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Get Chorus RF Laptimer old version APK for Android
Drone Racer's DIY Chorus Lap Timer control software
The app is an essential part of the DIY "Chorus RF Laptimer" project, which is the open-source time tracking solution for small drone racing events.
Full project description including hardware description and the source code is available on GitHub: https://github.com/voroshkov/Chorus-RF-Laptimer