Assembly instructions for original board

These instructions are for assembling the original version of the shield that is used in the video demo on my Tindie store. These boards can be identified by the fact that they have no branding or version information on the silk screen.

Here is a rendering of the board:


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

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

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.
  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.

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, simply download this sketch and upload it to the Arduino.

You will need to connect the mic to A1 and a potentiometer to A2 for this sketch to work correctly.



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