A Youtuber used stepper motors to play theme song is the coolest thing we found on the Internet today. The latest youtube video find comes from a user who goes by cmhiekses, who use stepper motors to play the Mario theme song with a MIDI file. The sound comes entirely from the motors and the MIDI file is composed by the builder.
The final result is the wicket thing I have ever seen. cmhiekses was able to use the “frequency” of the motor to play a complete song. Noted that the frequency here is actually the motor vibrating. The U brackets amplify the sound so that we can hear it better.
Now imagine doing this in a much larger setting. You can visit Choosing a Stepper Motor Power Supply blog article to learn more about stepper motor.