Part 1: Turn on/off light with a script on the pi

• relay
• transistor
• briefly explain the different raspberry pi pins (gpio vs static voltage out pins) and why we need the transistor.
• We want to show that:
  • it's easy to use physical devices
• Status: Relay can be controlled by pi, script has been commited (run gpio_part_1.py)

Part 2a: Build a (not really restful) server (to control lamp)

• We want to show that:
  • it easy to build an API
  • e.g. /myserver/lamp/on /myserver/lamp/off

Status: Relay can be controlled by on/off commands (run gpio_part_2.py)

Part 2b: Build small web app to exercise api properly

• We want to show that:
  • it's easy to build a backend
  • it is easy to build a little app
• Status: Added simple front end (on/off buttons). Is currenly in pull request but as soon as this has been merged in it is done.

Part 3: Get sensor data from the pi

• Mention that lots of different protocols are supported by the pi: 1-wire, i2c. For all of them there is lots of information online.
• We will not bother with recording the values into a db but can mention sqlite as an easy way to do so.
• We want to show that:
  • you can use input data from sensors
• Status: We can use gpio_part_4.py to get sensor readings from a dummy sensor or the real thing. No shiny front end yet.

Part 4: Closing the control loop

• We want to show:
  • we can use the sensor data to control an actuator
• Have a front end where you can enter a set point. Dip the sensor in ice water and see the lamp turn on.

Part 5: 'Listen' to tweets to turn on/off the heater/lamp

• people tweet on/off
• average on the last 10 tweet
• We want to show that:
  • Everything is awesome!
• Status: Twitter voting functionality has been added in gpio_part_5.py but no shiny front end is available yet.

more interesting things to mention: GPIO zero