Capacitive touch sensors are entirely in the domain of DIY, requiring little more than a carefully-chosen conductive surface ...

Learn how to build your own desktop fully functional robot arm powered by Arduino hardware and assembled using 3D printed parts.

Both of them were given the most Hackaday title we could think of, “A 3D-Printed Nixie Clock Powered By An Arduino Runs This Robot “, and told to get on with it.

3D printing filament monitor “This is my DIY filament holder with an integrated scale for my 3D printer, using arduino, a load cell and an OLED display.