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.

So you've got a cool/witty name for your band, a Soundcloud account, a 3D-printed Daft Punk...
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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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Discontinued - you can grab Ladyada's Coloring book - "R is for Robots"...
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Pick your sound output:

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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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:

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...
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A large-sized rechargeable battery pack for your Raspberry Pi (or Arduino, or
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This guide was first published on Dec 11, 2018. It was last updated on Dec 11, 2018.

This page (Overview) was last updated on Apr 15, 2022.

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