OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › sprinklers_pi – An alternative sprinkler control program › Re: Re: sprinklers_pi – An alternative sprinkler control program July 25, 2013 at 5:21 am #24927 rszimmParticipant Yes. Master valve / pump. You can selectively define which zones require the master valve and which ones do not.
