Trolls are alive and well, and not just living under a bridge anymore.

One of the things I do for fun is dabble with electronics. And the electronics I dabble with come in the form of things I can control with an Arduino. You can make all sorts of neat stuff with some wire, resistors, servos, LED's, piezo buzzers, etc. You use a program on your computer to program and upload 'sketches' to your arduino board to make it do different things.

I was messing around with my pile of components, making some funky LED designs when I got bored. I was playing with the program and found some pre-compiled programs that were distributed with the Arduino software. They are designed to give you the basics of making circuits.

So, out of a sense of nothing better to do, I loaded sketch one and built it. It was a blinking LED. Number two was adjusting the brightness of an LED with a potentiometer. Three was an RGB LED, and so on. They were all simple, and I didn't learn anything new.

Until I got to number eleven. This was where the started teaching you how to use a simple piezo buzzer. I set up the circuit like they described, and uploaded the sketch and expected to hear the promised 'Twinkle Twinkle Little Star'.

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No. The person who programmed the sketch turns out to be a troll. I did not get the promised 'Twinkle Twinkle Little Star'.

I got Rick-Rolled.

The sketch sent the first 18 notes of 'Never Gonna Give You Up' through the piezo buzzer I had connected to my breadboard.

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Well played anonymous coder, well played.