Very rough demo of AWS IoT/ Johnny Five/ One Wire Bus on the Raspberry Pi

Overview

Runs on Raspberry Pi with camera board mounted on pan/tilt, with connected DS18b20 One Wire temperature sensor, button and LED

Can remotely control camera pan/tilt, take photos and upload them to S3 Publishes temperature and status of button

# Using Debian, as root
curl -sL https://deb.nodesource.com/setup_4.x | bash -
apt-get install -y nodejs

Enable the camera and One Wire in raspberry pi settings and reboot

Connect LED/ buttons/ One Wire temperature sensor to appropriate GPIO pins as per definitions in index.js (See http://www.modmypi.com/blog/ds18b20-one-wire-digital-temperature-sensor-and-the-raspberry-pi for details about connecting one wire temperature sensor and verifying it is working)

Create a "thing" in AWS IoT console, and download credential files to your device

Load kernel modules for one wire bus

sudo modprobe wire
sudo modprobe w1-gpio
sudo modprobe w1-therm

Export your AWS credentials for the image upload

export AWS_ACCESS_KEY_ID='AKID'
export AWS_SECRET_ACCESS_KEY='SECRET'

Edit AWS S3 bucket name/ AWS IoT details/path to credentials files in index.js

npm install
node index.js

From the AWA IoT console, you can then subscribe to the topics "button" and "temperature"

Publishing to the topic camera_shutter takes a photo (must send an empty JSON object as payload)

Publishing to the topic camera_aim with e.g body {"x" : 55, "y": 180} will set the positions of the pan/tilt servos to point the camera

Pressing the button will toggle the LED status and publish message indicating the button status

Files in common and device from AWS IoT SDK: https://github.com/aws/aws-iot-device-sdk-js