Fan Control Code for Arduino

This code has been made for controlling Vilpe Eco 220P roof fan
with Arduino UNO (Atmega328P).

• Arduino controls fan with PWM to NPN transistor (fan needs 0-10V level)
• PWM duty is controlled using potentiometer (note: PWM uses Timer2).
• LCD can be used to display the set speed value and the tacho signal
  coming from the fan circuit (actual spinning RPM)

https://www.vilpe.com/product/e220p-o160-500-roof-fan/

See wiring instructions on on Vilpe site.

Made by Visa Hannula, 2021.

This code is provided AS IS and does not promise anything,
USE AT YOUR OWN RISK. You are fully free to copy and modify the code.

If you find errors or implement nice new features let me know. :)