Simple Useless-Machine-upgrade to Torsten's Arduino Uno case, using a mini servo, an Arduino Uno and a switch. Easy to build! In action: https://www.youtube.com/watch?v=oNcqNcCd2UA&feature=youtu.beStep 1: Print both parts and the Arduino Uno case (if the normal case doesn't print properly on your printer, try the 0.3mm or 0.4mm gap version) Step 2: Attach the lever to the servo Step 3: Mount the servo on the case Step 4: Assemble the switch Step 5: Wire your Useless Machine: Step 6: Upload the example programm or your own to the Arduino Step 7: Nothing, you're done! Please upload a photo ;)