From chetancuddalore at gmail.com Wed Oct 6 23:03:38 2010 From: chetancuddalore at gmail.com (chetan cuddalore) Date: Wed, 6 Oct 2010 17:03:38 -0500 Subject: [Ronja] query Message-ID: hi, my name is chetan, doing my MS in Electrical Engineering.I was wondering if the information is sent through ronja optical transmitter on one end,is it possible to receive it on a microcontroller based digital display device.I am working on a research project involving optical communication to convey information such as texts and images.Could you advise me if ronja metropolis is any better than the tetrapolis or the inferno?Also,is it possible to decrease the diameter of the lenses to decrease the operating distance to about 15 meters. I am sure about using ronja as the transmitting and receiving equipment at one end and i am very sure i need a mobile device at the other end to receive and transmit the information.Do you think it is possible??and if yes what kind of equipment? Thanks -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101006/b43c6baa/attachment.html From karthikcena00 at gmail.com Fri Oct 8 12:18:59 2010 From: karthikcena00 at gmail.com (karthik kar) Date: Fri, 8 Oct 2010 16:48:59 +0530 Subject: [Ronja] Ronja Digest, Vol 21, Issue 1 In-Reply-To: References: Message-ID: hi chetan.....its karthik....u can use metrapolis ....we done our project based on ronja we transmitted upto 12 meters.... -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101008/a30350f0/attachment.html From tsuport at bol.com.br Sun Oct 10 01:56:44 2010 From: tsuport at bol.com.br (tsuport) Date: Sat, 9 Oct 2010 21:56:44 -0300 Subject: [Ronja] Contact In-Reply-To: <4cb10c23a11b2_19c5aa07e7c26a@winter21.tmail> References: <4cb10c23a11b2_19c5aa07e7c26a@winter21.tmail> Message-ID: <4cb10f4cc568a_2defaa07e7c1e9@winter21.tmail> An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101009/3eb8c173/attachment.html From parag.balbudhe at gmail.com Sun Oct 10 04:57:55 2010 From: parag.balbudhe at gmail.com (parag balbudhe) Date: Sat, 9 Oct 2010 22:57:55 -0500 Subject: [Ronja] How to buy RONJA device Message-ID: Hello, I want to buy pair of RONJA tetrapolis, I would like to know how can i buy it? How much is the price and with whom I have to contact? Device should transmit up-to 50 meters? Waiting for reply... Thanks -- Thanks & Regards Parag Balbudhe -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101009/0588ef2f/attachment.html From tsuport at bol.com.br Wed Oct 13 22:43:31 2010 From: tsuport at bol.com.br (tsuport) Date: Wed, 13 Oct 2010 18:43:31 -0300 Subject: [Ronja] Hello In-Reply-To: References: Message-ID: <4cb628039e658_2c2cd95466c11@winter23.tmail> An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101013/e3f1095c/attachment.html From chetancuddalore at gmail.com Wed Oct 13 23:57:17 2010 From: chetancuddalore at gmail.com (chetan cuddalore) Date: Wed, 13 Oct 2010 17:57:17 -0500 Subject: [Ronja] need help with range and distance calculation Message-ID: hi i need ronja to transmit upto 10m or a maximum of 50m.Now i did look at the link in the ronja website for calculation of range ( http://ronja.twibright.com/metropolis/dist.php) and i understand the best lens and diode combination from the graphs would be HSDL 4220 along with 60 mm lenses for single transmitter which yields a launch intensity of 8.43 but is there any chance of decreasing the diameter of the lenses further below 60mm (as the above combination would still transmit from 50m to 0.425 km) and what exactly is "Required LED flux vs. distance (2km visibility = 8.5 dB/km)" in the distance graph in PDF format mean.?PLease help. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101013/89a58a5c/attachment.html From twibright at hispeed.ch Thu Oct 14 10:40:31 2010 From: twibright at hispeed.ch (Karel Kulhavy) Date: Thu, 14 Oct 2010 11:40:31 +0200 Subject: [Ronja] need help with range and distance calculation Message-ID: <23426814.1287049231629.JavaMail.root@viefep15> ---- chetan cuddalore schrieb: > hi i need ronja to transmit upto 10m or a maximum of 50m.Now i did look at > the link in the ronja website for calculation of range ( > http://ronja.twibright.com/metropolis/dist.php) and i understand the best > lens and diode combination from the graphs would be HSDL 4220 along with 60 > mm lenses for single transmitter which yields a launch intensity of 8.43 > but is there any chance of decreasing the diameter of the lenses further > below 60mm (as the above combination would still transmit from 50m to 0.425 > km) Yes smaller lens. making both lenses 20mm instead of 60mm reduces the distance approximately 9 times or 5.5m to 47m. and what exactly is "Required LED flux vs. distance (2km visibility = > 8.5 dB/km)" in the distance graph in PDF format mean.?PLease help. You want some distance and know you want your link to work in haze with 2km visibility. The graph tells you what is the required minimum flux of the LED. From chetancuddalore at gmail.com Wed Oct 20 07:20:19 2010 From: chetancuddalore at gmail.com (chetan cuddalore) Date: Wed, 20 Oct 2010 01:20:19 -0500 Subject: [Ronja] modulation for tetrapolis