homeassistant

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Home Assistant is open source home automation that puts local control and privacy first. Powered by a worldwide community of tinkerers and DIY enthusiasts. Perfect to run on a Raspberry Pi or a local server. Available for free at home-assistant.io

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Only Sensor (5, 4, 8-AQ, and 2-TH): The only DIY home automation sensor you'll ever need (lemmy-ui.nowsci.com:33443)

submitted 2 weeks ago by [email protected] to c/homeassistant

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Hey all,

A couple of weeks ago I posted my 3D printable pegboard organizers, and today I’m releasing the Only Sensor line of home automation sensors.

Fully free and open, complete with wiring diagrams, cases, component bill of materials, and instructions for assembly.

You source and build them yourself, with acquisition costs ranging from $2-$35 to build, and options for:

mmWave presence
PIR motion detection
Temperature
Humidity
LUX
PM <10µm AQI
PM <2.5µm AQI
PM <1µm AQI
NOX
VOC

All integrate with Home Assistant via ESPHome.

All the details can be found at: https://nowsci.com/only-sensor/

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[–] [email protected] 13 points 2 weeks ago (6 children)

Very nice.

It's missing CO2, but those are expensive so that's understandable. If you need one of those, I think https://www.airgradient.com/ is a great choice.

[–] [email protected] 5 points 2 weeks ago (5 children)

I've had another user say the same thing, so I've considered investigating CO2. What's the rationale to you for wanting it?

[–] [email protected] 14 points 2 weeks ago (2 children)

Not speaking for Mr Lemon, but for me CO2 levels are an interesting metric to trigger my air exchanger / HVAC fan combo for in a given zone, since it indicates stale air in general.