all-in-one audio board, works specially well with LogitechMediaServer

S/PDIF receiver library for Raspberry Pi Pico series

Audio controller (I2S, SPDIF, DAC)

low noise low cost stm32 usb-audio dac with optional level meter

stm32 black pill usb sound card

USB and S/PDIF audio DAC using the Raspberry Pi Pico (RP2040)

S/PDIF recorder to WAV on microSD card for Raspberry Pi Pico series

Hi-Res MP3/WAV/AAC/FLAC Player for Teensy 4.0

A low-cost USB audio interface with S/PDIF optical output, based on the Cmedia CM108 ASIC.

USB audio S/PDIF output

Adding digital output for old synths

"Asynchronous SPDIF Mixer" synchronizes and mixes up to three asynchronous S/PDIF streams into a 48 kHz output. Running on an STM32H743 and developed in C++ with CubeIDE, it compensates for drift with interpolation. A custom KiCad-designed PCB hosts this real-time audio processing solution.

S/PDIF Library

S/PDIF DAC Headphone Amp for Raspberry Pi Pico

Simple TOSLINK to USB + S/PDIF receiver. Someday + HDMI ARC + HDMI CEC.

S/PDIF frame encoder.

Arduino Library for the Keystone semi T3B series DAB+ / FM Tuner.

Serial (LPCM) to S/PDIF transmitter. Using MachXO2 (1200HC QFN32).

Multi-Output I2S TX using PARLIO (Parallel IO) Peripheral.

Software Dolby Digital Live / DTS Connect-style encoder for Windows: a virtual 5.1 audio device that encodes any multichannel PCM to AC3 (Dolby Digital) in real time and streams it over S/PDIF (Toslink/optical) to an AV receiver. FFmpeg AC3 + WASAPI exclusive passthrough; a SoundPusher-for-Windows approach.