V4 issue in extreme cold temperatures
Spring is approaching, so over the last few days I put the steering system back into the tractor. I took it out for some tuning today (first time with the v4 FB) and after about 5 minutes it locked up on me. The FB is being powered via USB, and I have no reason to believe the USB cable came loose. Disconnecting and reconnecting the DC jack did not resolve it. I had to disconnect/reconnect the USB connection to get control of it again.
I only have relays on two of the FB outputs. One was on at the time of the lock.
Do you have (or have you looked into) some kind of watchdog process on the PIC? If there was a watchdog, would that also kill the handle in the driver, thus requiring a software disconnect/reconnect to get control of it again?
Should I try changing the jumper so that the PIC is powered by the DC jack instead of USB?