Why does my ESC keep beeping and fail to arm?

Question: Why does my ESC keep beeping and not arm?

Answer: Continuous beeping from an ESC usually indicates it is not receiving the correct arming signal or there's a safety issue. First, ensure your transmitter and receiver are properly bound and the throttle stick is at its lowest position. Then, power on the ESC with the throttle stick down to initiate the arming sequence. If it still beeps, check the throttle calibration: many ESCs require you to calibrate by powering on with throttle fully up, waiting for tones, then lowering throttle to minimum. Also, confirm your battery voltage is within the ESC's specified range and that the motor wires are correctly connected. Some ESCs beep if they detect a fault like overheating or low voltage, so inspect for damage or loose connections. Finally, consult your ESC’s manual for specific beep codes, as patterns often indicate particular errors. Following these steps should help your ESC arm correctly and stop beeping.