Add PCB layout and panel design
PCB: - 28x100mm 2-layer board outline - Mounting holes for M3 screws - Component placement guide with coordinates - Routing guidelines and design rules Panel: - 6HP (30x128.5mm) Eurorack panel specification - SVG design with hole positions - Supports aluminum, PCB, or acrylic manufacturing Updated main README with full project documentation.
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# SN-L00 Panel Specification
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## Eurorack 6HP Panel Dimensions
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| Parameter | Value | Notes |
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|-----------|-------|-------|
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| Width | 30.00mm | 6 × 5.08mm (6HP) |
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| Height | 128.50mm | 3U standard |
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| Thickness | 1.5-2.0mm | Aluminum or PCB |
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| Corner radius | 0mm | Square corners |
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## Mounting Holes
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Eurorack standard mounting rail positions:
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| Hole | X | Y | Diameter | Notes |
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|------|---|---|----------|-------|
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| Top Left | 7.5mm | 3.0mm | 3.2mm | Horizontal slot optional |
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| Top Right | 22.5mm | 3.0mm | 3.2mm | Horizontal slot optional |
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| Bottom Left | 7.5mm | 125.5mm | 3.2mm | Horizontal slot optional |
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| Bottom Right | 22.5mm | 125.5mm | 3.2mm | Horizontal slot optional |
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**Note**: Slots (elongated holes) of 3.2mm × 4mm allow for rail tolerance.
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## Component Holes
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| Component | X | Y | Diameter | Notes |
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|-----------|---|---|----------|-------|
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| OLED cutout | 15.0mm | 25.0mm | 28×12mm rect | Rectangular window |
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| Button | 15.0mm | 45.0mm | 7.0mm | For 6mm tactile + cap |
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| LED (power) | 24.0mm | 45.0mm | 3.0mm | For 3mm LED or light pipe |
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| Jack TRIG | 7.5mm | 95.0mm | 6.0mm | Thonkiconn PJ398SM |
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| Jack RETURN | 22.5mm | 95.0mm | 6.0mm | Thonkiconn PJ398SM |
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## Panel Layout Drawing
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```
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←───── 30.00mm ─────→
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┌─────────────────────┐ ─┬─ 0.00mm
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│ ○ ○ │ │ 3.00mm (mounting holes)
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│ │ │
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│ SubModular │ │ 12.00mm
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│ │ │
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│ ┌───────────────┐ │ │
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│ │ │ │ │
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│ │ OLED │ │ │ 19-31mm (display window)
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│ │ DISPLAY │ │ │
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│ │ │ │ │
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│ └───────────────┘ │ │
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│ │ │
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│ SN-L00 │ │ 38.00mm
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│ │ │
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│ ◯ • │ │ 45.00mm (button + LED)
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│ BTN PWR │ │
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│ │ │
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│ │ │
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│ │ │
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│ ┌───┐ ┌───┐ │ │
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│ │ │ │ │ │ │
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│ │ ○ │ │ ○ │ │ │ 95.00mm (jacks)
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│ │ │ │ │ │ │
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│ └───┘ └───┘ │ │
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│ TRIG RETURN │ │ 105.00mm (labels)
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│ │ │
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│ LATENCY TESTER │ │ 115.00mm
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│ │ │
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│ ○ ○ │ │ 125.50mm (mounting holes)
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└─────────────────────┘ ─┴─ 128.50mm
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```
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## OLED Display Window
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The 0.91" 128×32 OLED module dimensions:
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| Parameter | Value |
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|-----------|-------|
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| Module size | ~38 × 12mm |
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| Active area | ~22 × 6mm |
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| Mounting | Pin header on edge |
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**Panel cutout**: 28mm × 10mm rectangle, centered at (15.0, 25.0)
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Alternatively, a slightly larger window (30 × 12mm) gives tolerance for module alignment.
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## Material Options
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### Option A: Aluminum (Professional)
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- Material: 1.5mm aluminum 5052-H32
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- Finish: Brushed, anodized black
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- Printing: Laser engraved or UV printed
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- Cost: ~€10-15/panel (qty 5)
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### Option B: PCB Panel (DIY-friendly)
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- Material: 1.6mm FR4
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- Finish: Black soldermask, ENIG
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- Printing: Silkscreen white
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- Cost: ~€2-5/panel (qty 5 from PCBWay)
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### Option C: Acrylic (Budget)
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- Material: 3mm black acrylic
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- Finish: Laser cut
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- Printing: Engraved or adhesive labels
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- Cost: ~€3-5/panel
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## PCB Panel Design
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If using a PCB as the panel:
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```
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Front copper: None (for clean look) or decorative pattern
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Back copper: Optional ground plane
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Silkscreen: All text and graphics
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Soldermask: Black (or custom color)
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```
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## Graphics & Text
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### Suggested Layout
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| Element | Position | Size | Font |
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|---------|----------|------|------|
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| "SubModular" | Top center, Y=12mm | 2.5mm | Bold sans-serif |
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| "SN-L00" | Above button, Y=38mm | 3.0mm | Bold |
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| "TRIG" | Below left jack, Y=105mm | 2.0mm | Regular |
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| "RETURN" | Below right jack, Y=105mm | 2.0mm | Regular |
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| "LATENCY TESTER" | Bottom, Y=115mm | 1.5mm | Light |
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### Icon Ideas
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- Small waveform graphic near jacks
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- Clock/timer icon
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- Sub-Net logo (if available)
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## Hole Tolerances
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| Hole Type | Nominal | Tolerance |
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|-----------|---------|-----------|
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| Mounting | 3.2mm | +0.1/-0.0 |
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| Jack | 6.0mm | +0.1/-0.0 |
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| Button | 7.0mm | +0.2/-0.0 |
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| LED | 3.0mm | +0.1/-0.0 |
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## Files to Create
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For manufacturing:
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1. **DXF/DWG** - For laser cutting (aluminum/acrylic)
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2. **KiCad PCB** - For PCB panel
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3. **SVG** - For graphics reference
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4. **PDF** - Dimensional drawing
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## Assembly
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1. Mount OLED module with M2 standoffs or double-sided tape
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2. Jacks mount through panel, secured with nut
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3. Button may need extension shaft or cap
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4. LED can use light pipe for front visibility
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