Up and running with Raspberry Pi
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This document provides an overview and introduction to using Raspberry Pi. It begins by outlining what topics will be covered, including an introduction to Raspberry Pi hardware, operating systems, installation, programming with Python and GPIO pins. It then describes what a Raspberry Pi is, its specifications, history and affordable price. Steps for minimum hardware requirements, installing an operating system on an SD card, and initial boot up are outlined. The document discusses operating systems, package management, and demonstrates programming and projects including an LED blink example. Remote access options like SSH and VNC are also covered.
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Up and running with Raspberry Pi
- 1. Up and Running with Raspberry Pi (RaspberryPi-101) Shahed
- 2. What we are gonna learn ==> • Introduction to Raspberry Pi • Hardware description • Types of OS for Pi • Installation of OS • OS instruction • Remote Access using SSH, VNC, Cyberduck • Package management • Python, GCC and Scratch • Accessing GPIO ports with Python • LED blink project • Some awesome projects using RPi
- 3. About Me • Mechanical Engineering Undergrad • Hardcore fan of Linux ecosystems • Build robots as a hobby • Love to play with Python
- 4. What is a Raspberry Pi? • Credit Card sized single board computer • Plugs into a TV or a Monitor • Based on Broadcom chips • Runs a complete version of Linux • Has multiple usb ports for communication • Supports gigabit ethernet lan 10/100 • Can deliver full HD (1080P) video output • Affordable
- 5. Time for some history!!! • The Raspberry Pi is the work of the Raspberry Pi Foundation, a charitable organisation. • Developed in U.K by Raspberry Pi foundation in 2009. • Project Initiated By Initiated by Eben Upton. • It's supported by the University of Cambridge Computer Laboratory and tech firm Broadcomm
- 6. Why Raspberry Pi? • Very Low Cost ($25 for Model A & $35 for Model B/B+) • Great tool for Learning Programming, Computers & Concepts of Embedded Linux, etc • Support for All Age Groups (School Children, College Undergraduates, Professional Developers, Programmers) • Supports & runs Free and Open Source Linux OS • Consumes less than 5W of Power • Supports Full HD Video Output (1080p), Multiple USB Ports , etc • Fun to learn & explore. You are limited by your imagination
- 7. Technology used in a Pi Model A Model B+ Model B+
- 8. Hardwares :
- 9. Arduino vs Raspberry Pi Specs Arduino Uno Raspberry Pi Model B+ CPU type Microcontroller Microprocessor Operating System None Linux (usually Raspbian) Speed 16 Mhz 700 Mhz RAM 2KB 512MB GPU/Display None VideoCore IV GPU Disk 32KB Depends on SD card GPIO pins 14 digital pins (includes 6 analog) 26 digital pins Other connectivity None USB, Ethernet, HDMI, audio Power consumption 0.25W 3.5W
- 10. Minimum things to get started • Raspberry Pi • HDMI/VGA monitor • USB Keyboard • USB Mouse • USB WiFi adapter (If isn't built-in) • 2.0+ Amp USB Power Adapter • Micro-USB cable • 8GB+ Micro-SD card • A Computer to load initial card image
- 11. Setting up the Pi 6. USB TO POWER SOURCE 5. TO MONITOR 4. TO MOUSE 3. TO KEYBOARD 2. WI-FI ADAPTER 1. SD CARD
- 12. Operating Systems for Pi • Raspbian (Jessie, Jessie lite) • Ubuntu (Snappy Ubuntu Core) • Fedora • Debian • Archlinux ARM • Windows 10 IoT Core • Kali Linux • OpenELEC • RetroPIe
- 13. Preparing the SD card with an OS • Step 1: Download bootable disk .iso's (raspbian jessie) • Link:https://www.raspberrypi.org/downloads/raspbian • Step 2: Write iso image to SD card • For Windows • Win32Disk Imager • For Mac/Linux • Win32Disk Imager • Using dd command • sudo dd bs=4M if=path_to_iso.iso of=/dev/sdX (where X is the drive number)
- 14. Let's boot it up!!! • Plug in all the accessories • Plug in the power cable • Pi will start booting automatically (First boot may take a long time) • You may have to face a configure window (If it happens, follow it through)
- 15. Default Credentials for a new user • If you encounter for a username and password: • username: pi • password: raspberry • After login, type 'startx' to go to the Desktop
- 17. Time for making it home! ▶▶ ▶▶
- 18. Wifi Configuration Menu > Preferences > Wifi Configuration OR Click on the network icon on the top panel
- 19. Almoooooost Ready!! Just one more step! :p
- 20. Do a system update (It is important to function all the apps working correctly) • Open up the terminal: • Write--> sudo apt-get update • and--> sudo apt-get upgrade ** Reboot after completing the update process and we are good to go!!! :D
- 21. A tour to Raspbian • Web Browser: Epiphany • Office Applications: Libreoffice • Media Player: VLC • Run: sudo apt-get install vlc • Programming: • Geany (an IDE) • IDLE, IDLE3 (python IDE) • Sonic Pi • Scratch
- 22. A Little bit of linux • Bash (Linux Shell) • Terminal Commands • Linux File Systems
- 23. Linux Shell • To interact with the Operating System or Hardware we need to enter some commands in the “Shell”. • Simply put, the shell is a program that takes your commands from the keyboard and gives them to the operating system to perform.
