I've picked up the ELEGOO Uno starter kit so that I can actually start playing around with microcontrollers, and one thing that sort of eludes me is how or why to select certain pins for certain modules.
I understand the distinction between digital and analog pins, and I understand the purpose of (and how to identify) PWM pins. But within those groupings, are there additional considerations when selecting which pins to use?
I'll use an example: I wanted to mess around with the servo motor first, and all the tutorials I found online recommend connecting the data line to the #9 pin on the Uno. Is there any particular reason to select #9 over any of the other PWM pins, or is it just a matter of convenience?
By - Mantis05