building-env-monitor

This is the Raspberry Pi Pico and Raspberry Pi 4B part of the Building Environmental Monitoring System IoT project.
The project has been scoped out in the proposal document.

Link to the repo with the Web App part of this project:
https://github.com/grzpiotrowski/building-env-webapp

Video presentation

https://youtu.be/r7cTduhuFsI

Documentation

building-env-monitor docs

System architecture

Hardware

RPi Pico: Temperature and Humidity Unit

Here are some photos of built prototypes:

Resources

• Fritzing - for designing circuits
  https://fritzing.org/

• How to Safely Store API keys in Python
  https://python.plainenglish.io/how-to-safely-store-your-api-keys-in-python-1dc5aadf93f9

• Paho Python - MQTT Client Library Encyclopedia
  https://www.hivemq.com/blog/mqtt-client-library-paho-python/

Raspberry Pi Pico

• Getting started with Raspberry Pi Pico
  https://projects.raspberrypi.org/en/projects/getting-started-with-the-pico/0

• Raspberry Pi Pico Pinout
  https://datasheets.raspberrypi.com/pico/Pico-R3-A4-Pinout.pdf

• MicroPython - DHT11
  https://docs.micropython.org/en/latest/index.html
  https://docs.micropython.org/en/latest/esp8266/tutorial/dht.html?highlight=dht11

• Bluetooth Programming with Python 3
  https://blog.kevindoran.co/bluetooth-programming-with-python-3/

• Sockets
  https://docs.python.org/3/library/socket.html

Raspberry Pi 4B

• How to Manage Bluetooth Devices on Linux Using bluetoothctl
  https://www.makeuseof.com/manage-bluetooth-linux-with-bluetoothctl/

• PyBluez BluetoothSocket
  https://pybluez.readthedocs.io/en/latest/api/bluetooth_socket.html

SenseHat

• SenseHat temperature correction
  https://github.com/initialstate/wunderground-sensehat/wiki/Part-3.-Sense-HAT-Temperature-Correction

Known errors

In /raspberrypi/main.py: Error after one of the devices times out and the data builds up on the serial connection and there is more than one JSON in the sensorData.