MirrorBallBot
This is ball-balancing robot, I designed from scratch.
Apart for the mirror trick, the robot has another key innovation: The ball following, in real time, the movement of the finger to the touchscreen.
The system is based on Raspberry Pi components: Raspberry Pi 4B+ as main controller, PiCamera V3 wide, and three RP2040-Zero to control the three TMC2209 (silent) stepper drivers.
The Raspberry Pi 4B+ communicate with the the three RP2040-Zero via a custom I2C protocol.
The system processes more than 110 FPS, and control the platform at 17~25Hz.
The 7-inch touchscreen display, with related GUI, make the robot quite enjoyable.
The project is completed by an extensive documentation pdf file (ca 130 pages), covering several aspects: BOM, 3D printing, PCB assembly, wood base preparation, Raspberry Pi and RP2040 setup, first tests, full assembly (27 steps with photos), GUI operation, PID tuning, I2C protocol details, configuration parameters, troubleshooting, and Q&A.
MirrorBallBot
*PCBWay community is a sharing platform. We are not responsible for any design issues and parameter issues (board thickness, surface finish, etc.) you choose.
Raspberry Pi 5 7 Inch Touch Screen IPS 1024x600 HD LCD HDMI-compatible Display for RPI 4B 3B+ OPI 5 AIDA64 PC Secondary Screen（Without Speaker）
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