Why does my ESC keep beeping and refuse 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 safety issue. First, check your transmitter and receiver are bound and powered on properly. Ensure the throttle stick is at the lowest position, as most ESCs won’t arm if throttle isn’t fully down. Next, verify all motor connections are secure and the ESC is properly calibrated. To calibrate, disconnect the battery, power on the transmitter with throttle at max, reconnect the battery to the ESC, wait for beeps, then move throttle to minimum until confirmation beeps sound. Also, check for any error codes in the ESC manual—common issues include voltage cut-off or temperature warnings. Finally, ensure your battery voltage matches ESC specifications and that your ESC firmware is up to date. Following these steps methodically will usually resolve beeping and arming issues.