I finally got around to building a voltage regulator box to power my Microtrack from a large 9 volt Lithium Ion battery.
I fully intended to buy a Juice Box from Todd Ramsden but was in the mood to try something simple myself.
I ended up buying the parts from
Aaron Dunlap. For $9.50 you get a VR component,
a USB connector, some wires, a standard 9v battery holder, a switch, and an LED. I threw most of parts away and only used
the VR component and the USR connector. I also added a project box and a size "M" power connector from Radio Shack.
The project box included a small perf board and mounting hardware. The Aaron Dunlap kit shows it mounted in an Altoids gum
container. I thought about using one of the Altoid containers but it looked pretty cramped. Maybe next time. All told I have about $17 in parts and a couple hours of labor into the project and suprisingly the thing worked
Based on my experience, unless you like to
tinker with stuff like this, buy one from Todd!