# I2S_Carrier

I2S_Carrier_v1.0: Carrier for I2S MEMs Microphones, standardized to fit all MEMs varients. Jumper selects Left or Right.

Converted via the OCCT molecule pipeline (step2glb job `516baa40233aada7`, 2026-07-14): anchored on MP3, 4 machine pins + 6 medium contacts, contact_z 2.8 mm, zero warnings.

## Bundle

GLB (OCCT, draco) · STEP (design-machine export) · kicad_pcb / kicad_sch / kicad_pro · footprint/symbol JSON (per-pad wire-attach) · JLCPCB gerbers + BOM + CPL.

## Import

`adom-molecule` create with `--no-optimize` reusing this GLB — do not regenerate from EDA export.

## Pin Map

Mic daughter site: `Daughter_MIC_IM72D128` pattern (standardized MEMS footprint). `MIC_SEL` picks the I2S channel — tie/jumper to GND or +3v3 for Left/Right per the fitted mic's datasheet.

### J1 — POWER / SELECT (fingers, 3×1.6 mm)

| Pin | Net |
|---|---|
| 1 | `+3v3` |
| 2 | `MIC_SEL` |
| 3 | `GND` |

### J2 — I2S (fingers, 3×1.6 mm)

| Pin | Net |
|---|---|
| 1 | `SD` |
| 2 | `WS` |
| 3 | `SCK` |

### Machine contacts

| MC | Net |
|---|---|
| MC1 | `+3v3` |
| MC2 | `GND` |
| MC3 | `SD` |
| MC4 | `SCK` |
| MC20 | `MIC_SEL` |
| MC21 | `WS` |