Assembly Instructions

These instructions are for the assembling the Ultimate Voice Changer Arduino Shield version 1.0.1 or earlier.

First, here is a rendering of the board layout, which is easier to read then the board itself if your eyesight is anything like mine.


The kit should include the following components in addition to the board:

  • MCP3208 IC
  • MCP4921 IC
  • Audio jack
  • Terminal Block
  • 330 ohm Resistor
  • 1K Resistor
  • 1.5K Resistor
  • 0.1uF Capacitor
  • 10uF Electrolytic capacitor
  • LED
  • Breakaway headers

Here is a photo of an assembled board that you can use as a guide when assembling yours. Please note that the photo is of the 1.0.0 version of the board, which had slightly different placement of some components. An updated photo is coming soon.


The board is pretty simple to assemble but there are some things to watch out for:

  1. The MCP4921 and MCP3208 must be placed in the correct orientation! The board has a square solder pad for pin 1 and is also marked with a ‘*’ symbol. Use the above photo as a guide when placing these components.
  2. The electrolytic capacitor (the large blue one) must be inserted with the correct polarity. The longer lead must be soldered to the square pad.
  3. The LED must also be inserted with the correct polarity. The board shows one flat side to the LED and this should match the flat side on the LED itself.
  4. You will need to check the resistors with a multimeter to make sure the correct value resistors are being used in each location. Alternatively you can read the color codes on the resistor to determine the value but I highly recommend buying a basic multimeter if you don’t already have one.

If you have any questions at all please post a comment here, connect with me on Google+, or contact me via my Tindie store.

I recommend using breakaway headers on the A1 through A8 ADC breakout pads. There is no need to put headers on all of them unless you really think you need them all.

Once you have the board assembled, install the official Arduino Library (available from the downloads page) and upload one of the example sketches.

You will need to connect the mic to A1 and a potentiometer to A2 for most of the sketches to work correctly.