OpenSprinkler › Forums › Hardware Questions › OpenSprinkler Pi (OSPi) › Rain sensor on raspberry › Reply To: Rain sensor on raspberry
July 16, 2019 at 5:00 pm
#61702
Ray
Keymaster
Yes, pull-up is required because the firmware itself doesn’t enable pull-up, so it assumes there is external pull up. You can modify the firmware yourself to enable the internal pull-up.