- 24. Basic Linux Commands • Show directory contents: • (Do this after every command below to see what has changed) • ls or ls -l • Make directory: • mkdir lesson • Change directory: • cd lesson • Create an empty file: • touch myfile • Edit file with nano: • nano myfile • Type something random inside the text editor then press Ctrl+X to save and quit. • View file quickly: • cat myfile • Copy file • cp myfile myfile2 • Remove file: • rm myfile • Move file • mv myfile2 myfile
- 25. More Useful Commands Command Purpose man Get information about a particular command. Eg: man ls ifconfig Get network information like IP address adduser Create user passwd Change password uname –a, uname -r Show OS information history Shows past commands you ran chmod Change permissions of a file/directory
- 26. File System Directory Layout • /home/pi or “~” • Your “Home” directory • Removable Drives at • /media/pi/….
- 27. The Linux File System bin : Essential command binaries boot : Static files of the boot loader dev : Device files etc : Host-specific system config home : User login and data folders lib : Essential shared libraries and kernel modules mnt : Mount point for mounting a file system or media opt : Add-on application software packages proc : Virtual folder that has information about system root : Home folder of the Linux super user sbin : Essential system binaries tmp : Temporary files usr : Secondary hierarchy var : Variable data
- 28. Package Management • Package manager means? • Which installs software from online repositories • Maintains dependencies for you **In Linux systems software comes as packages (firefox,music player etc.)
- 29. Using the Package Manager Htop: • Process information viewer like Windows Task Manager • Always run before package installation • Update local repository index • sudo apt-get update • Install htop • sudo apt-get install htop -->Now we will install htop ** Now open up the Terminal and type 'htop'
- 30. Remote Connect to Pi Step 1: Getting your Pi’s IP address pi@raspberrypi ~$ hostname -I You’ll need the IP address when you connect the Pi from your computer!!!
- 31. Remote Connect to Pi Step 2: Chosing the method • SSH to your Pi from terminal, and keep working on the terminal • SSH with a client, e.g. Cyberduck, and use your usual IDE • Use VNC (Virtual Network Computing), and work on the virtual GUI
- 32. Remote Connect to Pi Setting SSH • SSH – Secure Shell • http://en.wikipedia.org/wiki/Secure_Shell • Direct and Remote Login methods in Rpi • Types of remote connections • Rpi and PC connected through router • Rpi and PC connected through direct connection • Rpi Wifi Hotspot
- 33. Remote Connect to Pi SSH to Pi from your laptop (Terminal on Mac/Linux, PuTTY on Windows): me@MyLinux ~$ ssh pi@193.168.10.1 Your Pi’s username Use your Pi’s IP!
