Quantity   Component name
1 × Arduino Nano R3 Develoment board & microcontroller that can be plugged into breadboard; this runs the control script that balances the robot.
2 × NEMA 17 Stepper Motor Bipolar stepper motor and has a 1.8° step angle (200 steps/revolution). Each of the robot wheels will be powered independently by these motors.
2 × A4988 Stepper Motor Driver (in breakout-board) The drivers used to control the stepper motors; one per motor.
1 × MPU-6050 6 Axis Gyro + Accelerometer (in breakout-board) The robot's sensor that is used to report the tilt angle.
1 × HC-06 Bluetooth Serial Pass-through Module Used to communicate with Android smartphone.
1 × 2200mAh 11.4V LiPo Battery The robot's power source.
1 × 600x300x5mm Acrylic Sheet The robot chassis is laser cut from this material.
1 × Breadboard (63 Row) Prototyping breadboard to be used with jumper wires; a larger board is more forgiving when building the circuit.
1 × Set of Jumper wires Typical set jumper wires; different lengths required, different colours is helpful.