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.
Pick your sound output:
Pick Your power, to stay or to go: