OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › Short success storry for a change;-) › Re: Re: Short success storry for a change;-) May 23, 2014 at 7:10 pm #26917 mw46dMember @Scott, did you try to measure which voltage your original transformator delivers? Maybe you could use that instead of the wallwart? Just an idea. Thanks, — Marco