OpenSprinkler › Forums › Hardware Questions › DIY Kit Assembly Questions › new 1.42u build issues › Re: Re: new 1.42u build issues June 4, 2013 at 5:16 am #23749 RayKeymaster 1.35V is ok for D1. Different multimeters will give different results. D1 is a diode with fairly high(up to 3V) forward voltage. So I think D1 is fine.
