In Denmark the law states that an alarm should be mounted on a multi-copter when used professional.
The alarm should sound when the multirotor goes into Failsafe RTL or RTL from RC-Tx.
I have a alarm (with built-in driver) that sounds like a burglar alarm and a small servoswitch. When it is connected to a servo output and looses the RC-Rx signal or goes low, it triggers a relay and sounds the alarm. The alarm is powered by 12 volt via a relay.
I need help to make a servo-output from/on the Pixhawk flight controller to my servoswitch, when Pixhawk goes in to RTL mode. It doesn't matter if the servo out is high or low.
This task is the final check, and absolutely critical, for me to get my final checkout to receive my commercial license in Denmark. Any help will be greatly appreciated :-)
Best regards, Martin
Air Spot, Denmark