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Using the OSTC for eCCR
Posted: 13 Jul 2009, 19:40
by Mark_none
Hello,
I would like to use my OSTC to control a homemade eCCR I've planed. Knowing that a solenoid driver routine is not in the current code maybe you can give some hints about this?
Mark
Re: Using the OSTC for eCCR
Posted: 14 Jul 2009, 09:27
by heinrichsweikamp
Hello Mark,
To control an eCCR you'll have to modify some parts:
- The firmware of the O2 board so it drives the solenoid to keep your ppO2 within range. It's open source:
Firmware of O2 Board and should be quite easy
- The hardware: The board does not have a solenoid driver circuit (Btw. What kind of solenoid are you going to use?). The board has some spare pads you could use to interface to a driver circuit. Or (better) built the board completely on your own and use the OSTC for monitoring only. The OSTC hardware can not drive a solenoid directly and _we_ have no plans to implement such a critical feature into the firmware, sorry.
regards,
Matthias