T-DSP

Open-source audio hardware, built for the Teensy Audio Library.

T-DSP is an open-source hardware platform built for the Teensy Audio Library. Teensy owns audio processing, USB audio, and digital I/O. ESP32 handles Bluetooth control and audio sink. A swappable codec module gives you customizable analog I/O — XLR, RCA, 3.5mm, whatever you need.

Modular. Hackable. Open hardware under CC BY-NC-SA 4.0.

Early hardware. Looking for testers with Teensy audio experience to validate the design.

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Core Projects

T-DSP Desktop Pro 3D render

Desktop Pro

Desktop audio backplane hosting a Teensy 4.1, ESP32, and TAC5212 codec on an 8-layer PCB. USB Audio, MIDI, S/PDIF, and expansion headers for a complete audio development platform.

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T-DSP TAC5212 Pro Audio Module 3D render

TAC5212 Pro Audio Module

Compact stereo codec module built on the TI TAC5212. The core building block of the platform — handles ADC/DAC conversion, mic preamp, and headphone drive in a solderable package.

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T-DSP IO 2x2 Combo 3D render

IO 2x2 Combo

2-in/2-out balanced audio I/O backplane with XLR outputs and combo XLR/TRS inputs. Pairs with the TAC5212 module for a ready-to-use professional audio interface.

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Design Philosophy

Modular

Codec modules solder onto backplane PCBs like any other component. Design your own backplane, add the connectors you need, and build exactly the device you want.

Open Source

Complete KiCad designs published with schematics, interactive BOMs, Gerber files, and documentation. Build it, modify it, learn from it.

Compatible

Standard I2S audio, I2C control, and 2.54mm headers. Works with Teensy, ESP32, or any I2S-capable microcontroller and DSP platform.