Serial Bus Servo Driver HAT for Raspberry Pi (with ESP32)

This driver HAT has been made to control up to 253 serial bus servos simultaneously. It uses the ESP32-WROOM-32 module for wired and wireless communication, making it ideal for robotics projects such as quadruped robots, hexapod walkers, and robotic arms. It supports 9-25V wide voltage input and features multiple control demos. It connects to Raspberry Pi, providing power via a 5V buck regulator and communicates through the GPIO UART interface. The HAT also supports JSON command communication for advanced control and feedback. Features

* Allows controlling up to 253 ST / RSBL series serial bus servos at the same time

* 9~25V wide voltage input (the input voltage and the servo voltage must be matched)

* Based on the ESP32-WROOM-32 module, supports wired and wireless communication

* Provides multiple control demos for different host controllers

* Supports controlling the serial bus servos directly via onboard USB Type-C port

* Supports connecting to Raspberry Pi, powering the Pi via integrated 5V buck regulator circuit and communicating through GPIO UART interface, neat cable management

What's on Board

* ESP32 module

* DCDC 5V buck regulator

* UART control switch

* Reset button

* BOOT button For entering download mode

* Raspberry Pi 40PIN header

* ESP32 Type-C port

* Serial bus servo Type-C port

* XT60 connector

* 5.5×2.5 DC power jack

* Power supply screw terminal

* RS485 serial bus servo header

* TTL serial bus servo headers

Specifications

Controller ESP32-WROOM-32

Power Supply Port XT60 connector, 5.5 x 2.5 mm DC jack

Power Supply 9~25V (the input voltage and the servo voltage must be matched)

Communication Interface UART, 2x USB Type-C port

Wireless Communication 2.4G WiFi

Mounting Hole Diameter 3 mm

Mounting Hole Spacing 58 x 49 mm

PCB Size 65 x 57 mm

Connection Example - Raspberry Pi & Servo

Resources

* Product Wiki

* Schematics

Pinout

Package Contents

* 1x Bus Servo Driver HAT (A)

* 1x 2 x 20-pin header

* 1x USB-A to USB-C cable

* 1x Screws pack