Hi
i need a bit of assistance i have 3 pumps rated at 12v 3As each, i have connected them to a relay board for arduino.
the issue i am having is that i want to turn on all 3 pumps at the same time. my programming is ok and works as i have tested them with leds. i can turn on one pump at a time, but not all together. im guessing its a voltage and amps issue, but dont know how to solve it
if anyone can help that would be great thank you.