As the inductance changes, so does the delay and, thus, the Arduino can sense metal, as you can see in the video below. The simple principle is also simple in practice. Besides the Arduino and the ...

Special attention is given to explaining the wiring, making this is a good project for those just ... Given how cheap Arduino clones can be had online, this is becoming a more common practice.

If you want to attach a light, motor or sensor to the Arduino board, you just snap it on -- you can spend more of your time coding rather than dealing with wiring and other hardware hassles. Home News ...