How to control fan speed with Arduino?

How to control fan speed with Arduino?

About this project

  1. Step 1: Figure out the pins of the fan connector. You need a fan with a Plus (red) pin, a Minus (black) pin and a Speed pin.
  2. Step 2: Connect the Arduino to the fan.
  3. Step 3: Code.
  4. Step 4: Control it!

Why do some fans have 3 wires?

The third wire gives your computer a measure of control over that. It reports the speed of the fan back to the computer’s processors, which allows the motherboard to control the speed of the fan by raising the voltage – and speeding the fan – when the extra cooling is required, and lowering it when it’s not needed.

Can you control DC fan speeds?

If you want to vary the speed of DC fans, the only option is to vary the input DC supply. The DC power supply can be reduced below 12 V for lower speeds. There are still limitations in the percentage decrease in the speed of DC fans.

How do I control fan speed with triac?

A reliable speed control of a ceiling fan AC motor can be accomplished by combining the MC9RS08KA2 and the phase angle control using a TRIAC. A benefit of this approach is avoiding non-linearity that is present if using only the TRIAC.

How does PWM control fan speed?

PWM, in brief, uses the relative width of pulses in a train of on-off pulses to adjust the level of power applied to the motor. A 2-wire fan is controlled by adjusting either the dc voltage or pulse width in low-frequency PWM. However, with only two wires, a tach signal is not readily available.

Can I plug a 3 pin fan into a 4 pin?

1 Answer. Apparently a 3-pin fan can plug directly into a 4-pin socket. Two of the pins provide power to the fan, the 3rd provides an RPM pulse to the motherboard to read the speed. The 4th pin is for PWM speed control.

How to make DC motor speed control using Arduino Uno?

So, let’s get started with DC Motor Speed Control using Arduino UNO: In this tutorial we will learn that how to make an algorithm for DC Motor Speed Control using Arduino UNO. Speed control of any motor is always done y Pulse Width Modulation, abbreviated as PWM.

What kind of fan control do I Need?

A controller switch system that can be used for both fans and LED light. . A basic fan control that fits onto the wall switch and provides settings for four speeds. A basic fan control that fits onto the wall switch and provides settings for four speeds. .

Can You PWM a 3 pin PC fan with an Arduino?

A question came up on IRC regarding how to PWM a 3-pin PC fan with an Arduino using analogWrite (). Controlling the fan was seemingly straightforward. The problem was that the hall effect sensor, or TACH signal, was incredibly noisy. The noise made it impossible to measure the fan’s rotation.

How to make a DC motor speed control?

In this tutorial we will learn that how to make an algorithm for DC Motor Speed Control using Arduino UNO. Speed control of any motor is always done y Pulse Width Modulation, abbreviated as PWM. PWM pulse can be generated using Arduino and L298 Enable Pin is used to get that PWM pulse and then it controls the motor speed accordingly.