I'm working on a project but I'm having issues with a few components. I'm using 8 1.5V batteries to power a water pump or a LED light strip. I'm using a relay to control when the water pump/LED strip is turned on.
This small project is very much like this one. The only difference is the power supply is 12V DC.
The LED strip/Water pump does not turn on when the signal is sent to the relay and I'm not sure why this is the case. When I connect the + terminal of the LED strip/water pump to the normally closed terminal on the relay it is constantly on, which I would expect. I don't understand why when I connect the + terminal of the LED strip/water pump to the normally open terminal of the relay it does not turn on when I send the signal to the relay.
I'm at a loss and am quite perplexed. Can anyone provide an explanation?
I'll post the exact source code and a diagram of my connections later today.
I've seen a post online that suggest I run a diode and capacitor across the motor. I've seen other posts that suggest the diode, but made no mention of a capacitor. Can someone explain this? Also, would I need to do the same thing for an LED strip? My gut tells me no, but I'm a noobie so I can't trust my instincts here.