hey folks looking to get some help on my aquarium dosing pump project. I am soo close to being done but I cant seem to figure this one issue out.
I have an UNO hooked up to a 8CH relay module, driving 12v generic ebay dosing pumps. everything code related works flawlessly relays firing at the correct times etc.. until I power up my 12v source, as soon as any of the dosers get power it resets my Arduino.
I've done some trouble shooting all components have separate power sources and I've tried adding a 1N4001 across the motor leads