Brushless Esc V2.3 Manual -

Every time you power on normally (with the throttle at the bottom), the ESC performs a self-test: USER MANUAL - HOBBYWING

Instead of cutting the power instantly (which crashes drones), the v2.3 reduced the power to the motors to warn Alex. He saw the wobble, realized the battery was low, and landed gently. brushless esc v2.3 manual

He looked at the troubleshooting section of the manual. The v2.3 had a "Fail-Safe" feature. "If the signal is lost, or the throttle stick is not at absolute zero during startup, the ESC will not arm." Every time you power on normally (with the