# TTL/USB Module, BusLinker V2.4, for serial servomotors

- Page: https://sigmanortec.ro/en/ttl-usb-module-buslinker-v24-for-serial-servomotors
- Price: 51.16 RON
- Availability: In stock; 1-2 zile
- Reference: 88280 · EAN: 5941824151552
- Category: Mechatronics and IoT > Serial and CAN Converters
- Specifications: Model: BusLinker V2.4; Communication interface: USB / TTL
- Package (shipping data): 0.033 kg
- Updated: 2026-09-14
- Shop: [Sigmanortec.ro](https://sigmanortec.ro/en/llms.txt)
- Prices: RON, VAT included; prices and stock as of 2026-10-22 05:45 (Europe/Bucharest)

## Description

The essential TTL-USB interface for controlling LewanSoul serial bus servomotors, the only debug board compatible with their protocol, allows quick connection to a PC via microUSB for settings and real-time angle reading, offers direct connection to TX RX for Arduino STM32 ESP32, has 6-8.4V power supply via screw terminal and dedicated servo connectors, compact and reliable with CH340C.
BusLinker V2.4 is a TTL/USB interfacing module dedicated to the control of serial bus type servomotors, specially designed for the LX-16A, LX-15D, LX-824, LX-224, LX-824HV, LX-224HV, LX-1501, LX-225, LX-20S, and LX-246 series. These servomotors use a proprietary serial protocol, and BusLinker V2.4 is the only compatible debug board type that enables proper communication with them. Without this module, controlling serial bus type servomotors is not possible.
The module is compatible with Arduino, STM32, ESP32, and any other platform with a TTL serial interface, offering maximum flexibility in robotics and automation projects.
Key features include: the ability to connect to PC software to adjust servomotor parameters, real-time reading of the servomotor's current angle, direct connection to the TXD and RXD pins of a microcontroller for full control, integrated mini-B USB port for quick PC connection, power interface via screw terminal block (6-8.4V), two servo interface channels with Signal/+/– pins, serial port with accessible 5V/TX/RX/GND pins, and a compact design on a white PCB with quality components (74HC1240, CH340C).
Only one BusLinker module is sufficient regardless of the number of servomotors controlled, making it an economical and efficient solution for any bus servomotor application. The board physically has 4 servo connectors, grouped into 2 categories of connectors depending on the servo used.
Specifications:
Power supply voltage: 6 - 8.4V
USB Interface: MicroUSB
USB-Serial Chip: CH340C
Logic Chip: 74HC1240
Number of servo connectors: 4 connectors
Accessible serial pins: 5V, TX, RX, GND
Servomotor compatibility: LX-16A, LX-15D, LX-824, LX-224, LX-824HV, LX-224HV, LX-1501, LX-225, LX-20S, LX-246
Microcontroller compatibility: Arduino, STM32, ESP32, any TTL serial platform
Operating mode: Servo or Gear Motor
Filter capacitor: 100uF 16V
Dimensions mm: 24 x 40mm
Pinout:
Pin
Function
5V
5V Power Supply
TX
Data Transmission
RX
Data Reception
GND
Ground
Signal
Servo signal
+ (servo)
Servo VCC
- (servo)
Servo Ground
+ (terminal)
Power supply +
- (terminal)
Power supply -
Usage:
Connect the BusLinker module to the power supply (6-8.4V) through the screw terminal block, respecting the polarity (+ and -).
Connect the serial bus servomotor to the Servo interface (Signal, +, -) using the original servomotor cable.
For PC control: connect the module to the computer via a mini-B USB cable and install the CH340C driver if it is not installed automatically.
Open the dedicated BusLinker software on the PC to adjust the servomotor parameters or to read the current angle.
For control with a microcontroller (Arduino/STM32/ESP32): connect the module’s TX and RX pins to the microcontroller’s RX and TX pins respectively, and a common GND.
Use the dedicated LewanSoul/Hiwonder library in the microcontroller code to send commands via the proprietary serial protocol of the bus servomotors.
Always check the power supply voltage before connecting the servomotor to avoid damaging it.