user29222: I am building a quadcopter with this schematic:

It works very good but i have the pins on 3,5,6,9 = PWM pins. Is it possible to use "regular" pins instead? I will add more modules later on so i will most likely run out of PWM pins. 
I could of course try it right now but i want to ask first so i could potentially avoid to destroy any items!

user19867: No, you need to use PWM in order to control the ESCs which, in turn, control the motors. If you need more PWMs you might add daugtherboard based on other ICs which might provide additional PWM outputs via I2C or serial interface.
In some non critical conditions (ESCs are critical for a quadcopter) you can simulate PWM by switching a plain digital pin HIGH and LOW very quickly, but that is not as reliable as using hardware PWM.

29222: <p>I am building a quadcopter with this schematic:
<a href="https://i.stack.imgur.com/L2X0W.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/L2X0W.png" alt="enter image description here"></a></p>

<p>It works very good but i have the pins on 3,5,6,9 = PWM pins. Is it possible to use "regular" pins instead? I will add more modules later on so i will most likely run out of PWM pins. </p>

<p>I could of course try it right now but i want to ask first so i could potentially avoid to destroy any items!</p>
 19867: <p>No, you need to use PWM in order to control the ESCs which, in turn, control the motors. If you need more PWMs you might add daugtherboard based on other ICs which might provide additional PWM outputs via I2C or serial interface.</p>

<p>In some non critical conditions (ESCs <strong>are</strong> critical for a quadcopter) you can simulate PWM by switching a plain digital pin HIGH and LOW very quickly, but that is not as reliable as using hardware PWM.</p>
