IoT Engineering

Hands-on of lesson 6

For slides and example code, see lesson 6

Note: Do not work on this repository right away.
Check existing forks to find the specific repository for your class.

a) Bluetooth LE, 20'

• Run the previous Bluetooth LE examples on the Pi.
• Make sure node, npm and noble are all installed.
  (Install noble locally, in ~/fhnw-iot/06/Nodejs)
• Use the .js link on each page or check the main repo.
• To run a Node.js program my.js, type $ node my.js
• Use the nRF5280 HRM BLE Peripheral for testing.

b) Web client & service, 20'

• Run the previous Web client and service examples.
• Use the .js link on each page or check the main repo.
• To display the IP address on the Pi, type: $ ifconfig
• To run a Node.js program my.js, type: $ node my.js
• Then access http://LOCAL_IP:8080/ or https://LOCAL_IP:4443/

c) Create a systemd service, 5'

• Create a systemd service as shown on previous slides.
• Instead of my.js use one of the Web server examples.
• Reboot the Raspberry Pi device with $ sudo reboot
• Make sure the Web service still runs after the reboot.

d) Remote access, 10'

• Install a Ngrok, Pagekite or Yaler relay service daemon.
• Configure it to publish the secure Node.js Web service.
• Submit the URL to access your Web service via Slack.

e) Challenge, 1h+

• Choose one of the BLE to Wi-Fi gateway use cases.
• Implement it, combining the above building blocks.
• If the Pi is a Web Server, expose it via a relay service.
• Or, if the Pi is a client, send data to an IoT platform.
  (Depending on the use case you chose.)