Hello everybody. In this instructable I'll show you how to make easily a contactless switch with a distance sensor. It might be very useful for your house or other machines.
Because I'm a student and I'm making a project about 'Passive house' and I want to have a special switch.
What you need to make this switch, are:
-a distance sensor. I prefer the HC-SR04 or a HC-SR05.
-an arduino board
-an LED to test the program