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JUXI Bus Servo Driver Board

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Overview

The JUXI bus servo adapter is an all-in-one serial bus servo control solution designed for LeRobot SO-ARM100/101 robot arms and multi-servo robotics projects. It integrates servo power and control circuits on one compact board, eliminating complex wiring and separate power circuits.

Key features:

  • Single-bus control of up to 253 serial bus servos
  • 7-12.6V wide voltage input with integrated power (DC 5521)
  • Real-time feedback: position, speed, torque, operation mode
  • Type-C plug-and-play, compatible with Raspberry Pi / Jetson / RDK / PC
  • Precision-machined mounting holes — installs onto SO-ARM100/101 in 2 minutes
  • TVS protection (over-voltage / over-current)

Specifications

CategorySpec
Input VoltageDC 7V ~ 12.6V
InterfaceUSB Type-C / UART
Servo SupportUp to 253 serial bus servos
FeedbackPosition, speed, torque, operation mode
Board Size42.00mm × 33.00mm
Mounting Holes37.00mm × 28.00mm (matches SO-ARM)
Compatible ServosMost mainstream serial bus servos
Host PlatformsRaspberry Pi, NVIDIA Jetson (Nano/Orin/Xavier), RDK, PC, Orange Pi

Quick Start

3-Step SO-ARM Installation

  1. Align the driver board with the mounting holes on the SO-ARM 3D-printed base
  2. Secure with the included M2.5 screws
  3. Connect servo bus cable, power, and Type-C USB to the controller

Power Adapter Selection

AdapterUse Case
5V 6AStandard bus servo projects, SO-ARM arms (7V standard servos)
12V 5AHigh-torque servo projects, multi-servo robots (12V)

Supported Platforms

  • ✅ LeRobot SO-ARM100/101 development
  • ✅ LeKiwi robot arm development
  • ✅ Multi-joint robots (quadruped/hexapod, humanoid)
  • ✅ Embodied AI training & closed-loop control
  • ✅ Educational robotics
  • ✅ Custom servo-driven robot prototypes

FAQ

Q: Which servos are supported?

A: Almost all mainstream serial bus servos (Feetech SCS/STS series, etc.).

Q: Do I need separate drivers?

A: No. Type-C connects to the host with plug-and-play servo control and data feedback.

Q: What is TVS protection for?

A: Prevents voltage spikes from damaging the board and servos, ensuring stable operation in complex environments.

Q: Which power adapter?

A: 5V 6A for standard servos, 12V 5A for high-torque servos.


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