Jans Gentsch has made his compact version of the Strobit Triggr available to the community, his version, the Strobit M08 based on AVR design can be found here. Please note that there are a couple of things that need doing to the PCB, if you get a chance to implement Jans design, please post back any changes to me so I can make them available.
I’ve attached the Eagle-Design-Data as well as the source code. I haven’t found time to do anything on those since my post, so the are not in the best state. There are a few Problems with the board design:
Transmitter – There is a connection missing between the processor and NIRQ of the transmitter-module (the transmitter module doesn’t have a fifo, so that the nirq-line is needed to clock out the data). I just added a piece of loose wire during assembly.
Receiver – NIRQ isn’t connected as well, so I am constantly polling, not really a power saving design. however I am still running on the first set of batteries so it’s not like they are being drained empty immediatly.
IO-Board – Thr optocoupley was meant to sit on the bottom side but I got confused. It has to sit on top now.
Getting everything into the housing was a major challenge.
The source code has been developed using avr-gcc and the eclipse ide.
As it stands only the most basic function, tiggering, is working. The control flow will have to be reworked in order to add the rest of the functionality. And of course my “magic” trigger id should be changed.
Alle the best
You will need Eagle PCB to view/edit the schematics and PCB files, found here –http://www.cadsoft.de/
The firmware is written using winavr found here – http://winavr.sourceforge.net/