A lost alarm is very useful on a FPV racer. I did this with my Taranis X9D+ transmitter, D4R-II receiver in PPM mode, for my Eachine Racer 250 that comes with a CC3D board. I have flashed it with BetaFlight, which has BP6 support. Does not work for CleanFlight as special modifications to the firmware is needed to support Beeper at Pin 6.
Contents:
0:16 - Beeper modification
0:26 - FC cable modification
1:12 - BetaFlight settings
2:07 - Demonstration
Eachine Racer 250 from Banggood.com:
Music: Cruising Back in Time, by Eric Matyas
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#Shorts massive servo wire attack
Enduro Rally 2021 - Pabradė military base