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 a problem with the arming process. First, check your throttle stick is at the lowest position; ESCs often won’t arm if the throttle isn’t fully down. Next, ensure your transmitter and receiver are properly bound and that the throttle channel is responding correctly. If your ESC has a calibration mode, recalibrate it by following the manufacturer’s instructions—this usually involves powering up the ESC with the throttle at max, then lowering it once it beeps. Also, verify the battery voltage is adequate; low voltage can prevent arming. Inspect all wiring and connectors for secure, clean connections. Lastly, confirm any safety switches or arming sequences required by your ESC or flight controller are correctly followed. By systematically checking these steps, you can identify and resolve the cause of the beeping and get your ESC to arm properly.