Overview

Colored lights bouncing to the music is a must have for any party. Now you can bring the party to your NeoTrellis M4 Express with the Audio Visualizer and Filter! With realtime Fast Fourier Transform (FFT) frequency spectrum analysis, the music coming into your NeoTrellis STEMMA adapter (from a computer, phone, Walkman, turntable pre-amp, etc.) is converted into colors and lights on the buttons to display the magnitude of the sound in different frequency bands.

Your music then passes through to the TRRS headphone jack on the NeoTrellis so you can listen to it. But that's not all! We've also built in a low pass filter and band pass filter so you can trigger awesome sounding effects at the push of a button!

We'll also build a small circuit with capacitors and resistors to center the incoming audio around the proper voltage for the NeoTrellis M4's analog-to-digital (ADC) converter.

Parts

Adafruit NeoTrellis M4 with Enclosure and Buttons Kit Pack

PRODUCT ID: 4020
So you've got a cool/witty name for your band, a Soundcloud account, a 3D-printed Daft Punk...
$59.95
IN STOCK

Adafruit NeoTrellis M4 Mainboard - featuring SAMD51

PRODUCT ID: 3938
We got a big ol' blender and tossed in an ItsyBitsy M4, two NeoTrellis boards and an electret mic amp - turned on the 'mix' button and out came the NeoTrellis M4 - a super...
$39.95
IN STOCK

NeoTrellis M4 Acrylic Enclosure Kit

PRODUCT ID: 3963
So you've got your Adafruit NeoTrellis M4, a cool/witty name for your band, a Soundcloud account, 
$12.50
IN STOCK

Silicone Elastomer 4x4 Button Keypad - for 3mm LEDs

PRODUCT ID: 1611
So squishy! These silicone elastomer keypads are just waiting for your fingers to press them. Go ahead, squish all you like! (They're durable and easy to clean, just wipe with mild...
$4.95
IN STOCK

3.5mm (1/8") Stereo Audio Jack Terminal Block

PRODUCT ID: 2791
One truth about working with audio is you always need the cable or adapter you don't have in your toolbox. That's why we love these terminal-block audio connectors so...
$2.50
IN STOCK

JST PH 4-Pin to Female Socket Cable - I2C STEMMA Cable - 200mm

PRODUCT ID: 3950
This cable will let you turn a JST PH 4-pin cable port into 4 individual wires with high-quality 0.1" female sockets on the end. We're carrying these to match up with any of...
$1.50
IN STOCK

Through-Hole Resistors - 10K ohm 5% 1/4W - Pack of 25

PRODUCT ID: 2784
ΩMG! You're not going to be able to resist these handy resistor packs! Well, axially, they do all of the resisting for you!This is a 25 Pack of 10K...
$0.75
IN STOCK

10uF 50V Electrolytic Capacitors - Pack of 10

PRODUCT ID: 2195
We like capacitors so much we made a kids show about them. ...
$1.95
IN STOCK

USB cable - USB A to Micro-B

PRODUCT ID: 592
This here is your standard A to micro-B USB cable, for USB 1.1 or 2.0. Perfect for connecting a PC to your Metro, Feather, Raspberry Pi or other dev-board or...
$2.95
IN STOCK

3.5mm Male/Male Stereo Cable

PRODUCT ID: 2698
Seamlessly transmit high-quality stereo audio with this 3.5mm Male/Male Stereo Cable.  Ideal for "passing the AUX cord,"...
$2.50
IN STOCK

In addition to the parts above  you'll need some powered speakers or headphones to listen to the fly tunes.

USB Powered Speakers

PRODUCT ID: 1363
Add some extra boom to your audio project with these powered loudspeakers. We sampled half a dozen different models to find ones with a good frequency response, so you'll get...
$9.95
IN STOCK

Cell-phone TRRS Headset - Earbud Headphones w/ Microphone

PRODUCT ID: 1966
These earbud headphones are the perfect accessory for your FONA - they've been tested to work with our modules - but can be used with any iOS or Android device that uses a TRRS...
$3.95
IN STOCK
This guide was first published on Dec 09, 2018. It was last updated on Dec 09, 2018. This page (Overview) was last updated on Nov 14, 2019.