OpenSprinkler › Forums › Hardware Questions › DIY Kit Assembly Questions › Trouble powering 1.42u with 24vac › Re: Re: Trouble powering 1.42u with 24vac
June 24, 2013 at 4:33 am #24529
If the circuit works with USB power, it means at least everything other than the power supply section is working. Now, did you follow the build instructions to test VIN to GND voltage, as well as VCC to GND voltage? Are they roughly 5V and 3.3V respectively (assuming the controller is powered by 24VAC only)?