Use arduino PWM signal to drive 555 ic and generate the PWM

Using Arduino General Electronics
1

Hello,

How can i use arduino pwm signal to drive a 555 timer and generate a stronger pwm signal?

See below:

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I want to replace that POT with a arduino pwm signal so i can control "PWM OUT" duty cycle via software. is it possible?

2

How can i use arduino pwm signal to drive a 555 timer and generate a stronger pwm signal?

You forget the 555 timer and just use a transistor on the PWM output to make it able to switch more current. If that is what you mean by making it stronger.

3

i want to boost the PWM frequency to eliminate fan clicking noise.
That setup is what is currently used

4

So change the PWM frequency in software.

You still don’t need the 555 timer.

5

Grumpy_Mike:
So change the PWM frequency in software.
https://www.arduino.cc/en/Tutorial/SecretsOfArduinoPWM

You still don’t need the 555 timer.

Thank you, i will try that fast pwm.

6

Microcontrollers are the new 555 timer.