YouTube channel How To Mechatronics has created a great tutorial with full instructions on how to create your very own Arduino powered 3D wire bending machine.

(basic wiring, pinout, and output signal) Adding Arduino to your rotary encoder Now that your rotary encoder hardware is up and running it’s time to tell your Arduino what to do with the encoder ...

Well tech tinkerer Joe Desbonnet has whipped up what he dubs "poor man's NFC" using an Arduino, some magnet wire, and any compass-equipped Android smartphone (which is almost all of them).