Quantity   Component name
1 × ATTINY84A-MUR Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
1 × DRV8838A Motor Driver
3 × SS351AT Semiconductors and Integrated Circuits / Misc. Semiconductors and Integrated Circuits Hall effect Sensor
1 × LP2985A-33DSVR DC DC converter
1 × PS1240P02BT Audio Indicators
1 × 10k ohm register/1k ohm register/0.1uF capacitor/LED
1 × 0.5modules 8T pinion gear/42 super gear
2 × 2mmx2.5mmx5mm bearings