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A comprehensive indoor air quality monitoring system built with ESP32-C3 Super Mini and multiple environmental sensors. This project helps you monitor CO2, temperature, humidity, volatile organic compounds (VOCs), nitrogen oxides (NOx), and particulate matter (PM1.0, PM2.5, PM10) to maintain healthy air quality in your home or office.

Comments (7)

ssuds · 6h ago

Cool project, but I’m curious how this is different from other open source air quality monitoring projects like AirGradient?

benbojangles · 1h ago

This is a DIY board and roughly 150 cheaper than airgradient

wkat4242 · 1h ago

It probably doesn't even need a board, you can just wire all the sensors in a box and solder the cables. Each sensor only has 3 or 4 and so does the display.

But a board is cleaner and they're super cheap to get made in China unless you're shipping to the US I guess lol.

I've built sensor boards like these too. But more with Dallas one wire sensors to measure temperature in different locations of central heating systems.

benbojangles · 53m ago

Wires are chaotic and a point of failure

wkat4242 · 47m ago

True but they do facilitate more flexible placement. I use them a lot for one off projects.

sneak · 11h ago

How does this compare to ESPHome? I understand it can do this job relatively straightforwardly and can pipe the data into either Home Assistant or Prometheus, so as to not reinvent the web interface wheel.

benbojangles · 1h ago

I guess this board setup has more freedom over sensor code control and adjustment, is not limited to local network it can be monitored anywhere. The user could easily setup the board to use esphome too

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Show HN: Live Air Quality Monitor

Comments (7)