If you have a few dead DVD players sitting on the shelf collecting dust you could rig up a quick and dirty power supply to make it into a burning laser. There are laser drivers available but what is the fun in that.
If you are in need of a great battery charger or want to learn some more about how a dedicated power management controller gets configured this project by K.C. Lee is worth a look. It uses the Microchip TC4426A Power Management IC to manage the charging and analyzing of two batteries. “This is a useful tool for determining the charge/discharge characteristics of batteries which help you reuse or for
When you are shooting handheld video you will usually get lots of camera shake. The solution is closer than you think, Matthias Wandel demonstrates how some common things that you already have laying around can dramatically improve the video quality without spending thousands on something like a steady cam rig.Â
This is a great looking lamp that allows the users to interact with the lamp colour in an interesting way. “Colour injector is an interactive multi-coloured lamp designed as a physical expression of the way red, green and blue light are used in digital interfaces to create a full spectrum of different hues. Syringes suspended below the lamp are connected to another set inside the body using clear tubes
Instrument clusters are no longer truly mechanical analog gauges connected to sensors directly in your car. The car is a big sensor network which communicates to the dash board instruments. This means that you can re-purpose them like Esko Haas has done with his 2003 Fiat Stilo closk. If you want to build on his work you can find his code here. “By the way, I’m using this board for connecting: http://www.ittgroup.ee/en/mikrokontrollerite-arendusplaadid/545-avr-tlcd-128can.html It’s compatible
Using an old hard drive, some 1 watt LEDs, a complete redesign of the hard drive motor drive circuit and an Arduino Marcin Gosiewski (damago1) has built a great looking clock. The display is nice and compact since he is using a 3.5 inch hard drive as his base. “The project involves controlling HDD motor (3 wire brushless dc electric type BLDC) using open loop control without feedback, and using back
 Victor8o5 built this interesting 50,000V High Voltage Power Supply which is fun but can be dangerous if not given the respect that high voltages demand. If you are interesting in getting some serious spark jumping action this build is for you. Best of all the main component can be found for free from an old TV. “This high voltage power supply has been designed to output a fixed voltage of
