Search for: Log In Register OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › Where is the mini-relay? Tagged: relay This topic has 2 replies, 2 voices, and was last updated 4 years, 1 month ago by jakestevenson. Viewing 3 posts - 1 through 3 (of 3 total) Author Posts January 15, 2017 at 2:57 pm #45207 jakestevensonParticipant I’d like to make use of the mini-relay on my open-sprinkler pi, but I have no idea where the pins are physically located! Can someone point me in the right direction? January 22, 2017 at 9:59 pm #45274 RayKeymaster The mini-relay has been removed from the circuit a while back (probably more than a year back). If you want to use a relay, you can get a 24VAC relay and connect it to any zone like a sprinkler valve. We have tested several 24VAC relays that work fine with OpenSprinkler: https://opensprinkler.com/using-24v-ac-relays-with-opensprinkler/ Also, if you are looking to control powerline devices, you can use an RF transmitter in conjunction with RF power sockets. RF station is now a standard feature in OpenSprinkler firmware, and OSPi circuit board has pin headers that you can directly plug a RF transmitter into. This feature is explained in this blog post: https://opensprinkler.com/opensprinkler-firmware-2-1-1-new-feature-control-remote-power-sockets/ January 23, 2017 at 10:44 am #45289 jakestevensonParticipant Thank you for the update. I guess I’ll go with my own relay board through GPIO. Author Posts Viewing 3 posts - 1 through 3 (of 3 total) You must be logged in to reply to this topic. Log In Username: Password: Keep me signed in Log In OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › Where is the mini-relay?