When building Arduino projects for beginners, you'll usually need both input and output sensors. However, you can come across some simple projects like the Blink example that only require an LED ...

For example, to get 31-kHz PWM, there’s a way to fiddle with ... Next is a quick reference card that shows the correct usage of the timers on the Arduino that control PWM outputs (assume an Atmega328 ...

Maybe you can do better. Maybe it's time to check out Arduino. The word Arduino may conjure up an image of a wide-mouthed geek huddled over a work table, but its simplicity makes it an entry-point ...