INTRODUCTION TO RASPBERRY PI

Computer in your palm.
Single-board computer.
Low cost.
Easy to access.

Specification :

Basic Architecture :

Raspberry Pi

Raspberry Pi GPIO

Act as both digital output and digital input.

Output : turn a GPIO pin high or low.

Input : detect a GPIO pin high or low.

Raspberry Pi pin configuration

Basic Set up for Raspberry Pi

• HDMI cable
• Monitor.
• Key board
• Mouse
• 5volt power adapter for raspberry pi.
• LAN cable
• Min - 2GB micro sd card

Operating System

Official Supported OS :

• Raspbian
• NOOBS

Some of the third party OS :

• UBUNTU mate
• Snappy Ubuntu core
• Windows 10 core
• Pinet 
• Risc OS

Raspberry Pi Setup

Download Raspbian :

• Download latest Raspbian image from raspberry pi official site :  https://www.raspberrypi.org/downloads/
• Unzip the file and end up with an .img file.

Raspberry Pi OS Setup
Write Raspbian in SD card :

• Install "Win32 Dist Imager" software in windows machine .
• Run Win32 Disk Imager
• Plug SD card into your PC
• Select the "Device"
• Browse the "Image File" (Raspbian image)
• Write

Basic Initial Configuration

Enable SSH

Step1 : Open command prompt and type sudo raspi-config and press enter.

Step2 : Navigate to SSH in the Advance option.

Step3 : Enable SSH

Programming :

Default installed :

• Python
• C 
• C++
• Java
• Scratch
• Ruby

Note : Any language that will compile for ARMv6 can be used with raspberry pi.

Popular Applications

• Media streamer
• Home automation
• Controlling BOT
• VPN
• Light weight web server for IOT
• Tablet computer

Blinking LED

• Requirement :
• Raspberry pi
• LED
• 100 ohm resistor
• Bread board
• Jumper cables

Installing GPIO library :

• Open terminal
• Enter the command "sudo apt-get install python-dev" to install python
• Enter the command "sudo apt-get install python-rpi.gpio" to install GPIO library.
• Connection :

        - Connect the negative terminal of the LED to the ground pin of pi.
        - Connect the positive terminal of the LED to the output pin of pi

Basic python coding :

• Open terminal enter the command
• This will open the nano editor where you can write your code
• Ctrl+O : Writes the code to the file
• Ctrl+X : Exits the editor