GPIO Shield for Arduino V1.0 SKU: DFR0334

Contents

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1 Introduction

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2 Specification

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3 Board Overview

3.1 PCA9555DB IIC Address

3.2 VCC Jumper Caps

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4 Tutorial

4.1 Requirements

4.2 Connection Diagram

4.3 Sample Code

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5 FAQ

Introduction

An Arduino UNO has a limited number of GPIO pins - but what if it is not enough? The GPIO

expansion shield specifically designed for Arduino UNO-type boards. This shield greatly expands the

GPIO resources to 36 pins in total, including 14 digital pins, 6 analog pins and 16 I2C pins. In

addition digital and analog pins include the DFRobot "Gravity" interface, giving you in-line power and

ground pins and saving you having to connect millions of jumper wires for a single sensor.

Specification

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Arduino Digital Pins: 14, D0 - D13

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Arduino Analog Pins: 6, A0 ~ A5