From ricky at the-houghtons.com  Tue Mar 31 05:06:24 2009
From: ricky at the-houghtons.com (Ricky Houghton)
Date: Tue, 31 Mar 2009 00:06:24 -0400
Subject: [Ronja] Source Code Availability
Message-ID: <49D196C0.4040005@the-houghtons.com>

I'm interested in exploring this project but wanted to start with 
building and exploring the source code. (My background is software.)

Can you tell me where I can find it or download it, the server linked 
from the home page appears dead.

Thanks so much,

Ricky


From twibright at hispeed.ch  Tue Mar 31 09:33:22 2009
From: twibright at hispeed.ch (Karel Kulhavy)
Date: Tue, 31 Mar 2009 10:33:22 +0200
Subject: [Ronja] Source Code Availability
Message-ID: <17344219.1238488403226.JavaMail.root@viefep15>

---- Ricky Houghton <ricky at the-houghtons.com> schrieb:
> I'm interested in exploring this project but wanted to start with 
> building and exploring the source code. (My background is software.)
> 
> Can you tell me where I can find it or download it, the server linked 
> from the home page appears dead.

The code is on svn+ssh which is not accessible publicly. I don't know how to make
it accessible publicly. I could download it and tar it and place it somewhere. Do you
have some FTP where I can upload like 400 megabytes?

Regards,

Karel

> 
> Thanks so much,
> 
> Ricky
> 
> _______________________________________________
> Ronja mailing list
> Ronja at lists.pointless.net
> http://pointless.net/mailman/listinfo/ronja



From twibright at hispeed.ch  Tue Mar 31 09:48:02 2009
From: twibright at hispeed.ch (Karel Kulhavy)
Date: Tue, 31 Mar 2009 10:48:02 +0200
Subject: [Ronja] News from the RX development
Message-ID: <25781710.1238489282559.JavaMail.root@viefep15>

I have improved the frontend even more so the range increase should be even more than 35%.

The trick is that the working resistor of the photodiode creates most of the receiver
noise. The lower the value, the more noise. Low value is needed when Ronja runs in sunlight, where the noise doesn't matter because there is much more noise from the sun
anyway. But in the darkness the value could be increased dramatically and the noise dramatically reduced.

For this I made a photocoupler from a photoresistor and green superbright LED. It can
regulate the resistance from 90 Ohm to beyound 40 Megaohm (where my meter doesn't measure
anymore). The current standard resistance is 120 kOhm and the one that would improve range by 35% is 390k.

Now I made a PI controller http://en.wikipedia.org/wiki/PID_controller that tries to keep the photodiode voltage at a constant.

I have check the signal shape and it's OK. I don't have enough stages built yet to
truly measure the range.

Karel