Ring:bit car is a DIY smart car has extended 3 channels of GPIO, among which 2 channels are used for driving servos and one channel of GPIO is undefined. Many sample code provided.
*Micro:bit not included.
*Some assembly required.
Document
Relative Readings:
Ring:bit Car Kit Case 01: Add Package
Ring:bit Car Kit Case 02: S Walk
Ring:bit Car Kit Case 03: Draw a Circle
Ring:bit Car Kit Case 04: Wireless Remote Control