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- Apr 16, 2016
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Can you share a photo of the entire setup ? I think it’s an wiring issueHelp!
I got my replacement relay board as the old one died on me, this one has an ULN2803 onboard, it's active high like the previous one.
I've wired it up and the board powers up, but as soon as I attempt to power a relay via the pi the board just switches off, the led of the corresponding relay briefly illuminates, the grounds are tied (I've not messed with anything) power supply is 12v 2amps, so should be enough for energise the relay coils.
Can't understand why it's not working properly, I've soldered the PSU wires and also the signal wires from the pi directly to the board.