I will disclose how to make a handling program in this article that analyses sound on your device and sends data to an Arduino that controls an LED matrix to illustrate the spectrum analysis.
I will disclose where to purchase supplies, clarify the proper coding and wiring and incorporate example applications that can be adjusted.
Step 1: Required Materials
1) An Arduino
2) LED Matrix (I use a 32×16 bicolor matrix, but any matrix should work)
3) A driver chip if your LED matrix doesn’t have them integrated, I will be explaining this in more depth.
Required Software:
1) Arduino IDE
2) Processing IDE
Step 2: Wiring
Step 3: Driver Chips
For a 8×8 matrix, I would recommend getting a MAX7219. This driver chip can handle a 8×8 matrix, or 8, 7-Segment display and just use 4 pins plus a +5V and GND. The MAX7219 can likewise be daisy affixed to another 9 drivers. There are other driver chips accessible, yet the MAX7219 has an Arduino library in presence which makes coding simpler for amateurs.
Keep Reading:-Audio Spectrum Analyzer
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