The ringtone text transfer language (RTTTL) is a way to represent music data for play on older mobile phones. The format was created by Nokia for thier phones, but it also works with GPIO pins and a piezo buzzer.
This project shows how to use the Raspberry Pi’s GPIO pins to play RTTTL on a piezo buzzer. This project was inspired by existing RTTTL implementations, but differs from those in that its user interface is Web enabled.
The application, written in Java, starts an HTTP server. The HTTP server presents the user interface via HTML. The user interface provides a list of built-in RTTTL ditties available for play. The application’s interface also accepts user-provided RTTTL sequences, via its on-the-fly input controls.
Adafruit has had paid day off for voting for our team for years, if you need help getting that going for your organization, let us know – we can share how and why we did this as well as the good results. Here are some resources for voting by mail, voting in person, and some NY resources for our NY based teams as well. If there are additional resources to add, please let us know – adafruit.com/vote
Stop breadboarding and soldering – start making immediately! Adafruit’s Circuit Playground is jam-packed with LEDs, sensors, buttons, alligator clip pads and more. Build projects with Circuit Playground in a few minutes with the drag-and-drop MakeCode programming site, learn computer science using the CS Discoveries class on code.org, jump into CircuitPython to learn Python and hardware together, TinyGO, or even use the Arduino IDE. Circuit Playground Express is the newest and best Circuit Playground board, with support for CircuitPython, MakeCode, and Arduino. It has a powerful processor, 10 NeoPixels, mini speaker, InfraRed receive and transmit, two buttons, a switch, 14 alligator clip pads, and lots of sensors: capacitive touch, IR proximity, temperature, light, motion and sound. A whole wide world of electronics and coding is waiting for you, and it fits in the palm of your hand.
Have an amazing project to share? The Electronics Show and Tell is every Wednesday at 7pm ET! To join, head over to YouTube and check out the show’s live chat – we’ll post the link there.
