Fan Controller

This is a simple project in development to provide a multi temperature sensor IoT device including a Fan Controller, the focus resides in providing a JSON HTTP interface for scrape and configure remotely.

A example schematic can be viewed here

State of the Project

The projects actual state is a working temperature fancontroller including metrics export in prometheus format.

Features:

• Control a fans speed by temp sensor of your choice
• Up to 8 temperature sensors
• Naming sensors
• Configuration is done over http
• Configuration is saved to flash memory and read on start
• Prometheus metrics export endpoint

Requriements:

• A compatible ESP8266 (i am using the ESP-12E variant)
• DS18B20 Temparatur Sensors
• PWM Controlles FAN (4wire)

Quickstart

Create a src/Credentials.h with your wifi credentials, use src/Credentials.h.tpl

On remote Host:

pio remote agent start

Connect Monitor:

pio remote device monitor -b 115200

Upload Filesystem:

pio remote run -t uploadfs --force-remote

Upload and Flash remote:

pio remote run -t upload --force-remote

Configuration

Check http files at http

Test

To use the http calls provided by the test/ folder you can use vscode extension REST Client and this config under .vscode/settings.json:

{
  "rest-client.environmentVariables": {
    "$shared": {
        "fanControllerHost": "1.2.3.4"
    }
  }
}