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# Circuit Diagram

The entire Circuit will be as below:

![](/files/-MRv1Z1IqB_aLwHgBUHa)

The 2 Left motors will connect to Motor A on the driver board

The 2 Right motors will connect to Motor B on the driver board

A 3 X 18650 battery pack **positive** will be connect to the **VSS / 12V** terminal on the driver board and the **negative** will be connected to the **GND** terminal on the driver board.

The Arduino board will be powered by the same 3 x 18650 battery pack. Connect a jumper from the **VSS / 12v** terminal on the motor board to the **VIN** on the Arduino board. Connect another jumper from the **GND** on the motor driver to **GND** on the Arduino board

The Motor driver will be connected to the Arduino board as per below connections:

* Motor driver ENA -> PIN 9 on Arduino Board
* Motor driver IN1 -> PIN 8 on Arduino Board
* Motor driver IN2 -> PIN 7 on Arduino Board
* Motor driver ENB -> PIN 3 on Arduino Board
* Motor driver IN3 -> PIN 5 on Arduino Board
* Motor driver IN4 -> PIN 4 on Arduino Board

The bluetooth module will be connected to the Arduino board as per below connections:

* Bluetooth VCC -> 5v on Arduino Board
* Bluetooth GND -> GND on Arduino Board
* Bluetooth TX > PIN RX on Arduino Board
* Bluetooth RX -> PIN TX on Arduino Board