In a standard keypad wired as an X-Y switch matrix, normally-open switches connect ... connect to the column C1-C3 pinouts of the keypad Next is a project example, where the Arduino is instructed to ...

Leaving the joke aside, let me show how you can achieve this. You will need the Arduino Board, a 560Ω resistor, and LED and the code example below. We set the pinButton variable as integer 8 and we ...

This is a simple project. It uses an Android device to switch an LED driven by the Arduino. Connectivity is provided by the Bluetooth module inserted in the breadboard. But one look at the UI on ...