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Sound Amplitude Scrolling Color Matrix

Last Updated: 8/14/18

This module utilizes an Adafruit Bicolor LED Square Pixel Matrix with I2C Backpack and an Adafruit Microphone. It introduces how to download libraries for the LED Backpack and how to use it to display a scrolling bar graph of microphone input amplitude. This will effectively allow students to visualize sound intensity over time on the LED Matrix display.


The presentation material and the code can be downloaded at Sound Amplitude Scrolling Color Matrix.

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