Project repository for Internet of Things course

This repository contains files and source code for a weather station project done in course Internet of Things at university of Oulu.

Contents

Listing of folders and their contents

• /lib - Libraries needed for Pico to run the weather station
• /src - Micropython source code for Pico
• /web - Services that enable the web interface and backend services to process sensor data

Architecture diagram

Configuration setup for Pico

NOTE: You need to use this firmware for the Pico in order to get the SSL working correctly

1. Copy the config.template.py file to config.py:

   copy config.template.py config.py

2. Setup HiveMQ Cloud account: https://console.hivemq.cloud/

   • Create new account and cluster
   • Go to Access Management and add new credentials
     • Set permission to PUBLISH_SUBSCRIBE
   • Go to Overview and copy the MQTT broker URL
   • Go to Web Client tab and connect to the MQTT broker
   • Add Topic Subscriptions
     • sensors/temperature_in
     • sensors/temperature_out

3. Update the config.py to reflect your personal configurations.

   ssid = ''  # WiFi name
   pwd = ''   # WiFi password
   MQTT_BROKER = ''  # MQTT broker URL
   MQTT_PORT = 8883  # Default MQTT port
   MQTT_USER = ''  # MQTT username
   MQTT_PWD = ''   # MQTT password
   

4. Upload the files to Pico.

• /lib folder
• main.py
• config.py

5. Run main.py with Thonny IDE or other MicroPython IDE.