Hiwonder UNO Expansion Board Compatible with Arduino, Supports Motor and Servo Control, Bluetooth Communication, and Sensor Integration, Ideal for Robotic Arm and Robot Car
- 【Compatible with Arduino】Features a standardized interface and unified communication protocol. The Arduino UNO controller can be directly connected to the expansion board without additional wiring.
- 【High-Performance 32-Bit CPU】Equipped with a high-performance 32-bit CPU that supports closed-loop control and current protection, ensuring precise servo control, encoder motor management, and stable voltage regulation.
- 【Comprehensive Peripheral Ports】Includes onboard serial bus servo ports, PWM servo ports, 4-channel encoder motor ports, a Bluetooth communication port, and an I2C expansion port, enabling versatile development and support for various application scenarios.
Full Compatibility with Arduino UNO
The Arduino UNO uses a unified communication protocol and supports the Arduino development environment along with related libraries. The expansion board connects seamlessly to the UNO microcontroller without the need for additional wiring. Available in Model A, Model B, and Model C.
High-Performance 32-Bit CPU
The on-board high-performance 32-bit chip enables closed-loop control and current protection, ensuring precise control of servos, encoder motors, and voltage monitoring. This feature is available exclusively in Model B.
Support DC/ Encoder Motor
The expansion board can drive 4-channel DC motors and 2-channel encoder motors, meeting the interface requirements of most vehicle models on the market, including 2WD, 4WD differential, Mecanum-wheel, omnidirectional wheel, steering, and Ackerman drive systems.
Supports PWM and Serial Bus Servos
The expansion board features both PWM and serial bus servo interfaces, making it easy to implement 6DOF robotic arms and other joint-based robotic systems. Models A and B support both PWM and serial bus servos, while Model C supports only PWM servos.
Supports Bluetooth Communication
The expansion board is compatible with the Hiwonder Bluetooth 4.0 module, allowing you to control the robot via the app, wireless glove, or synchronized controller. This feature is supported only by Model A and Model B.
Multiple Peripheral Interfaces
Includes 4-channel encoder motor port, serial bus servo port, bluetooth port, PWM servo port, and more, enabling flexible control of multiple peripherals.
| Product Specification | |||
| Model |
UNO Expansion Board Model A
|
UNO Expansion Board Model B
|
UNO Expansion Board Model C
|
| Power supply port | DC port | Terminal port | DC port |
| Main control chip | / | High-performance MM32 chip | / |
| Application | miniAuto | Ackerman chassis | Spiderbot and LeArm secondary development kit |
| Power input | 6-12.6V | ||
| Motor control | 4-channel DC motor port | 2-channel encoder motor port | / |
| Serial bus servo port | 2-channel | / | |
| PWM servo port | 2-channel | 4-channel | 2-channel |
| I2C port | 4-channel | ||
| 4PIN GPIO port | / | 11-channel | |
| Bluetooth module port | 1 | / | |
| RGB light | 1 | / | |
| Buzzer | 1, For user customization | / | |
| Independent switch | 1 | / | |
| Programmable customization button | 1, For user customization | / | |
| Hole spacing | 69*53mm/ 69*48mm | ||
| Board weight | 28g | ||
| Board layer | Industrial 2 layer-board | ||
| Item | Specification | |||
| Model | UNO Expansion Board Model A |
UNO Expansion Board Model B |
UNO Expansion Board Model C |
|
| Application | miniAuto | Ackerman chassis | Spiderbot and LeArm secondary development kit | |
| Power supply port | DC port | Terminal port | DC port | |
| Main control chip | / | High-performance MM32 chip | / | |
| Power input | 6-12.6V | |||
| Motor control | 4-channel DC motor port | 2-channel encoder motor port | / | |
| Serial bus servo port | 2-channel | / | ||
| PWM servo port | 2-channel | 4-channel | 2-channel | |
| I2C port | 4-channel | |||
| 4PIN GPIO port | / | 11-channel | ||
| Bluetooth module port | 1 | / | ||
| RGB light | 1 | / | ||
| Buzzer | 1, For user customization | / | ||
| Independent switch | 1 | / | ||
| Programmable customization button | 1, For user customization | / | ||
| Hole spacing | 69*53mm/ 69*48mm | |||
| Board weight | 28g | |||
| Board layer | Industrial 2 layer-board | |||
Shipping & Delivery
1. Free Shipping Policy
Hiwonder offers free standard shipping on orders over US $499 (before tax and duties), delivered via trusted carriers such as DHL, UPS, or FedEx.
Most orders arrive within 6 working days after dispatch. You can check if your country is eligible for free shipping in the regions listed below.
Eligible Regions
- Americas: United States, Canada, Mexico, Chile
- Europe: Germany, United Kingdom, Netherlands, Switzerland, France, Austria, Italy, Belgium, Spain, Sweden, Finland, Norway, Portugal, Czech Republic, Poland, Greece, Slovenia, Romania, Denmark, Bulgaria, Luxembourg, Slovakia, Hungary, Ireland, Estonia, Lithuania
- Asia: China, Japan, Singapore, South Korea, United Arab Emirates, Malaysia, Thailand, Philippines, Indonesia
- Oceania: Australia, New Zealand
If your country or region is not listed above, the shipping cost will be automatically calculated at checkout once you enter your shipping address.
2. Customs & Import Fees
All international shipments are subject to local customs regulations. Import duties, taxes, or other fees may be charged by your country's customs authority upon arrival.
Our shipping term is FOB Shenzhen, which means these fees, if any, are the customer's responsibility. The shipping carriers will assist with the customs clearance process to ensure smooth delivery.
If a package is returned due to unpaid customs duties, any related return or reshipping fees will be deducted from your refund.
3. Order Processing Time
Orders are typically processed within 24 hours after placement and shipped the next business day.
Orders placed on weekends or public holidays will be shipped on the next working day.
Once shipped, you will receive a confirmation email with tracking information.
Questions & Answers
Have a Question?
-
can this controller work with the hiwonder hx-12h servo?
Hi there! Yes. The Hiwonder UNO Expansion Board Model A and Model B can work with the HX-12H serial bus servo, as they both include 2-channel serial bus servo ports specifically for Hiwonder serial bus servos. Model C, however, only supports PWM servos and does not include serial bus servo ports.
For the HX-12H, here are a few things to note:
✅ Communication: The HX-12H uses Hiwonder's TTL serial bus protocol, which is supported by the serial bus ports on the UNO Expansion Board.
✅ Power: The expansion board accepts 6–12.6 V input, which is suitable for powering the board and HX-12H servos. Use a power supply capable of delivering sufficient current if you're driving multiple servos.
✅ Programming: You can control the servos from an Arduino UNO through the expansion board using Hiwonder's serial bus servo library/protocol.
If you're planning to use multiple HX-12H servos, I recommend Model B because it has an onboard 32-bit MCU that provides closed-loop control and current protection, making it more robust for robotic arm or legged robot applications.
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Will the Model C replace the controller board on my xArm hiwonder robotic arm or is it an add on module? What other hardware do I need to control my xArm 1S using the Arduino IDE?
Hi there, Model C is for Hiwonder Raspberrt Pi kit. There are two upgrade kits for your xArm 1S:
Upgrade to Arduino kit: https://www.hiwonder.com/products/xarm-unowith-sensor?variant=39331922837591&_pos=11&_sid=5aa585ef1&_ss=r
Upgrade to Raspberry pi kit: https://www.hiwonder.com/products/raspberry-pi-4b-extension-kit-for-xarm?_pos=7&_sid=69f7844be&_ss=r&variant=39373787922519