Message-ID: hi could anyone tell me about the modulation technique and the data (packet) transmission technique used in ronja in detail.I know its BPSK using Manchester coding but what would be the ideal ip to test the working and the transmission of packets.I stumbled upon the diagram for the twister circuit( http://ronja.twibright.com/twister2/testing.php) and i'm a bit confused over the ip used. -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101020/bbf11f2c/attachment.html From russ at coldstonelabs.org Wed Oct 20 09:42:01 2010 From: russ at coldstonelabs.org (Russell Valentine) Date: Wed, 20 Oct 2010 03:42:01 -0500 Subject: [Ronja] modulation for tetrapolis In-Reply-To: References: Message-ID: <4CBEAB59.20606@coldstonelabs.org> I think I misunderstand or don't know what you mean. For example the bertest/pktloss utility that you can download and run to test the Ronja uses AF/PF packets which is a on the device level. The ronja operates on the physical layer it has no idea about IP. Later you can use ronjaping or just the regular ping utility which you can use whatever IPs you want on either side of a ronja link. Russell Valentine On 10/20/10 01:20, chetan cuddalore wrote: > hi could anyone tell me about the modulation technique and the data (packet) > transmission technique used in ronja in detail.I know its BPSK using > Manchester coding but what would be the ideal ip to test the working and the > transmission of packets.I stumbled upon the diagram for the twister circuit( > http://ronja.twibright.com/twister2/testing.php) and i'm a bit confused over > the ip used. > From twibright at hispeed.ch Wed Oct 20 17:00:54 2010 From: twibright at hispeed.ch (Karel Kulhavy) Date: Wed, 20 Oct 2010 18:00:54 +0200 Subject: [Ronja] modulation for tetrapolis Message-ID: <31738496.1287590456964.JavaMail.root@viefep13> ---- chetan cuddalore schrieb: > hi could anyone tell me about the modulation technique and the data (packet) > transmission technique used in ronja in detail.I know its BPSK using > Manchester coding but what would be the ideal ip to test the working and the > transmission of packets.I stumbled upon the diagram for the twister circuit( > http://ronja.twibright.com/twister2/testing.php) and i'm a bit confused over > the ip used. The modulation technique is IEE 803.2 optical 10Mbps modulation Some more details how the wired modulation is converted to optical and back is here: http://ronja.twibright.com/technotes/how.php Karel From tsuport at bol.com.br Thu Oct 21 13:34:14 2010 From: tsuport at bol.com.br (tsuport) Date: Thu, 21 Oct 2010 10:34:14 -0200 Subject: [Ronja] I need help with the construction of FSO RONJA In-Reply-To: References: Message-ID: <4cc0334616afc_2f8683d7e78190@winter27.tmail> An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101021/c6a62c77/attachment.html From twibright at hispeed.ch Fri Oct 22 18:59:19 2010 From: twibright at hispeed.ch (Karel Kulhavy) Date: Fri, 22 Oct 2010 19:59:19 +0200 Subject: [Ronja] Opensource cleaning fluid - please help testing Message-ID: <1287770359.4508.12.camel@sandy.dclient.hispeed.ch> Hello I just developed a cleaning fluid for bathtubs, sinks, tiles etc. Please if you can help testing. Ingredients: a) Vinegar, cheapest and strongest available. Flavourings don't matter. b) Dishwashing liquid soap (hand washing). c) Plastic bottle Procedure: a) Fill the bottle to max. 3/4 with vinegar b) Add dish soap and mix until the mixture foams on a clean (!) rag Mechanism of action: I suspect the dirt layer to be a matrix of water scale and grease. Vinegar dissolves only the water scale and is stopped by grease. Soap dissolves only the grease and is stopped by the scale. Therefore the penetration depth of either is limited. The mixture dissolves both at the same time. It also foams, keeping the active ingredients in contact with the surface. I tried on bathtub, washing basin and kitchen sink. Until now I always had problem cleaning these. Now I got shiny look like never before with not much effort! Looking forward to your experience :) Karel From tsuport at bol.com.br Thu Oct 21 00:02:54 2010 From: tsuport at bol.com.br (tsuport) Date: Wed, 20 Oct 2010 21:02:54 -0200 Subject: [Ronja] Help In-Reply-To: References: Message-ID: <4cbf751e8f045_1b4f187be7c21e@winter18.tmail> An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101020/a799ffe1/attachment.html From chetancuddalore at gmail.com Tue Oct 26 09:13:07 2010 From: chetancuddalore at gmail.com (chetan cuddalore) Date: Tue, 26 Oct 2010 08:13:07 -0000 Subject: [Ronja] help Message-ID: hello, regarding the explanation in the mailing list about the distance and range issue i had, ( http://lists.pointless.net/pipermail/ronja/2010-October/010458.html) Would i also need to change the RC component in the 10M receiver as mentioned in the ronja website http://ronja.twibright.com/faq/short.php or would just decreasing the lenses to 20mm on both the transmitter and receiver be fine? -------------- next part -------------- An HTML attachment was scrubbed... URL: http://pointless.net/pipermail/ronja/attachments/20101026/417f369d/attachment.html