![arduino - How to connect one pin to ground when an another analog pin is triggered - Electrical Engineering Stack Exchange arduino - How to connect one pin to ground when an another analog pin is triggered - Electrical Engineering Stack Exchange](https://i.stack.imgur.com/jm2ar.png)
arduino - How to connect one pin to ground when an another analog pin is triggered - Electrical Engineering Stack Exchange
![electronics - Can you use an input pin instead of ground in Arduino circuitry? - Arduino Stack Exchange electronics - Can you use an input pin instead of ground in Arduino circuitry? - Arduino Stack Exchange](https://i.stack.imgur.com/7IXYd.jpg)
electronics - Can you use an input pin instead of ground in Arduino circuitry? - Arduino Stack Exchange
Arduino — Introduction to Pins. The Arduino Uno is one of the most… | by Aditi Shah | Vicara Hardware University | Medium
![Connecting multiple Grounds to one Arduino pin - General Electronics - The Contextual Electronics Forums Connecting multiple Grounds to one Arduino pin - General Electronics - The Contextual Electronics Forums](https://ce-forum.s3.amazonaws.com/original/1X/d688015eb06095054ac7c976fca7eb09b6f30b26.png)