While there are myriad ways to synthesizer, this one uses the tried-and-true method of FM synthesis courtesy of an Arduino Nano R3. In addition to the 17 keys, there are eight potentiometers here ...

A full write-up in Japanese (Google Translate link) carries an impressive level of detail about the project, but in short, it takes an Arduino Pro Micro, an array of keys, and an OLED display ...

The board, which is based on Atmel’s SAMA5D3 ARM Cortex-A5 processor-based MPU, has Arduino shield-compatible expansion headers for customisation. With a Linux distribution and software package the ...