Physical Computing

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Physical Computing

Arduino, Raspberry Pi, Sensors, Controls…

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Arduino

Atmel AVR, ARM 1.8-12V 1-84MHz (ATtiny,

ATmega…) Arduino IDE + libraries I2C, SPI, PWM, UART,

USB host $12-60

Arduino Trinket

Arduino YÚN

bildr.org

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Raspberry Pi

Broadcom SoC 700-900 MHz, 512GB

RAM 5V, ~1A Linux (Arch, Debian,

Chromium), Python Integrated A/V out,

Ethernet, GPIO $35 RasPi Camera Module

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Beagle Bone Black

ARM Cortex A8 1GHz, 512GB RAM 5V, ~1A Linux (Angstrom,

Android, Ubuntu), Python

Integrated A/V out, Ethernet, GPIO, ADC, DAC

$45

http://learn.adafruit.com

General Purpose Input Output Digital read/write 0-5V, 0-3.3V on/off switching, bit-banging

GPIO?

Analog to Digital Converter 0-5V, 0-3.3V Voltage reading 8-bit (256 levels or resolution), 10-bit,

16-bit, etc 0…0V, 127…2.5V, 255…5v

ADC?

Digital to Analog Converter Pulse Width Modulation (PWM) 0-5V, 0-3.3V Fast on/off switching, fading

DAC?

https://www.sparkfun.com/products/11282

Barometric Pressure Sensor

BMP085 Breakout$19.95

Barometric Pressure Sensor BMP085

$8.95

Humidity Sensor - HIH-4030 Breakout

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Wired Communication

SPI I2C USI USB Serial TWI CAN BUS UART RS-232 Ethernet

3.3V and 5V don’t mesh:https://www.sparkfun.com/products/8745

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Wireless Communication

WiFi Bluetooth Xbee / ZigBee Wireless USB/RS-232 IrDA 315 & 434 MHz radio

Tend to drain powerMost require Client/Server relationship

50 mA < 5A

50 mA < 5A

Microcontroller Motor, Valve, Relay, Light

50 mA < 5A

Microcontroller Motor, Valve, Relay, Light

(Current Source) (Current Sink)

50 mA < 5A

Microcontroller Motor, Valve, Relay, Light

(Current Source) (Current Sink)

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Higher Loads

TIP Darlington Transistors

TIP120: 5A cont , 8A (trans) NPN = Normally Open

TIP125: -5A cont, -8A(trans) PNP = Normally Closed

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Inductive Loads

SolenoidsMotorsMechanical Relays (non-SSR)

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Human Interaction

2012 Senior Design Project

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Human Interaction

2012 Senior Design Project

• Human interface• Graphical Touchscreen• Customizable

• Ultra low power

• Wi-Fi integration• Built-in Tutorial

• Human interface• Graphical Touchscreen• Customizable

• Ultra low power

• Wi-Fi integration• Built-in Tutorial

• Human interface• Graphical Touchscreen• Customizable

• Ultra low power

• Wi-Fi integration• Built-in Tutorial

http://shop.oreilly.com/category/deals/arduino-owo.do?code=WKARD&cmp=tw-make-dotw-arduino

http://www.adafruit.com/blog/2013/01/23/adafruits-raspberry-pi-lesson-10-stepper-motors-raspberry_pi-raspberrypi/