I need to check the motor spinning direction with the ‘MOTOR TEST’ in mission planner. Burnt Motor Burnt ESCsĪpart from the two cases above, there was another incident of ESC and motor fire during optional hardware testing in mission planner. The motor was not turning freely, saw burnt insulation in the windings, suspecting burnt windings due to over current. I disconnected the Lipo battery connector, but this time I lost both ESC and motor. While attempting the AUTO mission, quad flipped over on the ground and burnt another ESC.
All these modes were successfully tried out. There other flight modes such as Althold, Loiter, Circle, Brake, Land, and RTL were tested. Later the quad was taken to an open area.
The burnt ESC was replaced with a spare one, damaged frame arm renewed, ran ESC calibration again. I don’t know why, but the motor survived. The result was the corresponding ESC fire due to over current. This made the motors to accelerate with blades in a blocked condition. That means I was giving a yaw command to the copter. While trying to disarm the copter, in fact, I wasn’t moving the throttle down completely. Now, the mistake was certainly from my side. Burnt and Deformed Frame Arm Damaged Power Distribution Board Broken and Melted Radio Receiver Antenna Found one ESC completely burnt, radio receiver antenna damaged and melted and one of the arms of F450 frame burnt and deformed badly. After all the smoke and fire got extinguished, I disconnected the battery. So I was scared to go nearby, fearing an explosion. Since it was my first experience, I misunderstood it as a Lipo battery fire. I tried to put the RC transmitter throttle down and yaw left for disarming the copter with no luck. Next time while attempting some hard manoeuvres, the quad accidentally made contact with a tree and fell upside down losing control. I survived first few crashes without any significant damages to the quadcopter only a few scratches on the frame and plastic propellers.
Scared of government regulations, all these test flights were carried out near my house only. I crashed it several times even in stabilize mode. So it was really challenging for me to control my quadcopter. I have never attempted to fly a multirotor before. I flashed the pixhawk 2.4.8 with Ardupilot Copter 3.6.9 firmware from mission planner and did all the mandatory hardware setup. To be honest, nearly all the parts are shoddy clones ordered from Aliexpress and Banggood. I would like to share my experiences with a pixhawk quadcopter which was assembled a few days back. I’ve heard a lot about ESC fires occurred with quadcopters.
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