Wave Raspberry Pi Serial Bus Servo Driver HAT

The Wave Raspberry Pi Serial Bus Servo Driver HAT is a powerful control board designed for serial bus servos, integrating an ESP32 and dedicated servo control circuits. It features onboard RS485 and TTL serial bus interfaces, allowing seamless communication with ST and RSBL series servos. With support for up to 253 servos simultaneously, this HAT is ideal for robotics applications requiring precise multi-servo coordination.



Users can connect via USB and send JSON-formatted commands to control servo parameters such as torque, speed, and position while receiving real-time feedback. The board supports both wired and wireless communication via UART, USB, and 2.4GHz WiFi. Additionally, it allows integration with a Raspberry Pi, providing power through an onboard 5V buck regulator and ensuring clean cable management.

Quick Spec

• Controller: ESP32-WROOM-32
• Servo Compatibility: ST/RSBL series serial bus servos
• Maximum Servos: 253 servos
• Power Supply: 9~25V (must match servo voltage)
• Power Input Ports: XT60 connector, 5.5×2.5 mm DC jack
• Communication Interfaces: UART, RS485, USB Type-C ×2
• Wireless Communication: 2.4GHz WiFi
• Integrated 5V Buck Regulator: Powers Raspberry Pi when connected
• Software Support: JSON-based command interface, control demos for various host controllers
• Mounting Hole Diameter: 3mm
• Mounting Hole Spacing: 58 × 49mm
• Board Dimensions: 65 × 57mm

Dimensions

Pinout

Board Layout

1. ESP32 module
2. DCDC 5V buck regulator
3. UART control switch
4. Reset button
5. BOOT button: for entering downloading mode
6. Raspberry Pi 40PIN header
7. ESP32 Type-C port
8. Serial bus servo Type-C port
9. XT60 connector
10. 5.5×2.5 DC power jack
11. Power supply screw terminal
12. RS485 serial bus servo header
13. TTL serial bus servo headers

Resources

• Product Page
• Product Wiki
• Schematic
• Servo Driver Libraries & Demo Code

Shipping List

• 1 x Wave Raspberry Pi Serial Bus Servo Driver HAT
• 1 x 2×20 DIL Female Header
• 1 x USB-A to USB-C cable
• 1 x Screws pack