DFR0334

DFR0334 Datasheet

GPIO Shield for Arduino V1.0 SKU DFR0334

Part	Datasheet
DFR0334	DFR0334 (pdf)

PDF Datasheet Preview
GPIO Shield for Arduino V1.0 SKU DFR0334 Contents • 1 Introduction • 2 Specification • 3 Board Overview PCA9555DB IIC Address VCC Jumper Caps • 4 Tutorial Requirements Connection Diagram Sample Code • 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 • Arduino Digital Pins 14, D0 - D13 • Arduino Analog Pins 6, A0 ~ A5 • IIC - GPIO Digital Pins 16, P0.0 ~ P0.7 P1.0 ~ P1.7 • IIC Port 1 • UART Port 1 • Power Supply 5 VDC / External Power Supply jump cap switch • Reset Button 1 • Dimensions x mm / x inches • Weight 30g Board Overview NumName 1 External Power 2 VCC Jumper Caps PCA9555DB IIC Address Setting 4 Arduino Digital I/O Pins 5 Arduino Analog input Pins 6 IIC to GPIO Digital Pins 7 IIC Port 8 UART Port Description 5 VDC Choose to power from board or shield external power Set PCA9555DB I2C Address 0x20~0x27 D0~D13 A0~A5 P0.0~P0.7 P1.0~P1.7 IIC Communication UART Communication PCA9555DB IIC Address • Config PCA9555 IIC Address with A0~A2 Jumper Caps 0x20~0x27 Plug = 0 Unplug = 1 A2 A1 A0 I2C Address 0x20 Default 0x21 0x22 0x23 0x24 0x25 0x26 0x27 "D" represents digital signal "A" represents analog signal One of the biggest benefits of the I/O expansion shield is more power and GND pins, allowing you to connect more sensors. * Green digital signal * Blue analog signal * Red VCC * Black GND • This is DFRobot's Gravity Interface. Digital and analog connections are easy to recognize and support most of DFRobot's I/O expansion shields and modules. Search "Gravity" in the DFRobot store to find compatible modules. VCC Jumper Caps There are two Jump caps, you can change the position of two caps for the different VCC power input. See the following schematic for details: The middle pin is the shield VCC pin. If you connect caps on the left side, VCC pins get power from the shield external port If you connect caps on the right side, VCC pins get power from the board 5V port This is suitable for some applications that require greater current. Tutorial Requirements • Hardware DFRduino UNO x1 GPIO Shield for Arduino x1 Button module LED module • Software Arduino IDE Click to Download Arduino IDE from Connection Diagram Sample Code In this section, we will use an Arduino library written by nicoverduin Github Library. About Library installation.

PDF Datasheet Preview

GPIO Shield for Arduino V1.0 SKU DFR0334

Contents
• 1 Introduction
• 2 Specification
• 3 Board Overview

PCA9555DB IIC Address VCC Jumper Caps
• 4 Tutorial Requirements Connection Diagram Sample Code
• 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
• Arduino Digital Pins 14, D0 - D13
• Arduino Analog Pins 6, A0 ~ A5
• IIC - GPIO Digital Pins 16, P0.0 ~ P0.7 P1.0 ~ P1.7
• IIC Port 1
• UART Port 1
• Power Supply 5 VDC / External Power Supply jump cap switch
• Reset Button 1
• Dimensions x mm / x inches
• Weight 30g

Board Overview

NumName 1 External Power
2 VCC Jumper Caps

PCA9555DB IIC Address Setting
4 Arduino Digital I/O Pins
5 Arduino Analog input Pins
6 IIC to GPIO Digital Pins
7 IIC Port
8 UART Port

Description 5 VDC Choose to power from board or shield external power

Set PCA9555DB I2C Address 0x20~0x27

D0~D13 A0~A5 P0.0~P0.7 P1.0~P1.7 IIC Communication UART Communication

PCA9555DB IIC Address
• Config PCA9555 IIC Address with A0~A2 Jumper Caps 0x20~0x27

Plug = 0 Unplug = 1

A2 A1 A0

I2C Address 0x20 Default
0x21 0x22 0x23 0x24 0x25 0x26 0x27
"D" represents digital signal "A" represents analog signal

One of the biggest benefits of the I/O expansion shield is more power and GND pins, allowing you to connect more sensors.
* Green digital signal * Blue analog signal * Red VCC * Black GND
• This is DFRobot's Gravity Interface. Digital and analog connections are easy to recognize and support most of DFRobot's I/O expansion shields and modules. Search "Gravity" in the DFRobot store to find compatible modules.

VCC Jumper Caps

There are two Jump caps, you can change the position of two caps for the different VCC power input. See the following schematic for details:

The middle pin is the shield VCC pin. If you connect caps on the left side, VCC pins get power from the shield external port If you connect caps on the right side, VCC pins get power from the board 5V port This is suitable for some applications that require greater current.

Tutorial

Requirements
• Hardware DFRduino UNO x1 GPIO Shield for Arduino x1 Button module LED module
• Software Arduino IDE Click to Download Arduino IDE from

Connection Diagram

Sample Code

In this section, we will use an Arduino library written by nicoverduin Github Library. About Library installation.

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Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived DFR0334 Datasheet file may be downloaded here without warranties.

Datasheet ID: DFR0334 508725