Member Since: November 21, 2010

Country: United States



Electronics enthusiast & hobbyist.

Programming Languages

C#, C, AVR assembly.

  • Why not the ATMEG32U2?

  • Is that really the right price for a compass module?

  • Done & done: SparkFun According to Pete 7-5-11: Diodes and Transistors

    Pete puts out some great material in this tutorial. He’s got others that are pretty informative as well.

  • Could be a great way to display bus arrival times, weather and more while sipping coffee and getting ready to put in contacts.

  • My Imp shield seems to have some bad connectors on the imp socket. I have to press lightly on the top of the metal card housing to get all the connectors to make contact with the rest of the circuit. Any tips? Do you have an improved shield?

  • Do the I2C lines (from imp pins 1 & 2) require pull-up resistors for this shield?

  • Here’s a link to the design files (Eagle schematic & layout) along with the PSD files for the board artwork. I use the pre-sensitized photo boards.


    The Sipex part is in Eagle already (download Sipex Custom from Eagles site). The other parts are from Sparkfun’s LBR.

  • I built a 5v boost regulator for this pack, which replaces the empty board in the non-serviceable end. More here:


  • That is one shinny quarter.

  • Great little piece of hardware - I was able to build one over the weekend using the firmware, schematic and other documentation linked on here. My only hardships came about from not setting the boot size fuses correctly. And I had to use an STK500 programmer for both the boot loader and the main firmware as I couldn’t get the Arduino IDE to connect to the AVR (started with a bare-metal chip). I know you guys just did a write up on your open hardware business model, but thanks again for supporting the weekend hobbyist!

No public wish lists :(