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 configuration issue. First, check your transmitter and receiver are bound properly and the throttle stick is at the lowest position. Many ESCs won’t arm if the throttle is not fully down. Next, ensure the ESC calibration matches your transmitter’s throttle range: to calibrate, disconnect the battery, hold the throttle at max, connect the battery, wait for the beeps, then lower the throttle to minimum until confirmation beeps sound. Also, verify that the battery voltage is within the ESC’s acceptable range and that the ESC is properly connected to the motor and flight controller. If your ESC has a programming card or software, check that the settings (such as brake, timing, or motor type) are correct. Finally, inspect for any faults like damaged wires or overheating. Following these steps usually resolves beeping and arming issues effectively.