hello everyone , in this tutorial I will show you how to build a RTTTL player ,and I will show you how to do that using Teensy 3.1 .
You can expand the number of the songs you want to add , and will show you how to do that later and give you a resources for more than 10K files.
The Teensy is a complete USB-based microcontroller development system, in a very small footprint, and run on a 32 bit ARM M4 MCU , and can run on a frequency up to 96MHz.
the size of the Flash Memory is 256K , 64K of RAM and 34 GPIO , that’s make it the best choice for such a project, I will add more audio files and draw more complex GUI later “and you can do as well”
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