micro:bit is a pocket-sized microcontroller designed for kids and beginners to learn coding and electronics, letting them easily bring ideas into DIY digital games, interactive projects and robotics.
micro:bit
However, on-board I/O rings and crocodile clips sometimes are not handy and safe enough to connect peripherals. To explore more possibilities with micro:bit, we have designed the micro:bit Expansion Board for Boson, a carry-on board that connects to micro:bit via edge connector.
The expansion board comes with 6 fool-proof 3-Pin sockets, compatible with hundreds of DFRobot’s Boson and Gravitymodularized electronic blocks, covering most popular digital and analog sensors and actuators, supporting sound, light and motion interaction.
Moreover, the on-board 3.5MM headphone jack and volume knob supports direct connection of headphone. To ensure a steady current supply for these peripherals, the expansion board can be powered externally through the USB power port.
micro:bit Boson game pad micro:bit RGB LED heart rate monitor
Product Image
Product Name
Micro:bit - an Educational & Creative Tool for Kids
Micro:Mate - A Mini Expansion Board for micro:bit (Gravity Compatible)
micro:bit Expansion Board for Boson (Gravity Compatible)
SKU
DFR0497
DFR0518
DFR0521
Operating Voltage
3.5~5.5V
3.3V/5V
3.3V
Power supply
DC2.1/Terminals
USB
USB
External supply voltage
3.5~5.5V
3.3V/5V
3.3V/5V
Digital ports (IO/PWM)
17/8
3
3
Analog ports (input/output)
P0、P1、P2
3
3
UART
x
x
x
I2C
2
x
x
SPI
x
x
x
Interrupt pin (quantity)
x
x
x
Interface Type
Gravity
Gravity
Gravity
3.5mm headphone port
x
√
√
Dimension
63 x 58 mm
68.5×53.3 mm
80×70 mm
Mounting hole
50*55
-
-
Weight (g)
64
23
48
Price
$14.9
$5.9
$7.9
Drive the servo
√
√
x
Scenarios
Many motors and sensors needed
Suitable for small Works
Initial Stage
Key Features
17 io ports with 2 i2c interfaces
Can drive Quad DC Motor Driver
IO port expands 6 and the pin replaces the edge connector slot
Anti-reverse pad on the back, which protects the control board and prevents micro-reverse
Drive high current equipment, such as steering gear, components connected to 8 12 16
3-Pin fool-proof connector x 6
Edge Connector
FEATURES
3-Pin fool-proof connector x 6
Headphone jack with volume knob
External power port and ON/OFF switch
DFRobot Gravity and Boson electronic module compatible
SPECIFICATION
MicroUSB Power Port Voltage：5V
PH2.0 Input/output Voltage: 3.3V
Input/output ring Voltage: 3.3V
Maximum Current: 500mA
Working temperature: 0-85 ℃
Dimension 80 * 70 mm / 3.15 * 2.76
Weight: 48g
SHIPPING LIST
micro:bit Expansion Board for Boson x 1
200mm fool-proof PH2.0 cable x 6
PROJECTS
Project 1. Micro:bit Surprise box In this project it shows how the box interacts with flahsing hearts. Main Components:
micro:bit
DFRobot micro:bit Expansion Shield
DFRobot Ambient Light Sensor
Servo Motor 9g
Project 2. Halloween pumpkin lamp made by micro:bit
How can a Halloween without a pumpkin lamp? The pumpkin lamp made of recently popular Microbit is a good choice.
Microbit *2
micro:bit Expansion Board for Boson (Gravity Compatible) *1
Digital RGB LED Strip 180 LED - (3m)(weatherproof) *1
3.7V battery *2
Lithium battery charger *1
Project 3: A colorful grapefruit made use of micro:bit
As a trickster for Halloween, how can we lack an ingenious pumpkin lantern as an equipment?
Hardware components:
Big grapefruit *1
micro:bit *1
micro:bit Expansion Board for Boson (Gravity Compatible) *1
Micro:bit battery holder *1
Light strip *1
Needle, utility knife, chopsticks or small wooden stick, scrap wire or wire, wool
After programming the micro:bit, you can plug in power to Vin. The Vin will power the micro:bit.
Hardware components:
micro:bit *1
Gravity expansion board for micro:bit *1
Neopixel ring 16 LEDs *1
Dupont cables *1
Old lamp *1
Project 5: micro:bit Laser Target
The ambient light sensor sensor detects the intensity of the laser pointer. If it is greater than 400, it will sound the buzzer and the servo will make the target fall and up. Game over when it reaches 10. Press A to reset score to 0.
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