23 lines
823 B
Markdown
23 lines
823 B
Markdown
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# Buzzer
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Cleanflight supports a buzzer which is used for the following purposes, and more:
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Low Battery alarm (when battery monitoring enabled)
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Notification of calibration complete status.
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AUX operated beeping - useful for locating your aircraft after a crash.
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Failsafe status.
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Buzzer is enabled by default on platforms that have buzzer connections.
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## Types of buzzer supported
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The buzzers are enabled/disabled by simply enabling or disabling a GPIO output pin on the board.
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This means the buzzer must be able to generate it's own tone simply by having power applied to it.
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Buzzers that need an analogue or PWM signal do not work and will make clicking noises or no sound at all.
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Example of a known-working buzzer.
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http://www.rapidonline.com/Audio-Visual/Hcm1205x-Miniature-Buzzer-5v-35-0055
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