OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › Relay not disengaging with 16 relay board › Reply To: Relay not disengaging with 16 relay board
June 27, 2017 at 4:11 am #46927
I think I got it figured out. After reading around it looks like you need to pull down each relay with a 1k resistor. So I ended up taking a jumper from gpio 18 (for example) and connecting a 1k resister to it. Then from the resistor I used another jumper and connected it to one of the pins on the relay board. Also I needed to set the Active State (I think that’s the setting) in OS to ‘low’.