v0.1.0 - First analog matrix prototype

First public prototype of a DC-coupled 4x4 programmable analog matrix, targeting DC-1 MHz, signed coefficients from -1 to +1, and +/-4 V outputs into external 50-ohm loads. Uses the original Raspberry Pi Pico for static coefficient control.

PCB D and enclosure M3 are the selected design; no added power LED. Includes KiCad source, firmware, circuit simulation evidence, BNC access checks, and CAD renders.

Downloads:

• PCB ZIP: editable schematic/PCB, local libraries, firmware, BOM and validation reports.
• Fabrication ZIP: Gerbers and plated/non-plated drill files.
• JLCPCB handoff ZIP: upload Gerber archive, assembly BOM/CPL, manual-item list and order request for two assembled boards.
• Enclosure ZIP: complete populated-PCB/enclosure STEP assemblies, three STLs, local models, Blender scene and renders.

Electrical checks, firmware protocol tests and nominal CAD checks pass. This hardware has not been built or thermally qualified. Component matching, live stock, placement rotations and via-fill CAM acceptance remain pending. No JLCPCB order has been submitted or paid.