Raspberry_Pi_GPIO_Extension_Board_SKU_DFR0312 - jimaobian/DFRobotWiki GitHub Wiki

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Introduction

As we all know raspberry motherboard CPU than Arduino MCU used in the more sophisticated. It by BGA encapsulation, and also directly above the fold on the CPU DDR memory.If not careful in doing experiments short-circuit the GPIO, the motherboard can be fatal, CPU if burned raspberry motherboard will be very difficult to repair. In view of the current hot Raspberry Pi motherboard, DFRobot launched a new generation of latest Rasperry Pi GPIO Extension Board raspberries pie GPIO adapter plate, for many customers reflected in the prototype when burned motherboard, DFRobot protection design for all IO.

Specification

Supply 3.3v and 5v voltage output
Bidirectional Voltage-Level Translator GPIO protection board
Converte voltage level between 3.3v and 5v for GPIOs,SPI,I2C and Serial port
Compatible with most of Arduino sensors as well as protecting the Raspberry Pi GPIO pins from voltage spikes and static discharge
Directly compatible Breadboard for prototyping
Dimension: 5cm x 4cm x 2cm

Pin Mapping

pin map

How to drive a LED using GPIO Extension Board and breadboard

Connection Diagram

connect pic 500px

Example Code

Note:WiringPi includes a command-line utility gpio which can be used to program and setup the GPIO pins. You can use this to read and write the pins and even use it to control them from shell scripts. More information about wiringPi, please check http://wiringpi.com/download-and-install/ The code below will be used to drive and blink the LED every 1s via GPIO Extension board.

#this is linux shell script
#blink.sh using wiringPi library

PIN=6
gpio mode $PIN out
while true;
do
gpio write $PIN 1
sleep 1
gpio write $PIN 0
sleep 1
done

Effect Picture

example

Install WiringPi Library

> sudo apt-get update
> sudo apt-get install git-core
> sudo git clone git://git.drogon.net/wiringPi
> cd wiringPi
> ./build

for test

> gpio -v
> gpio readall