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Microphone Input

A project log for Biological & Environmental Feedback LED Wristband

Wristband that takes in heart rate and music data and creates responsive light show. Share Your Light!

Michael FoxMichael Fox 08/19/2014 at 09:170 Comments

The microphone input is functioning with the help of a simple LM386 circuit. The following link is the link we used for the amplification from the microphone: http://lowvoltage.wordpress.com/2011/05/15/lm386-mic-amp/. This allowed for a larger range of values from the Analog Input. The simple analog read example can be used to test the circuit. After testing the circuit we added the analog input part of the code to our light strip code. The light strip code now presents the viewer with visualizations of two inputs, audio and heart rate.

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