What to do then don't have enough gpio pins | Sensors ideas for rooms

Hello ,

Am in progress on reworking my flat. Main point of this project its to centralize all wires into one place and make every light , and socket controlled by home assistant. And every light box have two ethernet cat 5e cables.

Every room will have :

  1. Temt6000
  2. DHT22
  3. Motion sensor
  4. Window sensor
  5. Door sensors

Touch capacitive switches, similar that drzzz used in his videos.

If somebody have any ideas what sensors i can add am open for ideas

The main problem am running into its i dont have enough gpio pins in esp modules ( and i dont want install 10 - 20 modules :confused: ) . I was reading about esphome arduino expansion if understand correctly i can use something like arduino mega to expand my gpio pins but i heard people can’t get it working correcty ? so i was thinking maybe there is any better and easier solution i missing.

Thanks in advance

Look into I2C multiplexors such as MCP23017. Allows you to run something silly like 64 IO’s from the I2C bus. :slight_smile: