OpenChrono Airsoft Chronograph and Tracer
Description
[Link to this project on Printables](https://www.printables.com/model/232238-openchrono-airsoft-chronograph-and-tracer). Bullet Speed Measurement with Arduino and IR Phototransistors. Attaches to the front of an airsoft gun like a silencer. You can find [a complete write-up and build guide on my website](https://www.xythobuz.de/openchrono.html). All source code and design file [are in this git repository](https://git.xythobuz.de/thomas/OpenChrono/).
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