The Bus Servo Adapter (A) is a compact driver board that integrates power supply and control circuitry for ST/SC series serial bus servos. It supports controlling up to 253 servos simultaneously over a single UART channel, with position, speed, torque, and operating mode feedback from each servo.

The board offers both USB and UART control modes, selectable via an onboard jumper. USB mode allows direct connection to a PC, Raspberry Pi, or Jetson for quick prototyping, while UART mode enables integration with Arduino, ESP32, STM32, and other microcontroller platforms.

Key Features

• Up to 253 Servos – Control multiple ST/SC series bus servos on one UART channel
• Dual Control Modes – USB or UART, selectable via jumper
• Integrated Power Circuit – Powers servos directly via DC jack or screw terminal
• Servo Feedback – Position, speed, torque lock, and operating mode data
• Compact Form Factor – Suitable for space-limited projects
• Multi-Platform SDK – Compatible with Raspberry Pi, Jetson, ESP32, Arduino, STM32

Specifications

• Input Voltage – 9–12.6V DC (must match servo voltage requirements)
• Power Input – DC 5.5×2.1mm jack or screw terminal
• USB – USB Type-C connector
• Control Interface – UART or USB (jumper selectable)
• Compatible Servos – ST and SC series serial bus servos

Ideal For

• Quadruped and hexapod robots
• Robotic arms and grippers
• Multi-servo projects requiring closed-loop control
• Rapid servo prototyping via USB

Package Contents

• 1× Bus Servo Adapter (A)

Resources

• Waveshare Wiki