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Aruduino Nano programs Super Mario song onto $1 ATiny85 microprocessor

My son and I demonstrate how the Arduino playtunes library can be used in a music program which is uploaded through an Arduino Nano microcontroller development board onto a $1 ATiny85 microcontroller chip. LEDs are flashed at musical frequencies and then a photvoltaic solar sell converts this light into electricity and then polyphonic sound.