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The product is intended for specialists and requires qualified and authorized personnel. The product does not include assembly/use instructions . Putting the product into operation by unqualified persons leads to the loss of the warranty according to the Terms and Conditions on the site.
The specified technical parameters (current, power, etc.) represent maximum allowable values under ideal operating conditions. For safe use and optimal lifespan, it is recommended to operate the product continuously at no more than 50% of the specified maximum values.
Servo Driver Board, Serial Bus Adapter (A), UART/USB, ST/SC series, Waveshare, 6-12V
Compact board for precise control of ST and SC serial servos in robotics projects, communicates easily with PC or microcontroller via USB Type-C or UART, allows simultaneous control of up to 253 servos on the same bus and real-time feedback reading such as angle, load, and voltage. Operates at 6-12.6 VDC and is powered directly through a 5.5x2.1 mm DC jack.
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This serial communication servo driver board is a complete and compact solution, ideal for robotics projects that require precise control of multiple servos simultaneously.
It accepts an input voltage between 6 and 12.6 VDC, which must correspond to the nominal voltage of the servos used.
Communication with the host (computer, Arduino, ESP32, STM32, or any microcontroller with a UART interface) is done via a single serial bus, through a USB Type-C connector or dedicated UART pins. Through this bus, the board can simultaneously control up to 253 serial servos from the ST and SC series, providing the possibility to read real-time information such as the current angle, load, and voltage of each servo.
The servos are powered directly from the source connected to the 5.5 x 2.1 mm DC jack, and a dedicated jumper allows selecting the desired control mode.
The 2.5 mm mounting holes and the compact dimensions of 42 x 33 mm facilitate integrating the board into any project or custom enclosure.
Specifications:
Input voltage: 9 – 12.6 VDC (must correspond to the servo voltage)
Communication interface: UART
Power connector: 5.5 x 2.1 mm DC jack
Maximum number of controllable servos: 253 (ST, SC series)
Compatibility: Arduino, ESP32, STM32, and any microcontroller with UART
Mounting hole diameter: 2.5 mm
Dimensions: 42 x 33 mm
Layout:
1. 5.5×2.1 DC power jack
2. Power terminals
3. USB Type-C connector
4. Jumper to select control mode
5. Servo control interface
6. UART communication interface
Control Mode:
| Jumper Position | Control Mode | Connector Used | Compatible Devices | Connection |
|---|---|---|---|---|
| A | UART | UART pins (RX, TX) | Arduino, ESP32, STM32, Raspberry Pi Zero, any MCU with UART | RX – RX, TX – TX, common GND |
| B | USB | USB Type-C | PC, Raspberry Pi 4B, Jetson Orin Nano, RDK X3, any host with USB | USB Type-C cable directly to host |
Attention: In UART mode (position A), the connection is made RX – RX and TX – TX (not crossed), according to official Waveshare documentation.
In mode A, the board connects to devices without USB (Arduino, ESP32, STM32, Raspberry Pi Zero) via UART pins, with the connection RX – RX and TX – TX. In mode B, the board connects via USB Type-C cable to devices with a USB port (PC, Raspberry Pi 4B, Jetson Orin Nano).
Usage:
1. Power the board from a source with the voltage corresponding to the servos used: 7.4 VDC for servos in the STS series (e.g., STS3215) or 9 – 12.6 VDC for servos in the ST series (e.g., ST3215).
2. Make sure the source can supply enough current for all servos connected on the bus.
3. Connect all serial servos in parallel to the 3-pin header (DATA, VCC, GND).
4. Select the desired control mode using the dedicated jumper on the board (position A for UART, position B for USB).
5. Connect the board to the microcontroller (Arduino, ESP32, STM32, etc.) via the UART interface or via the USB Type-C cable to the computer.
6. Upload the appropriate firmware or sketch and initiate serial communication with the servos using the standardized protocol commands.
7. Do not mix servos with different nominal voltages or servos from the ST and SC series on the same bus at the same time.
Official documentation: https://www.waveshare.com/wiki/Bus_Servo_Adapter_(A)
Dimension Diagram:
Documentation:
Produs destinat utilizarii in proiecte electronice, automatizari, prototipare, educatie si cercetare.
Produsul trebuie utilizat numai conform specificatiilor tehnice mentionate in descriere si/sau in documentatia produsului.
Avertismente generale de siguranta:
Nu utilizati produsul la tensiuni, curenti sau temperaturi peste valorile specificate.
Montajul si conectarea trebuie realizate de persoane cu cunostinte tehnice minime in domeniul electric/electronic.
Evitati scurtcircuitele, inversarea polaritatii si conectarea gresita a alimentarii.
Nu lasati produsul alimentat nesupravegheat in timpul testelor.
Produsul nu este jucarie si nu este destinat copiilor.
Pentru modulele electronice, se recomanda utilizarea in carcase, panouri sau montaje protejate, dupa caz.
Identificare produs:
Denumirea produsului, codul/SKU-ul si caracteristicile tehnice sunt mentionate in pagina produsului si/sau pe eticheta ambalajului.
Producator / Importator / Distribuitor:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Website: www.sigmanortec.ro
Persoana responsabila in UE:
Sigmanortec S.R.L.
Calea Bucuresti nr. 9, Targu Jiu, Gorj, Romania
E-mail: [email protected]
Documentatie si siguranta:
Pentru informatii suplimentare, fise tehnice, declaratii de conformitate sau instructiuni, ne puteti contacta la [email protected].
