Overview
This Serial Bus Servo Controller (Hiwonder) is a compact controller and communication/debugging board for Hiwonder serial bus servos, supporting PC software control, manual button programming, and TTL serial port communication for secondary development. It can also work with a PS2 wireless handle receiver for remote servo control (about 10 m).
Note: When using 11.1V serial bus servos (e.g., LX-224HV, 824HV), use an 11.1V lithium battery to power the servo.
Key Features
- Graphical PC software; supports online debugging
- High-performance STM32 CPU (ARM Cortex-M3 core); high-precision motion control with adjustable speed
- Manual button programming to set servo angle without a host computer
- PS2 handle interface; remote control distance about 10 m
- 10 bus servo connection ports; supports a total of 40 servo movements; servos can be connected in series
- 16M memory: can include 230 action groups; each action group contains 510 actions
- Low-voltage alarm: buzzer sounds when positive voltage is lower than 5.6 V
- Built-in power switch
- Computer driver-free operation; automatic connection supported by PC software
- Supports reading servo angle
- External MP3 module / Bluetooth module port
- Reserved serial communication interface for TTL serial communication with other development boards; Arduino, Raspberry Pi, and Jetson Nano communication routines are provided
- Compatibility note: controller supports Hiwonder brand bus servos
On-board Interfaces and Indicators
- Micro USB port
- Secondary development serial communication port
- PS2 handle receiver port
- MP3 module / Bluetooth module port
- Servo ports (servo port pins labeled: Positive pole, Negative pole, Signal)
- Power terminals: VCC+ and VCC-
- LED1: Power indicator; LED2: Communication indicator
- Manual programming button; Low voltage alarm; Power switch
Specifications
| Product dimension | 58*42mm (2.28*1.65inch) |
| Additional marked dimensions | 49mm (1.93inch); 34mm (1.34inch) |
| Product weight | 21g |
| Communication baud rate | 9600 |
| Maximum controlling quantity | 40 servos |
| Storage | 16M |
| PC software control | Support |
| Manual button programming | Support |
| PS2 handle | Support |
| Secondary development | Support |
| Low-voltage alarm | Support |
| Built-in switch | Support |
| Computer driver-free | Support |
| Read servo angle | Support |
| External MP3/Bluetooth module | Support |
PC Software Interface
- Bus Servo Control (V3.2.2) interface shown
- Connection status display
- Action group action buttons
- Servo slider control
The provided PC software supports online debugging, driver-free operation, automatic connection, and language switching. Servos can be debugged without coding by using slider control for rotation.
Applications
- Serial bus servo control and motion/action group playback
- Robotics projects requiring PS2 handle remote control
- TTL serial communication integration with Arduino, Raspberry Pi, and Jetson Nano
Details

Graphical PC software plus on-board controls make it easy to test, program, and debug Hiwonder bus servos from a compact controller board.

Clearly marked ports help speed up wiring for PC control, secondary development over TTL serial, and optional PS2 handle input.

Use the STM32-based controller for responsive servo control, quick angle setting via buttons, and PS2 receiver connectivity when needed.

Built-in memory stores action groups, while the low-voltage alarm helps protect projects when power drops during motion.

A convenient on-board switch simplifies power control, and the reserved header supports optional MP3 or Bluetooth add-ons.

Connect by Micro USB for driver-free software control, or use the TTL serial interface to link with Arduino, Raspberry Pi, or Jetson Nano.

Compact 58×42 mm size fits neatly into robotics builds while keeping ports accessible for wiring and mounting.

PC software provides online debugging with connection status, action groups, and slider-based angle control for each servo ID.

A typical setup powers the board from a battery, connects servos to the bus ports, and optionally adds a wireless PS2 receiver for remote control.


