Central breakout board providing all the audio and MIDI connections your console needs—DIN MIDI, dual USB host ports, stereo RCA outputs, and a 3.5mm audio jack on a single compact PCB.
Overview
The Audio/MIDI I/O board serves as the connectivity hub of a PIPE 2C console. It receives serial and USB MIDI signals and audio from the computer, and routes the audio output to both speakers and headphones—all on a single panel-mountable PCB.
Key Features
- DIN-5 MIDI port — Standard 5-pin DIN connector for classic MIDI in/out
- Dual USB-A host ports — Connect USB MIDI controllers, audio interfaces, or storage
- Stereo RCA outputs — Line-level audio output for amplifiers or powered speakers
- 3.5mm audio jack — Headphone or auxiliary audio output
- 5-pin header — Internal connection to the central controller
- Panel-mountable — Designed for clean rear-panel installation
Schematic
PCB Layout
Bill of Materials
| Component | Designator | Quantity | Description |
|---|---|---|---|
| DIN-504-M10 | CN1 | 1 | 5-pin DIN MIDI connector |
| U-USBAR04P-F002 | USB2, USB3 | 2 | USB Type-A host connectors |
| KH-2.54PH180-1X5P | H1 | 1 | 5-pin vertical male header |
| PJ-320D | U1 | 1 | 3.5mm audio jack (SMD) |
| XD-RCA-103R | CN2, CN3 | 2 | RCA audio output connectors |
Connector Layout
Open Source
Full schematics, PCB layout, and BOM available on OSHWLab: