Here’s another 5V piezo buzzer, but this one is different from the rest in that it’s compatible with both PWM receivers and with most racing drone flight controllers. When used with a flight controller, it can be setup as a low voltage alarm, lost model alarm and it can also be configured to provide status alerts like ‘no rx signal’ and other warnings*. If you use it with a traditional PWM receiver, simply connect it an auxiliary channel and activate it with a switch on your transmitter. If your radio supports failsafe, you can set it up so the buzzer will activate if your drone flies out of range.
​The buzzer is tiny and only weighs 2g, so it could be used on small racing drones through to biggest heavy lifting octocopters.
*Functions dependent on flight controller.
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