I am building a TV lift with (hopefully?!) RF and dpdt switch in parallel. But my wiring is not working as expected...? Answered
I have the hard wired dpdt switch wired as attached and the relay as per the other attachment (but the incoming voltage to power the board and running through the relays to power the actuator are both 12v and from the same source). I am trying to have both a RF control and hard wired back up in the event of battery failure of controller or unit loss.
Both items work fine when wired up to the actuator alone but when put in parallel there is a real issue with nothing happening. It seems like there is a open circuit which is drawing a large current from the transformer but not doing anything with it. I think it may have destroyed the relays on the board though - no, no fuse in the system less that on the transformer :-(
I just cannot see the problem but I have found another wiring diagram (also attached but with an actual board shown on it) where there seems to be a whole lot less wiring but I dont know if this will achieve what I need to do.
I do not want to destroy another relay board by experimenting so would be eternally grateful for a little advice.
Can anyone assist, I am not an electronics expert but a mechanical engineer (could never get my mind around what I could not see!!)?