Manual Installation: The ELECFREAKS Ring:bit Car V2 micro car Kit is a small DIY smart car driven by the BBC micro:bit. Manual installation can better exercise a kid's hands-on ability. Ring:bit Expansion Port: The ELECFREAKS Ring:bit Car V2 micro car Kit extends the micro:bit’s 3 GPIO ports(3 pins), allowing different sensors and components to be easily attached to the micro:bit. Creativity: Rich makecode graphical programming blocks allow kids to learn programming from the simplest to more complex. They can achieve making a shape, crazy dance, remote control, etc. Optional Purchase: Ring:bit micro car Accessories (Sonar:bit, Tracking Module and LED Light bar). Your micro:bit Ring:bit micro car can achieve more functions like obstacle avoiding, line-following, and light show!