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Two small green circuit boards with DC power jack and screw terminals

MCDODO

MCDODO Serial Bus Servo Driver Board 2PCS 253 Servos DC5521

SKU CH-06EA-0ESB4

Two driver boards integrate power and control for ST/SC serial bus servos, supporting up to 253 units with UART or USB command modes

  • Product typeSingle Board Computers
  • Controls up to 253 ST/SC servos simultaneously
  • Integrates power supply and control circuitry on one board
  • Dual power input via DC5521 jack or screw terminal
  • Switchable UART or USB control modes with jumper
  • Includes SDK and online tutorial for rapid prototyping

Dual Serial Bus Servo Driver Boards

This pack supplies two driver boards that merge power delivery and control circuitry for ST/SC series serial bus servos. Each board targets makers and robotics developers who need to drive many servos from a single host without designing custom power distribution. The integrated design reduces wiring and simplifies prototyping for articulated projects.

253 Servo Capacity and Power Options

A single board can address up to 253 ST/SC series servos simultaneously over the serial bus. Power enters through an onboard DC5521 jack or a screw terminal, letting you match the supply to the servo voltage requirements. The bus returns status and feedback from every connected servo, so the host can monitor position, load and error data in real time.

UART and USB Control Limits

Control mode is selected by a jumper: position A enables direct UART communication, while position B routes commands over USB for rapid host connection. The UART path suits embedded controllers and custom firmware; the USB path accelerates PC-based prototyping with the provided SDK. Both interfaces share the same 253-servo address space, so the practical limit is the bus addressing scheme, not the host link.

How it compares

Measured against everything we stock in Single-Board Computers & Dev Kits, at today’s prices. Recalculated every night.

Price $33.99
Cheaper than about 65% of the 1,420 comparable items (median $44.99).

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Specifications

Product
Product typeSingle Board Computers

Questions about this item

Will this driver board control my existing ST-series servos alongside new SC-series units on the same bus?

Yes, each board supports up to 253 ST/SC series serial bus servos simultaneously, mixing both families on one UART bus.

How can I verify the board is communicating correctly after wiring the DC5521 jack and USB link?

Connect via USB, open the serial monitor, and confirm each servo returns its ID, position, and status packets through the SDK.

Does the package include the USB cable and DC power adapter, or must I source them separately?

The listing covers two driver boards only; USB cables and DC5521 power supplies are not included and must be purchased separately.

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