This is a temperature-based fan controller using PID logic and PWM signals to control PC fans.Ĭheck out my instructable on this project for more info * fancontrol is available under the GNU LGPLv3 License which is available at * Copyright (C) 2017 Matteo Bonora - All Rights Reserved The rest kept its code available in the repository, which follows : I also changed the pins for connecting the display:Īnd includes the modification to display your code in the diaplay. As I can be with a sensor with problems, I am getting the DHT22, according to your design. showing an ambient temperature of 98 Degrees.

I had a DHT11 sensor, but the reading is crazy. Total cost: € 74.00 (if I had to buy all the components on Ebay/Amazon). Cables, screws and other minor components (€ 5.00).One 5V and 12V dual output power supply: You can use 2 separated PSUs or a 12V with a step down converter to 5V (€ 15.00) One LAN cable coupler: to easilly disconnect the main assembly to the display panel (€ 2.50).Three momentary push buttons, 1 is for reset (€ 2.00).One 8 digit 7-segment MAX7219 display module (€ 2.00).One relay board: to switch off the fans when they're not needed (€ 1.50).One Pro Micro: Any ATMega 32u4 powered board should work fine with my code (€ 4.00).Four 120mm PWM fans: I went for Arctic F12 PWM PST because of the ability to stack them in parallel (4x € 8.00).One aluminum panel: cut at 19' in width (€ 3.00).Four 3.6x1cm L shaped PVC profiles (€ 4.00).One acrylic panel: used as the base (€ 1.50).Note: I tried to realize this project with things I had lying in the house, so not everything can be ideal.

Pwm fan controller