Quantity   Component name
1 × Adafruit Trinket Pro 5V The Brains - adafruit.com/products/2000
1 × MMA 8451 Triple-Axis Accelerometer For balancing - adafruit.com/products/2019
1 × Dual H-Bridge For controlling the motors - adafruit.com/products/807
2 × DC Motor adafruit.com/products/711