DEPRECATED

The Skygear IoT plugins only works with Skygear v0, but not in latest v1.

Skygear Working Example on Raspberry Pi

This is a simple Raspberry Pi setup demonstrating the usage of Skygear JS SDK in Raspberry Pi.

This demo project demonstrates the followings:

• register the active device on Skygear server
• send tempurature and other Raspberry Pi live information to the server periodically
• fetch recent records from Skygear server

Firstly please follow the installation guide on raspberrypi.org. We assume you would have a clean Raspbian installed on your pi device.

Setup the Raspberry Pi to run nodejs

1. Find your Raspberry Pi IP at your router, or follow the instruction for scaning your subnet: https://www.raspberrypi.org/documentation/remote-access/ip-address.md

   Use nmap to scan IPs on your network. You may have to use sudo to get device info sudo nmap -sP 192.168.0.0/22

   result:

   Host is up (0.0064s latency).
   MAC Address: B8:XX:XX:XX:XX:9X (Raspberry Pi Foundation)
   Nmap scan report for 192.168.2.XXX

2. ssh to the Raspberry Pi, ssh pi@192.168.x.x default password: raspberry

   • To change your password, use command passwd. For more detailed instruction, please follow the instruction here: https://www.raspberrypi.org/documentation/linux/usage/users.md

3. Update the node environment:

   • curl -sL https://deb.nodesource.com/setup_6.x | sudo -E bash -
   • sudo apt-get install nodejs

4. Check your node installation by runing node -v, it should show 6.x. You may also check your npm version by runing npm -v.

Load this demo project into your Raspberry Pi

This project includes a simple health report of the Raspberry Pi to Skygear. It also includes a command to list out the latest health data of the Raspberry Pi.

1. cd /home/pi/

2. Clone the project

   • git clone https://github.com/skygear-demo/raspberrypi-example.git

3. Go to the project directory

   • cd raspberrypi-example

4. Install the required deps for this project

   • npm install

5. Specify environment variables required by this demo app. A script is provided to generate the skygear.env file needed. Checkout SKYGEAR_API and SKYGEAR_ENDPOINT at https://portal.skygear.io

   • Run ./skygear.sh gen SKYGEAR_ENDPOINT SKYGEAR_API
   • Skygear is a user based system, you can register your raspberrypi as a normal user to interact with Skygear. We suggest to use Serial No. and Mac address as the username and password respectively. The script is doing this as a showcase.
   • You could use other system identifers such as IPv6 Address as well. The principle is to have a tuple that could identify your device at Skygear.

6. After the value is edited, copy skygear.shto /etc/profile.d/skygear.sh. Run . /etc/profile.d/skygear.sh to activate the environment variables for your current session.

7. Install the health check service as system services,

   sudo cp skygear-health.service /etc/systemd/system/skygear-health.service
   sudo systemctl daemon-reload
   sudo systemctl start skygear-health
   sudo systemctl enable skygear-health

8. Check the log by sudo journalctl --follow -u skygear-health

9. Run ./query.js to query and display the recent health data from Skygear.