The UART Transparent Transmission feature allows your PC software (such as FD Servo Debugger) to communicate directly with servos through the driver board — just like connecting them to a regular USB-to-UART adapter.
This mode is designed for quick debugging, servo tuning, and firmware updating.
Power on the driver board and toggle the power switch to ON.
Use a USB cable to connect your computer to the board’s UART interface.
Launch the FD software on your computer.
Set the baud rate to 1,000,000 (1M).
The driver board’s UART0 always runs at 1M baud in transparent mode, regardless of the servo’s own baud rate.
If your servo uses a baud rate other than 1M, you can change the communication speed between the driver board and the servos using one of the following methods:
You can easily switch the servo baud rate from the top toolbar in the Web Application interface.
Alternatively, you can send a command via Wi-Fi (HTTP/WebSocket) or USB CDC to set the communication baud rate.
For example, the following command sets it to 500,000 bps:
{"T":10,"baud":500000}