DuckDuckFedi i want to (ideally) buy or build a weather station.

Franziska

Sensors i need:
- Temperature
- Humidity
- Pressure
- PM 2.5
- PM10
- light level

Optional:
- amount of rain
- CO2

I also want wifi or zigbee connectivity. Must work without internet connection and with home assistant.

Is there anything available to purchase that has all i need? If not, what parts do i want to buy to build one?

Jay16K

@kunsi airgradient ticks almost all the boxes, without light level though: https://www.airgradient.com/outdoor/

Franziska

@Jay16K Yeah, i saw that, though i would really like to have light level

(Maybe i can frickel that)

Russ Garrett

@kunsi the ecowitt stuff is what I have and we also use it for EMF - genuinely good quality and decent value: https://www.ecowitt.com

There's a local Home Assistant integration for it, and there's also a MQTT bridge which is what I use: https://github.com/bachya/ecowitt2mqtt

Jay16K

@kunsi There is also ribbit Network Hardware that might be hackable / expandable as well: https://ribbit-network.github.io/ribbit-network-frog-hardware/

Gina Häußge

@kunsi @russss I run some ecowitt outdoor sensor and that's working well (I use the integration but will check the mqtt bridge - thanks for the hint!). So long haven't splurged on the full weather station, but have been tempted a few times.

Last September I created a gill shield for a cheap Aqara indoor environmental sensor (temperature, humidity, pressure via zigbee), and to my utmost surprise that is still running just fine too.
https://chaos.social/@foosel/115270728916797080

Russ Garrett

@foosel @kunsi the MQTT bridge can emit Home Assistant compatible messages too, so you can use it to do HA and also other stuff.

(I wrote a converter for the MADIS/APRS network so my weather station is on windy.com: https://www.windy.com/station/madis-AV975?51.530,-0.073,11,p:temp)

Jana

@kunsi esphome self build?

Franziska

@russss These all seem to be battery powered, am i seeing that right?

Russ Garrett

@kunsi solar as well - batteries are only used at night and it's *very* efficient. Haven't changed the batteries in mine for nearly 4 years.

Franziska

@russss okay, thanks.

äymm :damnified:

@kunsi there are some guides here: https://sensor.community/en/sensors/ but you‘ll probably need to adjust a bit

Franziska

So far the options seem to be:

- Ecowitt $something (requires gateway)
- Airgradient Outdoor (no light level)
- DIY

I will keep this post updated if i fine more options.

Scarlet

@kunsi If you are against vendor gateway devices, OpenMQTTGateway allegedly supported Ecowitt devices when I was last looking at doing this (their compatibility site seems down right now).

Alex

@scarlet @kunsi rtl_433 supports them too if you don't want to use their gateway, though personally I do just use the gateway without it having internet access and it's fine.