Raspberry Pi Workshop

Transcription

1 Raspberry Pi Workshop

2 Resources and Materials:

3 Presenters Nick Yee Aexander Nunes Adriana Ieraci

4 Agenda 10:00 Registration 10:20 Introductions and Overview 10:50 Install OS and Boot Up the Pi 11:20 Walk through OS, Desktop and Applications 11:30 Networking, Transferring Files 11:50 Makey Makey Overview and Connections 12:20 Lunch 1:30 Physical Computing, Scratch and Pi GPIO Overview 2:00 Brainstorm and Design Projects 2:30 Break 2:40 Build and Develop Projects 3:45 Demonstration 4:00 Wrap up

5 How to create a program that will run on the Pi using Scratch Workshop objectives What the Raspberry Pi is, what you can use it for, and what inventors, hackers and hobbyists are doing with it How the Pi is different from other microcontrollers and computers available How to install the Pi's operating system, configure it, and boot up the Pi

6 Intro to the Raspberry Pi The Raspberry Pi is a credit-card sized computer designed for kids to experiment with and learn to program and learn about embedded Linux systems.

7 Overview of the Raspberry Pi

8 Operating System A disk image is required to install the OS onto the Pi There are multiple images available ( but the most common ones are based on optimized versions of the Debian Linux distro (Raspbian) Since June 2013, the NOOBS (New Out Of the Box Software) utility was developed to simplify the OS installation and recovery process

9 Operating Systems, Distros Linux is to Raspbian as Dos is to Windows as Unix is to Mac

10 Preparing the SD card 1) Format SD card (4GB+) 2) Download NOOBS (offline and network install - downloads.raspberrypi.org/noobs_latest) 3) Copy extracted files onto formated SD card 4) Insert SD card into Pi and connect power supply The Pi will take about 20 mins to boot up

11 What to Connect SD card in slot USB Hub USB Mouse and Keyboard HDMI Cable (correct input selected on monitor) Ethernet Cable Power Cable

12 Boot Up

13 History of the Raspberry Pi In 2006, early concepts of the Raspberry Pi were based on the Atmel ATmega644 microcontroller. The Raspberry Pi Foundation is a charity founded in 2009 to promote the study of basic computer science in schools The Foundation is supported by the University of Cambridge Computer Laboratory and Broadcom In 2011, the Raspberry Pi Foundation developed a single-board computer named the Raspberry Pi Initial sales commenced 29 February 2012 and in October 2013 the one millionth Pi had been manufactured in the United Kingdom

14 Technical Analysis The Raspberry Pi is composed of: a Broadcom BCM2835 system on a chip (SoC), which includes an ARM1176JZF-S 700 MHz processor VideoCore IV GPU 512 MB of RAM (originally 256 MB) Built-in connectivity: Micro-USB Power, USB x2, Ethernet, HDMI out, RCA out, 3.5 mm Audio out, SD card reader, GPIO (General Purpose Input/Output)

15 Raspberry Pi vs. Arduino The Raspberry Pi is a microprocessor-based singleboard computer The Arduino is a microcontroller-based physical computing platform The Raspberry Pi is better suited for complex logic, multimedia and offers more programming options The Arduino has more input/output options

16 Overview of Raspbian

17 Bad Power? Freezing of desktop Corrupted SD card (corrupts, even discmounts, and filestystem is not restorable) Popping sound from speakers Intermittent operation of mouse, keyboard or other device plugged into hub

18 Booted Units

19 ScratchGPIO2 Scratch GPIO v2 is a modification of Scratch to allow for GPIO interaction through Scratch programs To install go to the following file for cut & paste commands:

20 Install ScratchGPIO2 Links and Commands Install ScratchGPIO2 and sample program 1) Download the script sudo wget -O /boot/install_scratch_gpio2.sh 2) Execute the script to install sudo /boot/install_scratch_gpio2.sh 3) Copy a sample Scratch Program (3_led_test) sudo wget -O "/home/pi/documents/scratch Projects/ 3_led_test.sb"

21 Makey Makey Turns anything into Keyboard input

22 Makey Makey Turns anything into keyboard input ATMega32u4 microcontroller running Arduino Leonardo Human Interface Device (HID) protocol to communicate with your computer High resistance switching to sense the connection

23 Connecting the Makey Makey

24 Materials

25 Makey Makey Exercise (search Makey) FreeRun Space Invaders Leon up, down arrows, Space Bar

26 What is the Pi GPIO? General Purpose Input/Output Digital input and output Not buffered so be careful

27 Connecting the LEDs to the GPIO Connect Ground line to PIN6 Connect LED circuits to PIN11, PIN12, PIN13

28 Pi GPIO Picture

29 What is an Expansion Shield? Attaches to the board headers Extends functionality of the board, usually for a specific purpose Some contain working circuits with their own functionality (GPS shield etc.) Some provide easy connections for your own projects to connect parts (motor shield)

30 Adafruit Raspberry Pi Plate prototyping shield Breaks out the GPIO pins Solder or temporarily connect parts

31 A La Mode: Pi to Arduino shield Arduino-compatible shield that plugs into Pi GPIO Program the Arduino from the Pi, control and monitor it

32 ehealth Sensor Shield by Cooking Hacks

33 Connect and Check the LEDs

34 Overview of Scratch Scratch is an educational programming language and multimedia authoring tool that can be used by students, teachers, and parents for a range of educational and entertainment projects It s a open source tile-based visual programming environment and toolkit The first version was developed in 2003 by the Lifelong Kindergarten group, led by Mitchel Resnick, at the MIT Media Lab Sharing and the social aspects of creativity as important parts of the philosophy OPEN ScratchGPIO2 (not Scratch)

35 Scratch basics: scratch.mit.edu

36 Scratch exercise Create a program using ScratchGPIO2 that will convert keystrokes into sprite action, sound and LED signals Open the following sample project (File/Open): 3_led_test.sb

37 What are you going to build?