- 35. Remote Access w/ VNC • VNC(Virtual Network Computing) • http://en.wikipedia.org/wiki/VNC_server • Graphical desktop sharing system
- 36. Remote Access w/ VNC Remote-access to Raspberry Pi’s graphical interface. • On Your PC: • Install VNC Viewer Client in Windows • For Linux/Mac • $ Install tightvncviewer • $ vncviewer ip:5901 • $ vncviewer 192.168.1.3:5901 Download Link for VNC: http://www.realvnc.com/download/viewer/
- 37. Remote Access w/ VNC On your Pi • Install Tight VNC Server pi@raspberrypi ~$ sudo apt-get install tightvncserver • Run the server pi@raspberrypi ~$ tightvncserver
- 38. Remote Access w/ VNC Run the client software on your PC Pi’s IP address Usually :1 (but it can be different. Check the VNC server!)
- 39. Remote Access w/ VNC
- 40. SSH w/ Cyberduck ○ No virtual GUI, but faster than using VNC ○ You can use your fave IDE to edit files ○ Mac users can keep using Mac keyboard shortcuts Download the client at: https://cyberduck.io/
- 41. Cyberduck Demo
- 42. Programming on Raspberry Pi • Raspberry Pi supports several Programming Languages like : Python, C, C++, JAVA, Perl, HTML5, JavaScript, JQuery etc. • Python is supported as the principal or main user programming language. • Extremely powerful and flexible language. • Can also be used to control hardware on the Pi. • Compiled using gcc (GNU Compiler Collection) ** Learning Programming = Practice Writing Programs
- 43. Programming on Raspberry Pi
- 44. Programming on Raspberry Pi • Demo of Python Program on IDLE. • Demo of C Program on Raspberry Pi. • Demo of Scratch Program on Raspberry Pi.
- 45. GPIO on Raspberry Pi • 26 GPIO Header in Model A/B and 40 GPIO Header in Model B • These pins are a physical interface between the Pi and the outside world. • Out of 26, 8 are dedicated IO Lines, 2 are for UART, 4 are for SPI (+1 for Another Chip Select) , and another 2 for the I2C Interface (Total 17 out of 26) • Rest are Supply Rails. • Model B+ has 9 additional GPIO including a extra SPI (Total 17 + 9 = 26 out of 40) • WiringPi : Easy to use C Library for accessing the GPIO Lines via Programming (Arduino Style Programming)
- 46. Let's Do Blinky!!! Making of a LED Blinker using Python ==> What you will need: -> A raspberry pi -> A LED -> A 330Ω resistor to protect the LED -> Jumper wires
- 47. Let's Do Blinky!!! Step 1: Make sure if the LED is okay • Connect the jumper wires as shown • One wire on the short leg of LED (Negative) • Another one attached with the resistor is on the long leg (Positive) LED
- 48. Let's Do Blinky!!! Step 1: Make sure if the LED is okay • Connect the wires as shown • One in the 3.3V pin (Positive wire) • Another one is in GND ** Check if the LED is on! 3.3V (Pin 1) GND Cathode Anode (longer leg)
- 49. Let's Do Blinky!!! 3.3V Ground GPIO (general purpose input output)
- 50. Let's Do Blinky!!! GPIO-4 (Pin 7)
- 51. Let's Do Blinky!!! ->Programming the LED import RPi.GPIO as GPIO import time GPIO.setmode(GPIO.BCM) LED = 4 GPIO.setup(LED,GPIO.OUT) while True: GPIO.output(LED,True) time.sleep(1) GPIO.output(LED,False) time.sleep(1) import RPi.GPIO libs set LED pin as output toggle light pin signal to low/high to make it blink. set pin type. use BCM, not pin number GPIO 4 pin (Pin 7)
- 52. Congrats!!! You just finished your first Raspberry Pi project!
- 53. Project Showcase 1) Raspberry Pi Wall Mounted Google Calendar – On Instructables
- 54. Project Showcase 2) PiPad: Tablet Using Raspberry Pi
- 55. Project Showcase 3) PiPhone : Using Raspberry Pi
- 56. Project Showcase 4) Pi as a Media Centre : Using Open Source XBMC
- 57. Project Showcase 5) Running a Web server on Raspberry Pi
- 58. Project Showcase 6) Iridis-Pi : Supercomputer using Raspberry Pi (64 Processors, 1 TB of Memory.
- 59. Project Showcase 7) Low Cost HD Surveillance Camera
- 60. Project Showcase 8) Games on Raspberry Pi
- 62. Thank You !!