This guide provides two soundboards based on the Adafruit NeoTrellis M4. they each speak phrases for each letter of the english alphabet from A to Z.

The first soundboard is animal themed and based on the book The ABC book by C. B. Falls, published in 1923 and out of copyright. It is available in the Internet Archive.

The second is robot themed based on the book, Ladyada's E is for electronics, is published by Adafruit which is under a Attribution-ShareAlike 3.0 Unported license.

Both books can be downloaded for free in PDF form and they have black and white drawings suitable for coloring!


This project requires the Adafruit NeoTrellis M4 package. You will need a known, good USB A to micro-B cable to load software.

Other parts depend on if you'd like your project portable or not. You can select headphones or speakers. If you want portability, a cell phone recharge battery is ideal, otherwise you'll need 5V power for the speaker and for the NeoTrellis.

You can buy a pre-printed E is for Electronics coloring book or download a PDF later in this guide.

Hands pressing buttons on lit up NeoTrellis M4
So you've got a cool/witty name for your band, a Soundcloud account, a 3D-printed Daft Punk...
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USB cable - USB A to Micro-B - 3 foot long
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...
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Pick your sound output:

Two square-ish USB Powered Speakers
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...
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Cell-phone TRRS Headset - Earbud Headphones with Microphone
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...
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Pick Your power, to stay or to go:

5V 2.5A Switching Power Supply with 20AWG MicroUSB Cable
Our all-in-one 5V 2.5 Amp + MicroUSB cable power adapter is the perfect choice for powering single-board computers like Raspberry Pi, BeagleBone, or anything else that's...
Out of Stock
Angled shot of white rectangular USB battery pack with 4 dotted lights indicating battery is fully charged.
A large-sized rechargeable battery pack for your Raspberry Pi (or Arduino, or
In Stock

This guide was first published on Dec 11, 2018. It was last updated on Feb 29, 2024.

This page (Overview) was last updated on Nov 29, 2018.

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