micro:bit Tracking Car

Tracking Car for micro:bit
https://buberhu.blogspot.com/2018/12/microbit.html
https://buberhu.blogspot.com/2018/12/microbit_11.html

Layer height：0.1 mm
infill：100%

DC 3V-6V 1:120 TT Gear Motor
L9110S H Bridge Stepper Motor Dual DC Driver Controller Module
Expansion Board For BBC Micro: bit Development Module Contains Buzzer
Infrared Detection Tracking Sensor Module
Robot Chassis Universal Wheels
M2x6 Self Tapping Screw