Robotics & Arduino
Lesson 2 · Refinement

The servo · Reverse the connections

Four switches. Two directions.

Click the switches. Follow the current.

H-bridge: switches 1 and 2 connect battery positive to motor terminals A and B. Switches 3 and 4 connect those same terminals to battery negative.

Open circuit — no sustained current through the motor.

Flow markers show conventional current (+ → −).

Control the switches.
Control the direction.