Fan Controler

Shematic to conrol a Fan with the Raspberry Pi.

Circuit

To build the Circut you need a 10k Pull-Down Resistor, a 1.6k Base Resistor for the Transistor, a Transistor and a Diode.

For this Setup you need:

• a RPi 4
• tmp102 Temperature Sensor
• 1x 1.6k Ohm Resistor
• 1x 10k Ohm Resistor
• 1 BC357 Transistor
• 1 Diode (I think it doesn't really matter which one, the current is very low)
• 1x 12V Fan
• 1x 12V Power Supply

Install

You need the following Python packages:

• Flask
• GPIO for RPi

Or you can use a Docker Container with the run-contrainer.sh Script.

Setup

Configure the ports in the App.py File or inside the run-container.sh script to the ports you need for your service.

To run the Service, start App.py using python3 App.py. I recommend running this servie with Docker or nohup.

Docker Usage

To run the Fan Control with Docker you can use the pre cooked script build-contrainer.sh. It will run the Dockerfile and create an Image for you. Then just use the pre cooked scrpit run-contrainer.sh and start it. Maybe you should lookup both scripts if you want to use different ports!