Hmm, there may be a software issue I am not aware of. Here are two additional things you can try:
1) Go to /home/ubuntu/demo and there should be a simple demo called selftest. Try to run this (make sure to run this in sudo) and see if that can activate the valves
2) In case you didn’t notice, we have just released the unified OpenSprinkler firmware:
https://opensprinkler.com/forums/topic/announcing-opensprinkler-unified-firmware-2-1-3-for-avrrpibbblinux/
this is a new firmware that’s fully compatible with the standard OS firmware.
If neither produce any different results, there may be a hardware issue. You can email [email protected] to proceed.