OpenSprinkler › Forums › Hardware Questions › Open sprinkler 2 SM › Re: Re: Open sprinkler 2 SM
February 9, 2014 at 2:49 am #25988
Hmm, if I understand correctly, you mean the fuse is blown when you power the controller by USB? Since the fuse is on the 24V AC line and not on the USB power (5V) line, I can’t think of any obvious reason why this would happen. Did you measure the resistance between VIN-GND, as well as VCC-GND? What are the resistance values you are getting?