[mircemk] shows how to create a simple non-contact proximity sensor using little more than an Arduino Nano board ... a spring elegantly used as a hidden touch sensor that works through an ...

We’d seen it done with buttons, switches, gestures, capacitive touch, and IR remote ... (which are the “D” in LED) to use the LED itself as a temperature sensor. A diode’s voltage ...

This is a simple arduino project for a soil moisture sensor that will light ... is to try different values or use a potentiometer. Insert the probes into the soil that has the desired moisture when to ...