Arduino Pwm Fan Control

Control pwm fans with an arduino some basic c programming and a lot of fun.

Arduino pwm fan control.

Many projects that use a temp sensor but never the most simple thing. I found the following diagram that seems to be what i am looking for in order to hook the fan up to the arduino. A question came up on irc regarding how to pwm a 3 pin pc fan with an arduino using analogwrite. The noise made it impossible to measure the fan s rotation.

Beginner full instructions provided 24 154. I had 5 laying around and thought mine as well give it a shot. Controlling the fan was seemingly straightforward. Getting temperature values from a digital or analog temperature sensor on an arduino is fairly simple.

4 wired fan control pwm control a pwm fan with arduino. The circuit utilizes the mode 10 pwm phase correct on timer 1 ocr1a pin 9 and icr1 pin 10. The problem was that the hall effect sensor or tach signal was incredibly noisy. I o pin 9 on the arduino board is directly connected to fan control input and by reading the state of 3 push buttons on pins 2 3 4 different pwm values are sent to the fan.

It then becomes a matter of telling the fan pwm to raise or lower the speed based on the temperature. However i am looking at controlling the fan speed with the arduino via the pwm pins. The ultimate project is to control the fan based on temperature. The arduino throttles the fans using pid logic and drives them through pwm.

Temperature based fan speed control monitoring with arduino. In this post we have described how to design temperature based fan speed control monitoring with arduino and lm35 temperature sensor. The system uses a temperature sensor to control four fans that are driven by an arduino controller. Control the speed of the fan.

I simply want to control a 4 wired fan or maybe several with an arduino board. I am looking at getting 2 80x10mm pwm fans. The microcontroller controls the speed of an electric fan according to the requirement allows dynamic and faster control and the lcd makes the system user friendly. I have been wondering about this project and how to control my 4 pin pwm fans.

The frequency values can be adjusted between 125 hz 8 mhz as well as a variable duty cycle.