Why does my ESC keep beeping and fail to arm?

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

Answer: Continuous beeping from your ESC usually indicates it hasn't received the correct arming signal or there’s a configuration issue. First, ensure your transmitter and receiver are properly bound and the throttle stick is at the lowest position when powering up. Many ESCs require the throttle to be at zero for arming. Next, check your ESC calibration: disconnect the battery, power up the transmitter with throttle at max, then connect the battery to enter calibration mode. Follow the ESC's LED or beep signals to set throttle endpoints. Also, verify your ESC's firmware matches your motor type and that the battery voltage is within range. Lastly, inspect wiring for loose connections or shorts. If your ESC has a programming card or software, check settings like brake mode or timing, which might prevent arming. By following these steps, you should identify the cause of the beeping and get your ESC to arm properly.