IOT Room Sensor

Basics

• An IOT "Cube" / "Brick" that can measure the following information and relay it to the system:
  • At Least:
    • Temperature
    • Humidity
  • Additional Data, But Will Add Some Cost:
    • Carbon Dioxide Concentration
    • Light Level Sensing
    • Nitrogen Dioxide Concentration
    • Ozone Concentration
    • Particulate Matter
    • PIR Based Occupancy Sensing
    • TVOC Concentration
• Some form of basic display would be nice, preferably low power such as a basic LCD screen, labels and Seven Segment Displays / Nine Segment Displays , or an E-Ink Screen
• Leave Smoke Detectors / Carbon Monoxide Detectors as a seperate unit / units?

Off the Shelf Options

• An article by "Make Use Of" Titled "The 7 Best Smart Air Quality Monitors and Sensors for Your Home" (Is There Any Sponsorship Bias?)
• The Bangood Page on Air Quality Monitors (Seems to be 50-150 USD for the "Everything" Units)
• The Bangood Page on Temperature Humidity Monitors (Seems to be 5-30 USD for Temperature + Humidity Sensors)

Existing Open Source Designs

"How to Mechatronics" Design

• A Video by the Youtube Channel "How To Mechatronics" Titled "DIY Air Quality Monitor - PM2.5, CO2, VOC, Ozone, Temp & Hum Arduino Meter"
• The Post on Their Website on the Project
• "AM6 6 In One Air Quality Detector Laser PM2.5 VOC DART Formaldehyde Sensor E-detector with Open Source Serial Command" (Not sure on it, but neat concept/componet?)

Misc

• "Air Meter Making #4: Complete © GPL3+" ( Arduino + ESP32 based)
• Atmospheric Air Analyser MIT (similar as the above, but uses a 3d printed enclosure (and some different sensors?) )