SparkFun Electronics will be closed in observance of memorial day on Monday, May 29th. We will resume normal business hours on Tuesday, May 30th. Any orders placed after 2pm Mountain Time on Friday, May 26th will process and ship out on Tuesday, May 30th.

Cary Swoveland

Member Since: January 13, 2011

Country: United States



Have been retired for quite awhile. Formerly was, sequentially, a university prof, government policy advisor, self-employed consultant, software developer.

Spoken Languages


Programming Languages

C, Ruby


Berkeley, UCLA


Woodworking, electronics, robotics, Ruby programming


Some, but none of any import, and none of any interest to Sparkfun people.

  • I expect the heating pads would work well under bar grips on motorcycles or scooters. I elaborated a bit on the product page.

  • I once installed heating pads similar to these under motorcycle grips. They kept my hands nice and toasty when the mercury plunged. I preferred them to pricier integrated heated grips, as I could continue to use whichever grips I liked. This heating pad seems to be about the right size for that application. Attach to the bars with hairspray and add a rheostat to control the temperature. Take power from a circuit that is powered only when the ignition is on (e.g., brake lights), so you won’t drain the battery if you forget to turn off the heating pads. If the bars are hollow, you could run the wires inside.

  • If you’re like me, and have no idea what an FPGA is, see, for example, http://en.wikipedia.org/wiki/Field-programmable_gate_array.

  • Even though I wasn’t able to get onto the site, I’m not complaining. Sparkfun is great, and anyone would have trouble giving away $150k online in such a short time. More than anything, these “free day” experiments say volumes about THE POWER OF FREE.

No public wish lists :(