Thanks to all of the backers so far! I will be posting a quick demonstration video of the switch tonight. As for the few questions that have been posted: I will provide +5V solder holes in addition to the USB port for people wishing to tap into the switch's power for other uses. As was posted by Eric, I don't recommend using that to power the Pi via GPIO as explained in his link. At the finish of the campaign I will send a survey and backers will pick from the following USB options on their 2amp and 3amp boards (the separate 5V pads will be on all designs, regardless of USB plug style): 1) single USB type B female plug (use a standard USB to micro-USB cable from switch to Pi) 2) dual USB female ports 3) micro-USB male connector (like the main photo)
Each board will come with approximately 18inches of the power leads (red, black, yellow wires) for wiring into your car. The open ends will have bare wire. I recommend using any of the widely available radio wiring harness for your specific car model so you don't have to permanently alter your car's wiring system. Thanks again to all the backers!