OpenWest 2014/Raspberry Pi

"Unleash the Raspberry Pi Through Physical Computing"

by Kevin Sidwar

"Conference speakers aren't the community elite, they are just people who build stuff and like to talk about it. Anyone can do it." -- Tweet

Unleash The Raspberry Pi Through Physical Computing - Skillshare - http://skl.sh/1boHmFo

• 3 hours of videos and lessons

Physical Computing - interacting digitally with the analog world.

Internet of Things is a subset of Physical Computing.

Why the Pi? Huge ecosystem and a ton of resources online.

Buy them through "newark" for $35 without the $5 markup elsewhere (although you get hit with shipping)

The voltages are safer than licking a 9V battery.

Requires very little EE knowledge

SPI - communicating with other devices like other micro controllers

I2C - Inter-Integrated Circuit

Serial

Cool projects:

• RFID reader

Keep pins straight: (keep track of the pins, don't fry your Pi)

• Raspberry Leaf - good printout to keep track of pin outs
• Pi cobbler is another good way
• Verify twice, connect once
• Pins are 3.3V not 5V!
• Use isolated jumper wires (don't short out the pins)
• Don't touch header while powered on

GPIO - General Input / Output

Write Example:

import RPi.GPIO as GPIO
GPIO.setmode(GPIO.BOARD)
GPIO.setup(12, GPIO.OUT)  # (OUT/HIGH/LOW)
GPIO.cleanup()

Read Example:

???

I2C Example:

import smbus
i2c = smbus.smbus??
temp = bus.read_word_data(0x48, 0)

SPI Code example

???

Twython - twitter python client

Twilio - send/receive text/phone

Demo - http://twitter.com/PiHomeMonitor

Source code for this presentation - http://github.com/sidwarkd/openwest_demo