ESPHome Automatic 4-Wire PWM (5-24v) Fan controller with Alarm.

Using a DALLAS temperature sensor and a threshold Slider, the speed of the Fan is automatically controlled from 0 to 100%. Making it ideal for ventilating / cooling your projects. I.E. Holiday Lights controller enclosure, Media Cabinet units and many more.

With an on-board regulator to power the D1 Mini, this project is ready to control 5,12 or 24 Volt fans without modification
(just make sure you power this project with the same voltage your fan uses).

ESPHome 2024.6.0/1 Update notice:

If you are having problems with board resetting or DALLAS temperature after adding the one_wire: Breaking Change. ssieb has got a fix for you. Please add this External Component to your YAML:

external_components:
  - source:
      type: git
      url: https://github.com/ssieb/esphome
      ref: onewire
    components: [ gpio ]
    refresh: 1min

I have also added it to the Yaml Files.
Note: This has now been "fixed" in ESPHome 2024.6.2 and therefore no longer required.