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[Serial Port Assistant] Hexadecimal Command to Control Servo

1. Instructions for Use

  • Use a serial port assistant to simulate various embedded platforms to send hexadecimal commands for servo control and data reading back.
  • Provide examples of various hexadecimal control commands to facilitate system debugging.
  • When the host computer cannot be installed correctly, use this method to test the basic functions of the servo.

2. Wiring Preparation

  • Click to download (Serial Port Assistant + Command Generation Tool).
  • Please connect the bus servo – USB/TTL module – computer in sequence according to the following diagram, and then connect the power supply.

串口助手连接示意图

[!NOTE]

  • The corresponding driver needs to be installed in advance. Download address for CH340G driver.
  • Ensure that the voltage of the power supply used is within 6.0-8.4v (9.0-12.6v); otherwise, the servo will enter voltage protection and fail to work.
  • Ordinary AA battery packs are not applicable. It is recommended to use a regulated power supply or a 2s (3s) lithium battery pack.
  • Some regulated power supplies take a long time to power on, which may easily trigger low-voltage protection. It is recommended to turn on the power first and then connect the servo.
  • The factory ID of all servos is set to #0, so please connect only one servo at a time for debugging. After the ID is modified, multiple servos can be connected simultaneously.
  • Serial port connection sequence: TX-RX, RX-TX, GND-GND, which is also applicable to the serial ports of microcontrollers such as Arduino and STM32.

3. Common Hexadecimal Command Examples

  • Command Generation Tool

    By entering the corresponding content in the attached table, you can obtain hexadecimal command examples for the Single-Turn Position Control (Basic) and Multi-Turn Position Control (Basic).

16hex_tool

[!NOTE]

The yellow parts are the input sections. For example, servo ID 0, angle 90°, time 1s, power 0 (unrestricted).
The corresponding command after generation is:12 4C 08 07 00 84 03 E8 03 00 00 DF (Servo 0 moves to 90° within 1s)

  • For detailed command meanings and examples, please refer to the protocols.

4. Use of Serial Port Assistant

As shown in the figure, the operation steps for using the serial port assistant are as follows:

SSCOM

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