OpenSource solution for GPS video-overlay for Road-Racing. It is a high-speed (10 Hz) GPS tracker that records position and speed to an SD card, along with software to convert those positions to a nice graphical overlay to put on a video, for example from an action camera.

Motivation
I like building stuff. That’s pretty much it. My father is a pretty good road race driver, and I though it’d be cool if I could contribute to making his videos even more interesting. By principle, I also like building things over buying them, even if they may prove inferior in some ways, I will usually know how they work, thus I will be able to utilize and service them more readily.”

Link