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 is a setup issue. First, check your transmitter and receiver are bound properly and the throttle stick is at the lowest position. ESCs often won't arm if the throttle isn't fully down. Next, verify the ESC calibration: power up the ESC with the throttle at maximum, wait for the tones, then lower the throttle to minimum. This ensures the ESC recognises your throttle range. Also, confirm the battery voltage is sufficient; low voltage can cause beeping. Inspect all wiring for secure connections and correct polarity. If your ESC has a programming mode, consult its manual to understand the beeping pattern—it might signal an error like motor detection failure or temperature warning. Lastly, ensure the firmware and settings match your motor type and battery. Following these steps should help your ESC arm properly and stop beeping.