kanns mit allen: http://www.gmx.net/de/go/multimessenger > > > > > > > > > > > > -- > > > > > > Twibright Ronja mailing list http://ronja.twibright.com > > > > > > Ronja at lists.pointless.net > > > > > > http://pointless.net/mailman/listinfo/ronja > > > > > > > > > > -- > > > > > Twibright Ronja mailing list http://ronja.twibright.com > > > > > Ronja at lists.pointless.net > > > > > http://pointless.net/mailman/listinfo/ronja > > > > > > > > -- > > > > GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. > > > > Alle Infos und kostenlose Anmeldung: > http://www.gmx.net/de/go/freemail > > > > > > > > -- > > > > Twibright Ronja mailing list http://ronja.twibright.com > > > > Ronja at lists.pointless.net > > > > http://pointless.net/mailman/listinfo/ronja > > > > > > -- > > > Twibright Ronja mailing list http://ronja.twibright.com > > > Ronja at lists.pointless.net > > > http://pointless.net/mailman/listinfo/ronja > > > > -- > > GMX FreeMail: 1 GB Postfach, 5 E-Mail-Adressen, 10 Free SMS. > > Alle Infos und kostenlose Anmeldung: http://www.gmx.net/de/go/freemail > > > > -- > > Twibright Ronja mailing list http://ronja.twibright.com > > Ronja at lists.pointless.net > > http://pointless.net/mailman/listinfo/ronja > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja -- Psssst! Schon vom neuen GMX MultiMessenger geh?rt? Der kanns mit allen: http://www.gmx.net/de/go/multimessenger From pkyaduvanshi at gmail.com Thu Aug 30 16:45:16 2007 From: pkyaduvanshi at gmail.com (Pramod yaduvanshi) Date: Thu, 30 Aug 2007 21:15:16 +0530 Subject: [Ronja] Dual channel MOSFET Message-ID: <50d3ad760708300845x479c9f00i4ad5b28c557944a2@mail.gmail.com> I have gone through the specs of BF961 and BF908 and found following discrepancies:- Drain Source Voltage rating BF961 : 20 V BF908 : 10 V So to ensure that G1 input capacitance is low I feel P104 voltage should be atleast 12 Volts if you are using BF961 as compared to 6V for BF908 . So the R106 for tuning in case of BF961 will also be much lower compared to BF908 From clock at twibright.com Fri Aug 31 08:03:29 2007 From: clock at twibright.com (Karel Kulhavy) Date: Fri, 31 Aug 2007 09:03:29 +0200 Subject: [Ronja] Dual channel MOSFET In-Reply-To: <50d3ad760708300845x479c9f00i4ad5b28c557944a2@mail.gmail.com> References: <50d3ad760708300845x479c9f00i4ad5b28c557944a2@mail.gmail.com> Message-ID: <20070831070329.GA812@kestrel.barix.local> On Thu, Aug 30, 2007 at 09:15:16PM +0530, Pramod yaduvanshi wrote: > I have gone through the specs of BF961 and BF908 and found following > discrepancies:- > > Drain Source Voltage rating > BF961 : 20 V > BF908 : 10 V My BF908 datasheet (Philips) says 12V. > So to ensure that G1 input capacitance is low I feel P104 voltage should > be atleast 12 Volts if you are using BF961 as compared to 6V for BF908 . Are you implying that G1 input capacitance decreases with P104 voltage? If yes, where do you have this from? I didn't find any graph in the datasheets that would show this. CL< > > So the R106 for tuning in case of BF961 will also be much lower compared > to BF908 > > -- > Twibright Ronja mailing list http://ronja.twibright.com > Ronja at lists.pointless.net > http://pointless.net/mailman/listinfo/ronja From pkyaduvanshi at gmail.com Fri Aug 31 14:17:03 2007 From: pkyaduvanshi at gmail.com (Pramod yaduvanshi) Date: Fri, 31 Aug 2007 18:47:03 +0530 Subject: [Ronja] Dual Channel MOSFET Message-ID: <50d3ad760708310617m705ab5fen1b0f0c5a20221c8c@mail.gmail.com> I dint say for 908 , I wanted to tell those who want to use BF961 instead of BF908. For BF908 its 12 V but for BF961 its 20 Volts So the P104 voltage should be more almost double in case you use BF961 in your circuit. From anmic at fmg.sk Thu Aug 30 09:39:56 2007 From: anmic at fmg.sk (Jan Matyas) Date: Thu, 30 Aug 2007 10:39:56 +0200 Subject: [Ronja] Ethernet distance question In-Reply-To: <20070830075853.123650@gmx.net> References: <20070830075853.123650@gmx.net> Message-ID: <46D6825C.9080105@fmg.sk> Daniel Polak napsal(a): > Is there a technical reason, that the distance for the ethernet connection between the twister 2 and the pc is limited to 1m? Isn't the ethernet connection more robust than the signal line between the twister 2 and the optical heads? In my installation, I use 20m UTP cable between a switch and a Twister ("Twister1"). Moreover, the two spare pairs in UTP are used to deliver power voltage to the twister and rx+tx. It has been working for two years without any problems. JM