Search for: Log In Register OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › RF transmitter on GPIO Tagged: 433mHz, Radio, RF transmitter, Transmitter This topic has 0 replies, 1 voice, and was last updated 5 years, 4 months ago by Kunstflieger. Viewing 1 post (of 1 total) Author Posts August 27, 2019 at 4:41 am #62366 KunstfliegerParticipant Hello, is it possible to add a RF transmitter direct on a GPIO? Or how is the transmitter connected? In the diagram I couldn´t find any information. Regards Kunstflieger Author Posts Viewing 1 post (of 1 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) › RF transmitter on GPIO