Profile Topics Started Replies Created Engagements Favorites Search replies: Forum Replies Created Viewing 51 post (of 51 total) ← 1 2 3 Author Posts May 19, 2015 at 3:08 am in reply to: drive 9V valves #37796 DavidParticipant Thanks, to control a relay board or a H-Bridge i need GPIOs. How can i tell the software to set the GPIO? Author Posts Viewing 51 post (of 51 total) ← 1 2 3