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The importance of failsafe

We found an article sharing from a pilot about failsafe. Let’s see!
 


Nowadays, the flight controllers are equipped with various powerful functions. When flight controllers detect any error messages, pilot can program the corresponding actions; this is called failsafe.
 
APM / Pixhawk can be programmed to RTL and LAND when losing signal from the radio transmitter.
 
For racing FPV, some pilots forgot to set failsafe. (For detailed setup, please refer to the instruction of each radio transmitter.)
 
The author filmed a demonstration about drones without failsafe.
 
Note: Before testing, MUST remove the propellers!  



 
In the video, the author disarmed CC3D and pulled the throttle to middle to simulate taking off. The motor kept running. Later, the author turned off the power of radio transmitter to cut off the signal to CC3D. We can see when the signal was cut off, the front motors sped up, but the rear motors stopped running. The motors went back to normal status until the signal was connected. If this happened in the flight field, we will see the drone spinning and crushing.  
 
Other flight controllers might act differently; some could keep outputting signals, and the drone would fly to nowhere. It could cause damage to anything and anyone. The author suggests to all pilots, setup failsafe first. (For detailed setup, please refer to the instruction of each radio transmitter.)
 
The author filmed a demonstration about drones with failsafe. When the author turned off the power of radio transmitter, we can see the four motors stopped running. If this happened in the flight field, we will see the drone stop flying and fall.
 


How to check if failsafe is activated:  
Before testing, MUST remove the propellers!  
 
1. Turn on flight controller and radio transmitter
2. Disarm flight controller
3. Pull the throttle
4. Keep the throttle to middle position and turn off the radio transmitter
5. Observe the motor action
 
 Article Source: Mr. Li-ming Huang
 

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