OpenSprinkler Forums OpenSprinkler Unified Firmware Need positive logic from the 74HC595 output Reply To: Need positive logic from the 74HC595 output

#39140

Ray
Keymaster

Actually as I re-read the posts: you should NOT modify the gpio file at all, because that will reverse the logic for all gpio pins, not just to shift register. In fact, this won’t even work for shift register because what you are trying to accomplish is to reverse the logic on the shift register outputs, not on the inputs.