Working on a Quadcopter with APM Copter/ PX4. All the calibrations done successfully.
I can understand that the NO RC RECEIVER error may be shown as the throttle is below failsafe. Once I increase the throttle below failsafe, the FAILSAFE error goes away. The moment I go beyond failsafe level the LED turns SOLID GREEN on the Board, removing the error NO RC RECEIVER and DISARMED. But the below shown trials are proving quite irritating.
When connected with USB - Transmitter ON. Receiver powered ON (separately). Pushed the RED arming button. RED LED turns solid but the HUD shows DISARMED. The board kept flashing yellow LED. After a few trials, got a solid green LED on the board. Motors started rotating.Tried with increasing and decreasing Throttle, everything is fine. Lowered down the Throttle to stop motors. After lowering the Throttle, the board started flashing yellow and motors kept rotating. Disconnected battery to stop the motor operation.
When connected with 3DR Telemetry - Transmitter ON. Receiver ON. Pushed the RED arming button. RED LED turns solid but the HUD shows DISARMED. The board kept flashing yellow LED. After increasing the Throttle stick above failsafe value, board got a flashing green LED. After few up and downs in throttle stick, LED turned Green solid. Right YAW and Motors started rotating. After a point, the speed of the motor not varying or not increasing. Decreased down the throttle to stop the operation. the board started flashing yellow and motors kept rotating. Tried to disarm through Safety switch, but no success. Left YAW too did not disarm the motors. Disconnected the battery.
Now I am looking for the solution to this issue ASAP. Can anyone please help me out with this?
Thank you for your help