Close
0%
0%

7 Band Audio Spectrum Analyzer

This is a simple beginner DIY project with low component count and small budget.

samm928samm928
Following
Liked Like project

Just one more thing

To make the experience fit your profile, pick a username and tell us what interests you.

Pick an awesome username
hackaday.io/
Your profile's URL: hackaday.io/username. Max 25 alphanumeric characters.
Pick a few interests
Projects that share your interests
People that share your interests

We found and based on your interests.

Choose more interests.

OK, I'm done! Skip
Public Chat
Similar projects worth following
2.3k views
2 comments
243 followers
View Gallery
Public Chat
The Arduino Nano and MSGEQ7 will analyze the audio input and break it into 7 different frequencies then displays the bands accordingly on WS2812B LED bars. MSGEQ has a built-in clock generator so there is no need for an external crystal oscillator. I like everything about this project, since is perfect to start learning and playing with FastLED and NeoMatrix features and allows you to explore your imagination. The only limitation on the Nano controller is the small 32K flash memory which is barely enough to load the code. The sketch included with this project however, does have 16 different FastLED patterns and colors that cycles with the Mode button, or automatically changes every 10 seconds to the next pattern. This project is simple enough so that you can try it out on a small breadboard while the PCBs are being fabricated.

Schematic Ver 2.0 with no battery, to use with USB type-C for 5v power and sketch upload.

PCB Layout Ver 2.0 single sided with two mounting holes.

Try using headers to plug in the Nano. It is much easier to swap a new Nano that is already preprogramed with a different Sketch for new colors and patterns.

Schematic for Ver 3.0 with battery and charging circuit .. 

PCB Layout Ver 3.0 with AA battery on top the side and charging circuit on the bottom ..

AA size batteries usually are between 600mAh - 800mAh and don't last very long depending on the LED brightness. You might want to add a 16850 cell in parallel. Added on-off switch and 4 mounting holes.

Remeber The Time.mp4

Running on 4.2V battery and Bluetooth .. also .. https://www.youtube.com/watch?v=NybeTkjHDJE&lc=UgzKvnBz6ssjJFnh4xF4AaABAg

MPEG-4 Video - 18.71 MB - 08/31/2023 at 21:52

Download

Sketch_7_bands_analyzer.zip

Latest SKETCH for 7-Bands analyzer with 16 color pattern presets, and auto-change mode each for 10 seconds intervals.

x-zip-compressed - 8.60 kB - 08/31/2023 at 20:46

Download

Gerber_7 Bands Analyzer Nano with Battery.zip

Gerber Files for Ver 3.0 with battery and 4 mounting holes.

x-zip-compressed - 103.07 kB - 05/15/2023 at 08:12

Download

Expialidocious.mp4

Video clip Sample of Colors & Patterns with Bluetooth for Audio Input and a portable speaker.

MPEG-4 Video - 26.56 MB - 05/15/2023 at 05:45

Download

Spectrum_Analyzer_7_Nano.zip

SKETCH for 20 x 7 Bands (140 LEDs Matrix) with output on Pin2. Works for both Ver.02 and Ver.03 boards.

x-zip-compressed - 8.74 kB - 05/15/2023 at 04:40

Download

View all 6 files

View project log

Enjoy this project?

Share

Discussions

samm928 wrote 05/15/2023 at 06:59 • point

I ran out of room on the smaller version .. Version 3.0 with the battery does have the extra 10k resistor.

  Are you sure? yes | no

vlk wrote 05/15/2023 at 06:06 • point

You should mix signals from both channels R+L, just put second resistor like R1/10k

  Are you sure? yes | no

Similar Projects

An Arduino-based lightsaber with sound effects and an accelerometer
Project Owner Contributor

Lightsaber prop with sound effects

matthias-nigmannMatthias Nigmann

An easter blinking rabbit PCB. A funny project for Easter.
Project Owner Contributor

Easter Rabbit

christosChristos

A Christmas project I made for my then GF who wanted to try soldering :) All files free to download and modify!
Project Owner Contributor

Attiny85, 12 LED heart soldering exercise

janJan

An audio book player based on the DFPlayer Mini module
Project Owner Contributor

ABPlayer Mini - AudioBook Player

accidentalrebelAccidentalRebel

Does this project spark your interest?

Become a member to follow this project and never miss any updates

Going up?

About Us Contact Hackaday.io Give Feedback Terms of Use Privacy Policy Hackaday API

© 2024 Hackaday

Yes, delete it Cancel

Report project as inappropriate

You are about to report the project "7 Band Audio Spectrum Analyzer", please tell us the reason.

Send message

Your application has been submitted.

Remove Member

Are you sure you want to remove yourself as a member for this project?

Project owner will be notified upon removal.