30th Aug 2010

LED Flashlight with 1w Constant Current Drive

A constant current LED driver was implemented to power a 1 Watt Cree P4 XR-E providing roughly 85 Lumens @ 350 mA. The constant current SMPS was based on the...

25th Aug 2010

9 Watt LED Desk Lamp

A desk Lamp was realized with a 9w LED module, a salvaged Pentium slot heatsink and an AtMega 8. Two switch mode supplies were used, one to provide 5v for...

21st Aug 2010

CNC Cutting board inlay

On short notice I was requested to make a turtle inlay into a cutting board. The source image was clipart provided by Google, polished with a bit of Photoshop, added...

19th Aug 2010

WindPOV Weather Station

A wind turbine powered weather station displaying temperature, humidity and wind speed by persistence of vision using 8 white LEDs along a wing tip. The turbine blades were cut from...