DFRobot Micro:bit Driver Expansion Board | 4 DC Motors & 8 Servos
DFRobot Micro:bit Driver Expansion Board | 4 DC Motors & 8 Servos
Couldn't load pickup availability
Short Product Description
Short Product Description
Unlock the full potential of your robotics projects with theDFRobot Micro:bit Driver Expansion Board. Designed for makers and STEM students, this compact powerhouse lets you control up to 4 DC motors (or 2 stepper motors) and 8 servos simultaneously. With itsIIC external drive chip, you save valuable pin resources while delivering reliable, high-current power to your builds. Plug in your power bank, connect your Gravity sensors, and bring your Micro:bit creations to life instantly.
Key Features
Key Features
- Dual Motor & Servo Control: Drive up to 4 DC motors (or 2 stepper motors) and 8 servos simultaneously, perfect for complex robotic builds.
- IIC Interface Efficiency: Controls all motors and servos using just two IIC pins, freeing up your Micro:bit for additional sensors.
- High-Current Output: The HR8833 driver delivers up to 1.5A continuous current, providing stable power for N20 mini metal motors and standard servos.
- Visual Direction Indicators: Built-in LED rotation indicators on each motor port allow for instant visual debugging of motor direction.
- Gravity-Compatible GPIOs: 9 expanded GPIO interfaces (P0-P16) use the standard DFRobot-Gravity layout for seamless plug-and-play sensor integration.
- Flexible Power Input: Supports 3.5V-5.5V via battery boxes or the included USB-to-DC cable for convenient power bank operation.
Full Product Description
Full Product Description
Build Advanced Robotics Without the Wiring Mess
Are you tired of running out of pins when building complex Micro:bit projects? The DFRobot Micro:bit Driver Expansion Board solves this problem by using an IIC external drive chip. This smart design takes up only two IIC pins, leaving the rest of your Micro:bit free for other sensors and modules.
Whether you are building a multi-wheel rover, a robotic arm, or an automated smart home model, this board provides the exact power and control interface you need.
Powerful Motor & Servo Control
Drive your projects further with the onboard HR8833 motor driver. Delivering a maximum continuous operating current of 1.5A, it easily powers standard small motors and N20 mini metal motors.
- Need precision? Reconfigure the 4-way DC motor drives into a 2-way stepper motor setup.
- Building a robotic arm? The 8-way servo interface connects directly to the Vin power supply, ensuring your servos get the high current they need to operate simultaneously without jittering.
Built for STEM Education & DIY Makers
We know that debugging hardware can be frustrating. That is why every motor port features positive and negative rotation indicators (LEDs). You can instantly visually verify the running direction of your motors, saving hours of troubleshooting.
Furthermore, the board integrates 9 Micro:bit onboard GPIOs using the DFRobot-Gravity standard interface. This means you can plug-and-play hundreds of compatible sensors and modules without messy breadboards or soldering.
Eco-Friendly & Flexible Power Options
Powering your robot shouldn't tie you to a wall outlet. This expansion board supports a 3.5V to 5.5V power supply via a DC 2.1 plug or a secure wiring terminal. We also include a USB to DC 2.1 adapter cable, allowing you to power your entire project using a standard, eco-friendly portable power bank.
Technical Specifications
Technical Specifications
- Operating Voltage: 3.5V ~ 5.5V DC
- Digital Output Voltage: 0V / 3.3V
- Analog Output Voltage: 0~3.3V DC
- Micro:bit GPIO Interfaces: 9 (P0, P1, P2, P8, P12, P13, P14, P15, P16)
- Servo Interfaces: 8-way (Powered directly from Vin)
- Motor Interfaces: 4x DC Motors OR 2x Stepper Motors
- Motor Driver Chip: HR8833 (Max continuous current 1.5A)
- Expansion Interface: Standard DFRobot-Gravity Interface
- Dimensions: 63mm x 58mm (2.48 x 2.28 inches)
- Included in Box: 1x Micro:bit Driver Expansion Board, 1x USB to DC 2.1 Charging Cable
Delivery Options
Delivery Options
- Local delivery within Hong Kong and in-store pickup.
- Free shipping for orders of HK$400 or above; HK$35 shipping fee for orders below HK$400.
- Shipped by SF Express, usually dispatched the same day for orders confirmed before 6:00 PM (Mon–Sat).
- Estimated delivery time: 1–3 business days after dispatch (Hong Kong).
- In-store pickup details (location and time) will be confirmed by email or phone message.
- Delivery times are estimates and may be affected by weather or unforeseen circumstances.
FAQ Section
FAQ Section
Q. Can I power this board using a portable power bank?
A. Yes! The package includes a USB to DC 2.1 adapter cable. You can plug this directly into a standard 5V portable power bank, making your robotics projects highly mobile and eco-friendly.
Q. Will running 8 servos at once cause the Micro:bit to crash?
A. No. The servo interfaces are wired directly to the Vin power supply rather than drawing power through the Micro:bit's internal circuitry. This ensures a high-current supply to keep multiple servos running smoothly without resetting the board.
Q. Do I need to solder anything to connect my sensors?
A. Not at all. The board features standard Gravity interfaces for the GPIO pins, allowing you to use simple 3-pin jumper wires to plug in sensors and modules instantly.
Target Users / Applications
Target Users / Applications
- STEM Educators & Teachers: Ideal for classroom robotics and coding curriculum.
- Students & Hobbyists: Perfect for building RC cars, robotic arms, and automated kinetic art.
- Makers & Prototypers: Excellent for rapid prototyping of IoT and smart home devices requiring motor actuation.
