Hiwonder BusLinker V3.0 Servo Debugging & Driver Board BusLinker V3.0 is a compact debugging and communication board for Hiwonder magnetic encoder intelligent serial bus servos. It connects compatible bus servos to ServoStudio PC software or an external controller through USB, UART or single-wire TTL, making it suitable for robot arms, multi-DOF mechanisms, LeRobot projects and embedded motion-control development. Key Capabilities Hiwonder magnetic encoder bus servo support: compatible with PH2.0, 5264 and 1.25T bus-servo interfaces. USB, UART and single-wire TTL: choose the communication method that fits your PC or embedded-controller workflow. Up to 1,000,000 bps: eight configurable baud-rate levels support different communication requirements. ServoStudio PC workflow: scan servos, inspect feedback, configure parameters, switch supported motion modes and test motion. Broad controller support: designed for development with Jetson, Raspberry Pi, ESP32, STM32, Arduino and other compatible controllers. Expansion-ready bus system: a single bus is specified to handle up to 253 Hiwonder servos when the system power arrangement is appropriate. Servo Connection & Power The board provides 5264, PH2.0 and 1.25T bus-servo ports for compatible Hiwonder magnetic encoder servos. It accepts 5–14V input through either the DC input or terminal block. Use a power source sized for the connected servo load, observe terminal polarity and treat the PC data cable as a communication connection rather than the sole power source for a high-load servo system. Interface & Integration Notes Use the onboard communication-selection interface to switch the required mode. The Type-C port connects to PC software or a controller, while the serial pins support external microcontroller communication. The DC input uses a 5.5 × 2.1mm connector. The official wiring and platform examples show servos, batteries and host boards as external system components; they are not represented as included with this board. ServoStudio PC Debugging With ServoStudio, you can scan compatible servo IDs, view device status, adjust supported parameters, monitor live data and issue motion commands. The documentation describes Position, Velocity (closed-loop) and PWM (open-loop) modes for compatible magnetic encoder servos; available functions depend on the servo model and firmware. Embedded Development BusLinker V3.0 is intended to bridge compatible bus servos with a host platform through serial communication. Hiwonder provides development examples for Raspberry Pi, Jetson, ESP32 and STM32, alongside Arduino-oriented workflows. Keep the servo power path separate from the host controller's logic-power requirements, share the required communication reference and verify voltage compatibility before connecting any ports. Specifications Compatible servo type Hiwonder magnetic encoder intelligent serial bus servos Bus-servo interfaces 5264, PH2.0 and 1.25T Communication modes USB serial, UART and single-wire TTL Maximum baud rate 1,000,000 bps Baud-rate settings 8 configurable levels Input voltage 5–14V DC Power inputs 1 × DC connector and 1 × terminal block DC connector 5.5 × 2.1mm Indicators 3 × LED Size 42 × 33 × 15mm Mounting-hole spacing 36 × 28mm Weight 10g What Is Included The official packing illustration shows the BusLinker V3.0 board, a USB-A to Type-C cable and mounting accessories. Servos, batteries, power adapters and external host controllers shown in wiring examples are separate project components. Documentation For the compatible software, wiring procedure, platform examples and protocol-specific setup, use the BusLinker V3.0 documentation. FAQ Which servos work with BusLinker V3.0? It is designed for Hiwonder magnetic encoder intelligent serial bus servos using PH2.0, 5264 or 1.25T interfaces. It is not a general-purpose controller for ordinary three-wire PWM hobby servos. How many servos can one BusLinker bus handle? Hiwonder specifies up to 253 compatible servos on one bus. For multi-servo systems, provide an appropriate separate power arrangement for the actual servo load. Can I use it with a Raspberry Pi, Jetson, Arduino or ESP32? Yes. The board supports serial communication and Hiwonder provides development examples for those platforms. Select the required communication mode and verify the host-side wiring before use. Can I power the board from USB alone? Use the 5–14V DC or terminal input for the servo power system. The Type-C connection is used for PC or controller communication; size the external power source for the voltage and current requirements of the connected servos. Are the battery and servos in the wiring diagram included? No. They are example external components used to show a complete servo system. The packing illustration shows the board, a USB-A to Type-C cable and mounting accessories.
