“A haxophone is an electronic musical instrument that resembles a saxophone. It is designed to be an inexpensive and fully customizable travel saxophone. You will never get the same expressiveness or depth of sound of a real saxophone. But with a haxophone you should be able to play alone or with friends wherever you might be. The mechanical keys and unique ergonomics give it a different kind of satisfying feel.
The design is fully open, software and hardware. This means that you can make it your own, from changing the type of key switches to making your own note and instrument mappings.
The haxophone is designed as a HAT (Hardware Attached on Top) for the Raspberry Pi family of single-board computers.
The haxophone HAT is a special type of keyboard laid out in the same way as saxophones are. It also includes a mouthpiece and a pressure sensor to detect breath intensity. The HAT also includes an audio amplifier so it does not rely on the amplifier that is built into the Raspberry Pi 3 and Raspberry Pi 4. Because of that, the HAT will also work with the least expensive of the Pi’s, the Raspberry Pi Zero.”