I cracked open all my electronics goodies and dove into the Mintyboost build this morning.

I had the build guide pulled up on my netbook while I built it.

Soldering

Partially built

Completed

Let’s see if it works.  I ran the battery down on my Nexus One for a while.

Charging!  Success!

It also charges my wife’s Android G1.

Thanks Adafruit!  If you have a soldering iron and like building things, pick up a kit and make one yourself.