[FrankJ]

Originally Posted by jtrv

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Yea, I was just wondering if the software would know. We always just had it reset itself to retracted in autonomous but it was a minor pain in the pits when nothing worked until we hit the extend button on the controller again.

The FRC legal valve is a bistable device. The code is open loop (no feed back) Without a sensor to confirm the valve position, the code doesn't know what position the valve is in. When using these valves, I always have the programer keep the solenoid energized if the valve position is important. (Yes they will generally stay in the last energized position.) Obliviously there is no way to keep the solenoid energized with the robot disabled.