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Sound Board

sound board · coming soon

The Complex Arts Sound Board is a bare-metal, FreeRTOS audio development platform
designed for low-latency DSP projects. The board is capable of running Pure Data
as well as Arduino and ESP-IDF programs.

The Sound Board uses a 240MHz dual core ESP32 WROVER processor with
the highly configurable, I2C controllable Cirrus WM8983 audio codec.
The board includes the versatile SX1509 16-channel confurable GPIO expansion chip,
as well as 2 ADS1115 4-channel, 16bit ADCs and 2 onboard mems microphones.


  • 35 configurable GPIO
  • 8-in / 6-out audio channels
  • 1/8“ stereo line in/out
  • 1/8” headphone jack
  • 2 Mems digital microphones
  • 2 Differential mic inputs
  • 2W 8Ohm speaker output
  • Micro SD card reader
  • 2 Onboard user switches
  • 2 Onboard User LEDs
  • JTAG debugging header