Measuring the Sound by Using the Microphone of Circuit Playground

How to make the microphone of the circuit playground can measure the sound?

Supplies

Computer
Circuit playground
USB cable

Download the "library"

https://circuitpython.org/libraries - where we download the "Library"

Choose "adafruit-circuitplaypython-bundle-7.x-mpy-20230307.zip".

Unzip the "Lib"

Go to file and see this!

Unzip the "Lib" (continue)

Click on the left mouse, then pick the 7-zip

Unzip the "Lib" (Continue)

Choose 'Extract to "adafruit-circuitplaypython-bundle-7.x-mpy-20230307" '

Unzip the "Lib" (Continue)

IT'S UNZIPPING!

Unzip the "Lib" (Continue)

Then you got the file that unzip!

Click on the file! Until.......

Move Some File That Necessary to Another "Lib"

Click on "Lib"

Move Some File That Necessary to Another "Lib" (continue)

Then you can see a bunch of file of adafruit.

Move Some File That Necessary to Another "Lib" (Continue)

FOLLOW THE LIST! Then move it to the "lib" of the one called "CIRCUITPY (F:)"

Code for Active the Microphone

https://pastebin.com/XbMubLii

Explain Some Code

“CURVE = 2” influences how reactive the circuit is to sound, the higher the value, the more leds activate to sound

input_ceiling = input_floor + 500 is the code for the max sounds value. When the sound level hits this ceiling all the leds will be lit. To have a lower sound level activate all the leds, lower the value 500

input_floor = normalized_rms(samples) + 10 is the value for “quiet”. When the circuit starts it takes in the sound level and sets that +10 as the quiet level where no leds will be lit. To increase the quiet bar where no leds will be lit, increase +10 as needed