Laser machines are very useful pieces of gear. You can send a very precise file to it and it will cut or etch it perfectly and accurately as many times as you like. The entire machine is built with accuracy and repeatability in mind, so what if you want to have some analog fun with it? You would need to do some hacking just like our friend Martin Raynsford
In really old scanners you will normally find a florescent light source but new ones use a RGB light bar to shine on the document being scanned. There are lots of ways to make the thing light since it is a common positive 5 volt RGB light bar. To kick it up a notch Hack Shed decided to tie it into an Arduino and make it totally remote controllable.
In this project Steve Hoefer uses some electronics to create some fun chattering teeth that will give you some fun incentive to keep brushing your teeth for long enough to maximize effectiveness. A small microswitch waits for you to remove your toothbrush and the 555 timer goes to work counting down your 2 minute brush time. A servo motor that has been hacked to operate in continuous rotation mode
If you are into high end audio this project is probably not for you. If you are into tinkering with electronics then dig in. RimstarOrg shows us how to build a Piezoelectric Crystal Speaker. He took a Rochelle Salt Crystal that he made and electrically connected to it using some tinfoil, once rubber banded to a tin can for amplification the speaker was complete. When an alternating voltage is
I have worked in quite a few companies where the employees have a dedicated desk or work space, some had lockable drawers but in most cases everything was unlocked. I have never had any issues with things going missing but Youtube user RuthJ180 didn’t have the same experience as I did. In her case some of her fancy pens and change was going missing. A mini spy camera and
) Our friend Rick Crammond has built a Hauksbee Generator. “The idea is that a triboelectric (electrostatic) effect occurs from sliding hands on glass. The voltage generated ionizes the gases in the globe, creating a blue plasma glow inside. Our rotating globe is a pyrex lab flask containing air under a partial vacuum, is mounted on a bicycle axle with skateboard bearings, and driven by a remote-control model aircraft
 If you hate when you don’t have a partner to play ping pong with you why not build a robot. Ulf Hoffmann is an industrial mechanic and has some creative ideas. His Ping Pong Robot (translated) is quite amazing, you can see it in action above. The videos below demonstrate the building blocks to get to where the robot is today. Via: Laughing Squid
