This page allows you to customize the built-in word library on your Standalone T9 Predictive Keyboard. Use the form below to upload a text file containing the words you'd like available on your keyboard. The file should be a plain .txt file, and each line should contain exactly one word. Currently, words can only contain the letters A-Z (upper or lowercase), and can only be 25 characters long. Here you can find my default list of words. Feel free to download this file (File -> Save As) and add or remove words as you see fit!
When you successfully upload a word library file using the "Browse" button below, you will be given the option to download a new file, named library.t9l. Drag and drop this .t9l file on to your T9 keyboard drive (likely named CIRCUITPY) and replace the existing file with the same name. Back up the old file first if you want to save it! You can name it anything, but the keyboard will only use the file named library.t9l as it's current library. Once the new file has loaded (it may take a minute or so), the keyboard will reboot and your new library will be loaded!