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Using the LBEEP feature
kh4 edited this page Jan 3, 2015
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LBEEP allows implementing link quality 'beeper' with no extra hardware by utilizing the audio channel of the FPV video link.
In this mode the audio is silent and beeps will be emitted when packets are lost.
Circuit:
The lbeep output can be connected using pair of diodes to allow normal audio to pass thru unaffected while the beep will 'take over' when needed.
Circuit: