Waveshare AlphaBot 2 - AlphaBot2-Pi Adapter Board; Core Interfaces and Connectivity; Key Components and Features

AlphaBot 2 User Manual
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AlphaBot2-Pi
1. AlphaBot2 control interface: for connecting AlphaBot2-Base
2. Raspberry Pi interface: for connecting Raspberry Pi 3 Model B
3. Servo interface
4. USB TO UART: easy for controlling the Pi via UART
5. LM2596: 5V voltage regulator
6. TLC1543: 10-bit AD acquisition chip, allows the Pi to use analog sensors
7. PCA9685: servo controller, make it more smoothly to rotate the pan head
8. CP2102: USB TO UART converter
9. Joystick
10. IR receiver
11. Buzzer