[4 Singing Motors] Koi No Tenshi Mai Orite [HD]

Posted on 2011-11-14 at 02:51 in Music, Videos by Robbi-985.

Now there are 4 motors singing together! Perhaps this is an early Christmas video…? It was originally just going to be a test, but I decided to upload a proper video of it. Still, the sound recording is experimental. I want to find a way that doesn’t hear a thump when a DC motor starts and stops spinning.

The music was used in the Christmas special of the anime Love Hina, and is originally sung by Yui Horie and Yukari Tamura (“Yamato Nadeshiko”).

[Watch in HD]

My laptop runs a program of mine that plays a MIDI file, and sends info about certain notes to an Arduino. The Arduino then shows info on an LCD, switches the 2 stepper motors via 8 MOSFETs, and passes on info for the 2 DC motors to a separate motor speed controller (Sabertooth 2X5), which controls those 2 motors. I think these DC motors are much more suited to the higher notes of a singing voice than the stepper motors are. Likewise, the steppers are certainly better for bass notes. Together, they make a team. =D

The stepper motors and DC motors are running from separate power supplies – 12V for steppers, 15V for DC motors – as I haven’t found a reliable way to compensate for the drop in voltage that the stepper motors cause when they run (this causes the DC motors to slow down a little).

More info is in the video! =)


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