I'm attempting to use the UE3 to trigger a SainSmart 16 channel
12 volt relay board through the CB15. The current draw is too
much to use the PS12DC.
The relays can be triggered when pulling the FIO4-7 channels low
but does not respond to the channels (EIO0-7 CIO0-3) on the CB15
attached to the same UE3. Is there a difference between the U3 FIOs
and the I/Os present on the CB15?