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Raspberry Pi Ben Nuttall Raspberry Pi Foundation UK Charity 1129409

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Raspberry Pi ● Credit card sized computer ● €32 ● Made in the UK ● 6 million sold

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Raspberry Pi Community

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Raspberry Jam

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Raspberry Pi Setup

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What do I need? ● USB mouse ● USB keyboard ● USB power supply ● Monitor or TV ● HDMI cable ● Micro SD card

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Optional extras ● Case ● Ethernet cable ● USB WiFi dongle ● Camera module ● USB Bluetooth dongle ● Speakers or headphones

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The SD Card ● This is your hard drive – Operating system – Files + programs

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Getting started ● Insert SD card ● Connect mouse & keyboard ● Connect HDMI cable ● Connect power supply

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Scratch ● Drag & drop block interface to programming ● Logic ● Computational thinking ● Easy to make games ● Impossible to create a program that fails to run! ● Recommended for young children

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Sonic Pi

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Python ● Powerful extensible programming language ● Easy to read and write ● Make software, games, GUIs, websites, robots and more ● Ideal for physical computing ● Extensive library of additional modules for Raspberry Pi hardware ● Recommended for education

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Minecraft: Pi Edition ● Free version of Minecraft on Raspberry Pi ● Python programming interface ● Learn Python by building things and making games in Minecraft ● Creative computing

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Mathematica ● Expensive proprietary software – free on Raspberry Pi ● Powerful scientific programming

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Physical computing ● Flashy lights ● Motors & robots ● Photo & video ● Sensors ● Internet of Things ● Engaging and empowering

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GPIO Pins – General Purpose Input/Output rasp.io

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Python library - RPi.GPIO ● Included in Raspbian ● Features: – Configure pins as input/output – Read inputs (high/low) – Set outputs (high/low) – Wait for edge (wait for input to go high/low) – Pin event detection (callback on input pin change)

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Flash an LED ● “Hello world” program of physical computing

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3V3 = always on

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GPIO = user controllable

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Flash LED with Python from RPi import GPIO from time import sleep GPIO.setmode(GPIO.BCM) led = 2 GPIO.setup(led, GPIO.OUT) while True: GPIO.output(led, True) sleep(1) GPIO.output(led, False) sleep(1)

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Traffic Lights green.on() yellow.off() red.off() sleep(10)

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Traffic Lights green.off() yellow.on() sleep(1)

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Traffic Lights yellow.off() red.on() sleep(10)

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Traffic Lights yellow.on() sleep(1)

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Traffic Lights green.on() yellow.off() red.off()

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Pi in the Sky

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The sky is the limit...

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...or is it?

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Astro Pi

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Sense HAT ● 8x8 RGB LED matrix ● Mini joystick ● Gyroscope ● Accelerometer ● Magnetometer ● Temperature sensor ● Barometric pressure sensor ● Humidity sensor

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Raspberry Pi Ben Nuttall Raspberry Pi Foundation UK Charity 1129409