30th Mar 2012

SiC LED: Half the cost, same great taste…

NoMi Design’s northern lab recently received some next generation gallium-nitride on silicon carbide LEDs.  These new XBD series LEDs from Cree are promising double the lumen per dollar of existing...

05th Mar 2012

The Sound of Switchmode

If you’ve ever wondered what different switch mode power supplies would sound like if used to drive a speaker, here is an untested circuit you might try.  Using a zener...

02nd Mar 2012

Hackaday: WindPOV project…

My WindPOV project was featured on Hackaday: http://hackaday.com/2012/03/02/wind-powered-pov-weather-station/ It displays the temperature and humidity on the wing tip by way of persistence of vision. The idea of using our Contiki...

27th Feb 2012

6DOF Arduino: Compass & Accelerometer

This Arduino library is a mixed bag containing a number of functions to facilitate rapid sensor integration between a three axis compass and a three axis accelerometer.  Where speed is...

17th Feb 2012

BringMeChina: Maker Carnival Beijing

Maker Carnival 2012, being promoted as China’s First Global Mass Creation and Open-source Sharing Faire is giving away 20 round-trip tickets to their upcoming event for anyone with a project...

15th Feb 2012

Toaster Oven: Reflow SMD Soldering…

There’s a special place in my workshop for the toaster oven, that place is on the workbench.  Using an toaster oven to reflow circuit boards is both fast and easy....

12th Feb 2012

Shake, Rattle & Roll: The MMA8453Q & Arduino

So we finally finished putting the polish on our latest Arduino library designed for use with the MMA8453Q Accelerometer and its siblings the MMA8451 and MMA8452.  This library gets you...

29th Jan 2012

How to: LED as a Light Sensor

LEDs LEDs LEDs, is there anything they can’t do?  Besides adding that special crunchiness to smooth peanut butter, they also make awesome light level sensors.  Here’s one way to do...