Name: micro:bit Expansion Board for Boson (Gravity Compatible)
Brand: DFRobot
SKU: DFR0521
Price: 7.9 USD
Availability: InStock

Introduction

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 the edge connector.

The expansion board comes with 6 fool-proof 3-Pin sockets, compatible with hundreds of DFRobot’s Boson and Gravity modularized electronic blocks, covering most popular digital and analog sensors and actuators, supporting sound, light, and motion interaction.
Click the link to learn more about DFRobot’s Boson module: https://www.dfrobot.com/boson
Click the link to learn more about DFRobot’s Gravity module: https://www.dfrobot.com/gravity

Moreover, the expansion board adds a Gravity: HuskyLens interface and an IIC interface. To ensure a steady current supply for these peripherals, the expansion board can be powered externally through the Micro-USB power port.

micro:bit Expansion Board for Boson (Gravity Compatible) Game:pad

micro:bit Boson game pad
micro:bit Expansion Board for Boson (Gravity Compatible) Connected with heart rate monitor

micro:bit RGB LED heart rate monitor

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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 Compatible with sensor

Features

3-Pin fool-proof connector x 6

IIC connector x1

Gravity: HuskyLens connector x1

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

HuskyLens input Voltage：5V

Maximum Current: 500mA

Working temperature: 0-85 ℃

Dimension 80 * 70 mm / 3.15 * 2.76

Weight: 48g

Projects

Project 1. Micro:bit Surprise box
In this project it shows how the box interacts with flahsing hearts.
Main Components:

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

Microbit Project 4: Micro:bit Light(Mood Lamp)

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.