Hi! My water pump and relais module just arrived and I wanted to test them out. After connection everything and in the end putting the GND of the pump and power supply toghether my pump just started with no code. I tried to fix the Problem with code but nothing worked. I also asked AI but it kept telling me the same things again 100 times. So I wanted to ask if my relais is broken.
Here are some pics if more is needed just ask!
Its also not easy to see on the picture but when I hold the GND cables toghether both LEDs light up.
You need to upload the sketch (the .fzz file that you saved the sketch into, upload is 7th icon from the left in the reply menu) so we can see what the wiring looks like. Pictures aren’t particularly useful in diagnosing problems. That said here are a few suggestions of things to try. First connect the pump like this:
in this configuration the pump should not run as there is nothing driving the relay and the NO connection is normally open. Change the wiring to this and the pump should then run (as the NC connection is normally closed and the pump should run.)
If both of those work then set the wiring back to the first set up (on the NO connection) with the pump not running. Now provide 5V to the relay board from the RPI like this
if the pump starts connect the blue wire to the ground wire and see if the pump stops. If the pump does not start connect the blue wire to the 5V connection and see if the pump starts. If the pump doesn’t start (the relay should click when you connect the wire one way or the other) then the relay module is likely broken. If both of those work connect the blue wire to an I/O port on the RPI and then use software to turn the port on and then off. The pump should then start one way or the other.
Peter