micro:bit Expansion Board Selection Guide

$USD

SELECTION GUIDE micro:bit

DFRobot micro:bit Expansion Board Selection Guide

DFRobot Dec 25 2018 63

Introduction

micro:bit is a pocket-sized microcontroller designed for kids and beginners learning how to program, letting them easily bring ideas into DIY digital games, interactive projects and robotics. 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 Boards.

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

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