If you've got an Arduino of any variety, you might have noticed some of the pins on the board have a tilde mark or PWM printed next to them. What is PWM?

Take note: Arduino has its own set default values of modulation frequency for its PWM pins. For pins 3, 9, 10, and 11, it is approximately 488 Hz, and for pins 5 and 6, it is about 977 Hz. Though ...