Tiny Arduino Music Visualizer: Maximum blinkenlights, minimum effort!
Here’s an easy-to-build project that really packs a lot of blinkenlight for the effort: a little pocket-size music visualizer we call “Piccolo.”
Set Piccolo next to the telly or some speakers and you’ll see the lights respond to music and sound — lowest notes toward the left end of the graph, highest notes toward the right.
Technically this would be called a “spectrum analyzer,” but as this is not a precision scientific instrument, we’re more comfortable labeling it a “visualizer.” It’s strictly for show.
This intermediate Arduino project shows a clear progression from input to processing and then output in a package that’s appealing and easy for minds to grasp: music and lights. It’s not abstract or “science-y” unless you choose to peel back the layers…
Featured in this guide:
- Adafruit Bicolor LED Square Pixel Matrix with I2C Backpack
- Electret Microphone Amplifier – MAX4466 with Adjustable Gain
- Arduino Uno R3 (Atmega328 – assembled)
- Breadboarding wire bundle
- Half-size Breadboard
Check out the full tutorial here!
Adafruit Bicolor LED Square Pixel Matrix with I2C Backpack: What’s better than a single LED? Lots of LEDs! A fun way to make a small colorful display is to use a 1.2″ Bi-color 8×8 LED Matrix . Matrices like these are ‘multiplexed’ – so to control all the 128 LEDs you need 24 pins. That’s a lot of pins, and there are driver chips like the MAX7219 that can help control a matrix for you but there’s a lot of wiring to set up and they take up a ton of space. Here at Adafruit we feel your pain! After all, wouldn’t it be awesome if you could control a matrix without tons of wiring? That’s where these adorable LED matrix backpacks come in. We have them in three flavors – a mini 8×8, 1.2″ Bi-color 8×8 and a 4-digit 0.56″ 7-segment. They work perfectly with the matrices we stock in the Adafruit shop and make adding a bright little display trivial. It’s called a Bicolor LED, but you can have 3 colors total by turning on the red and green LEDs, which creates yellow. That’s 3 colors for the price of 2! Read More!
March 29th is Arduino Day 2014! Arduino day is “a worldwide event bringing together Arduino people and projects. It’s 24 hours full of events – both official and independent, anywhere around the world – where people interested in Arduino can meet, share their experiences, and learn more.” Adafruit will be celebrating with 24 hours of Arduino posts on our blog as well as a special Saturday night LIVE show with Massimo Banzi, co-founder and CEO of Arduino. Join us Saturday, March 29th at 7 PM EST to celebrate Arduino Day 2014! Be sure to check out our extensive learning system tutorials on Arduino as well as our Arduino blog coverage and products.
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