I am trying to make a RGB controller that I can connect to a 3-4 pin computer fan port. I want to make the RGB Led able to connect to the controller but I need the controller able to connect to the computer. I am not sure how to accomplish this and I have found nothing online that will help me. How would I achieve this and how would I make the controller?
Example of How I would like is the Thermaltake Riing fan controller, of course minus the fans.
Thank you.
What are the signals like on the computer fan port? What kind of 'conditioning' do they need to stay in 0/5V range for an Arduino to read them, and then control an RGB LED?
The signal from the PC on the control pin of a 4-pin fan could be 5volt ~25kHz PWM.
Connect a low pass filter with a 10k resistor and a 10-100uF capacitor to that pin, and monitor voltage on the cap with a DMM when the PC is cold and working hard.
See what you get before you think of connecting an Arduino.
Leo..