Activity › Forums › Questions & Troubleshooting › Software & Firmware › Problem Maxi Automatin between Controllino_AI9 and Controllino_AI10 › Reply To: Problem Maxi Automatin between Controllino_AI9 and Controllino_AI10
MemberSeptember 30, 2021 at 9:09 am
please note that voltage divisor at screw terminals works as an internal pull-down resistor. So you shoud connect the button between the terminal and the supply voltage. Then it should work, but – you should not activate internal pull-ups in the microcontroller, and it will be inverted (HIGH when pushed, LOW when pulled).