From instructablesA user fluxaxiom:
This project includes instructions on how to build the device as well as a link to the project code on github that will need to be uploaded for it to run.
An Arduino based datalogger for the purpose of syncing data with video to create an on screen display.
In other words, you are riding your (bike, sled, trike, car, feet, board, etc.) and you have a portable action camera such as a gopro hero, and you want to put a dashboard of gauges on the video that tell you all relevant information about the ride.
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