Technical notes
Controller and driver connections
The schematic brings the controller, driver and power connections into a common view. The drawing identifies the boundary between the Arduino's control signals and the motor driver's connections.
Operator controls
A start program push button, power switch and potentiometer are visible in the circuit. These connect user actions to the electronic control arrangement instead of leaving them as separate assembly assumptions.
Schematic documentation
The package documents electrical intent and connection points. Its role is schematic definition and review, with the drawing serving as a reference for later hardware work.