Example Project: Raspberry Pi Robot with the A-Star 32U4 Robot Controller
This is an expandable robot platform based on a Raspberry Pi and an A-Star 32U4 Robot Controller. With this platform, the powerful Raspberry Pi can take care of high-level tasks like motion planning, video processing, and network communication, while the A-Star, which mounts to the Pi’s GPIO header, takes care of actuator control, sensor inputs, and other low-level tasks that the Pi is incapable of. The total cost of the parts I used is about $120.
Step-by-step tutorial: https://www.pololu.com/blog/577/build...
A-Star 32U4 Robot Controller SV: https://www.pololu.com/product/3119
Raspberry Pi Model A+: https://www.pololu.com/product/2758