Hi guys, This is a quick how to on my $20 GPS speed logger. If it all goes smoothly you don't need much in the way of soldering and coding skills but if you run into problems it could be an adventure if you lack the knowledge base. You have been warned. You can make this as pretty as you want, but mine is held together with hot glue and I used cork to make the case, so you can get away with some pretty dirty work-arounds if you're so inclined. There's a video here . Update (Nov15): I accidentally plugged in the wires with the wrong polarity and it didn't look good for a day or two. The unit still powered up with the Adafruit logo, but that was it. If you want to avoid this potential oopsy: use a proper power plug of some sort (proper meaning with polarity) Add a diode to the input to protect against wrong polarity I finally got around to hooking it up to my computer for diagnosis and SURPRISE, it works perfectly running off USB power. So, doing the worst thing you