• Put a sonoff zigbee temperature and humidity sensor in every room (€11 per sensor, €66 all in)

    Ooh, I've been meaning to do temp/humidity monitoring in my flat and those look perfect. The original plan was to roll my own wired solution using a Raspberry Pi and DHT22 sensors but this looks much less faff.

    I'm going to order a bunch (plus the bridge) to try them out in various rooms, along with a PIR sensor, door sensor and a switch (not sure why but it might be useful to play with).

    I will still need one wired DS18B20 temp sensor connected to an RPi but that's to go on a single radiator pipe so I can keep track of when the heating has been on, plus the RPi can be used to host the data capture and logging/graphing stuff (no prizes for guessing what).

    Is there a Zigbee (or wifi) CO2 monitor that plays nicely with this stuff?

  • I got two of the pir sensors and love them. I have them set up to control ikea tradfri outlets with lamps plugged into them, one in my living room and one in the nursery, both with identical automations:

    When we’re both home they switch the lamp on when motion is detected from 1 hour before sunset to 1 hour after sunrise, and switch them off 10 minutes after last motion is detected.

    When home is in away mode however I just have the floor lamps to come on an hour before sunset and switch off at 11pm.

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