Another quick hack. I purchased a voice changer because I was looking for something cheap that could be hacked into an voice input device. Basically I wanted to animate a skull when I spoke. Added bonus, now the skull puppet would also have a scary voice.
I am going to show you how to hack a voice changer to use as a digital input for an Arduino project. I leave the output or reaction up to you.

Step 1: What you'll need

I am assuming that you have a little bit of electronics and soldering experience. I will also assume that you have some familiarity with Arduino.

You will need
  •  A voice changer module. (8$ at Wallymart)
  •  A 741 opamp ic.
  • an LED of choice (not necessary, but provides a cute little visual input that things are working, and will provide clues as to how to change the circuit into a LED light organ.)
  • a resistor for your led (220 ohms - 1 k will work alright, you only need this if you are using the LED)
  • some hookup wire.


  • Soldering iron and solder
  • wire snips
Could I use the arduino to add in a new distortion for the voice?
Great innovation that works on arduino because it can understand the input language and give output in better way.<br><a href="http://www.jayconsystems.com" rel="nofollow">Jaycon</a>
Big place, usually has a Mark Donald's restaurant inside.
I don't like advertising, is it poor Instructables form to use the wrong names? I figured it would be clear enough. Sorry for the confusion.
I'm joking around but it may be confusing to others.

About This Instructable


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Bio: Dad, maker, dreamer, hacker, painter.
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