A 12 second loop of a drone's electrical system drawn as connected blocks. Power flows from the battery through a connector to the power distribution board, then to the ESCs and motors, the flight controller and the payload camera. The propellers spin up. The remote controller's command link reaches the receiver, the GPS receives satellite signals, and the flight controller sends commands to the ESCs and data out through the telemetry radio back to the pilot. The labels name the five connected parts: power, control, navigation, telemetry and payload. Then one weak link fails, chosen with the buttons: a damaged battery connector makes the power flicker everywhere downstream, so the response is land and inspect; weak GPS or command link interference makes position or control uncertain, so the response is to fly conservatively. The still frame shows the whole system working, with all five labels.
