florian.berthold
c4e1a43dfa
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.
217 lines
6.9 KiB
Markdown
217 lines
6.9 KiB
Markdown
# SN-L00 PCB Layout Guide
|
|
|
|
## Board Dimensions
|
|
|
|
| Parameter | Value | Notes |
|
|
|-----------|-------|-------|
|
|
| Width | 28.0mm | 6HP panel = 30mm, PCB 1mm clearance each side |
|
|
| Height | 100.0mm | Fits standard 3U with clearance |
|
|
| Thickness | 1.6mm | Standard PCB |
|
|
| Layers | 2 | Front + Back copper |
|
|
| Depth (mounted) | ~22mm | Skiff-friendly (<25mm) |
|
|
|
|
## Mounting Holes
|
|
|
|
| Hole | Position | Size |
|
|
|------|----------|------|
|
|
| MH1 (top) | 14.0, 5.0 | 3.2mm (M3) |
|
|
| MH2 (bottom) | 14.0, 95.0 | 3.2mm (M3) |
|
|
|
|
## Component Placement (Top to Bottom)
|
|
|
|
```
|
|
0mm 28mm
|
|
│←────── 28mm ───────→│
|
|
┌────────────────────┐ ─┬─ 0mm
|
|
│ ○ MH1 (M3) │ │
|
|
│ │ │ 5mm
|
|
├────────────────────┤ ─┤
|
|
│ │ │
|
|
│ ┌──────────────┐ │ │
|
|
│ │ OLED │ │ │ 10-25mm
|
|
│ │ MOD2 │ │ │
|
|
│ │ (128x32) │ │ │
|
|
│ └──────────────┘ │ │
|
|
│ │ │
|
|
├────────────────────┤ ─┤
|
|
│ [BTN] │ │ 28-35mm
|
|
│ SW1 │ │
|
|
├────────────────────┤ ─┤
|
|
│ │ │
|
|
│ ┌──────────────┐ │ │
|
|
│ │ RP2040-Zero │ │ │ 38-55mm
|
|
│ │ MOD1 │ │ │
|
|
│ │ (18x23mm) │ │ │
|
|
│ └──────────────┘ │ │
|
|
│ │ │
|
|
├────────────────────┤ ─┤
|
|
│ SMD Components │ │
|
|
│ U1 U2 U3 │ │ 58-75mm
|
|
│ C1-C5 R1-R6 │ │
|
|
│ D1-D4 D2(LED) │ │
|
|
├────────────────────┤ ─┤
|
|
│ │ │
|
|
│ ○ J2 ○ J3 │ │ 78-88mm
|
|
│ TRIG RETURN │ │
|
|
│ │ │
|
|
├────────────────────┤ ─┤
|
|
│ ═══════════════ │ │ 88-95mm
|
|
│ J1 │ │
|
|
│ (Eurorack 2x5) │ │
|
|
├────────────────────┤ ─┤
|
|
│ ○ MH2 (M3) │ │ 95mm
|
|
└────────────────────┘ ─┴─ 100mm
|
|
```
|
|
|
|
## Detailed Placement Coordinates
|
|
|
|
### Modules (Hand-solder)
|
|
|
|
| Ref | Component | Center X | Center Y | Rotation |
|
|
|-----|-----------|----------|----------|----------|
|
|
| MOD2 | OLED 128x32 | 14.0 | 17.5 | 0° |
|
|
| MOD1 | RP2040-Zero | 14.0 | 46.5 | 0° |
|
|
|
|
### User Interface
|
|
|
|
| Ref | Component | Center X | Center Y | Rotation |
|
|
|-----|-----------|----------|----------|----------|
|
|
| SW1 | Tactile 6x6mm | 14.0 | 31.5 | 0° |
|
|
| D2 | Power LED | 24.0 | 31.5 | 0° |
|
|
| R2 | LED resistor 1K | 24.0 | 36.0 | 90° |
|
|
|
|
### Connectors
|
|
|
|
| Ref | Component | Center X | Center Y | Rotation |
|
|
|-----|-----------|----------|----------|----------|
|
|
| J2 | Thonkiconn TRIG | 7.0 | 83.0 | 0° |
|
|
| J3 | Thonkiconn RETURN | 21.0 | 83.0 | 0° |
|
|
| J1 | 2x5 Eurorack | 14.0 | 92.0 | 0° |
|
|
|
|
### Power Section (Back side recommended)
|
|
|
|
| Ref | Component | Center X | Center Y | Rotation | Side |
|
|
|-----|-----------|----------|----------|----------|------|
|
|
| D1 | SS14 Schottky | 7.0 | 65.0 | 0° | Back |
|
|
| U1 | AMS1117-3.3 | 14.0 | 65.0 | 0° | Back |
|
|
| C1 | 10uF input | 10.0 | 60.0 | 0° | Back |
|
|
| C2 | 10uF output | 18.0 | 60.0 | 0° | Back |
|
|
| C3 | 100nF output | 21.0 | 60.0 | 0° | Back |
|
|
|
|
### Signal Conditioning
|
|
|
|
| Ref | Component | Center X | Center Y | Rotation | Side |
|
|
|-----|-----------|----------|----------|----------|------|
|
|
| U2 | 74LVC1G17 | 7.0 | 72.0 | 0° | Front |
|
|
| C4 | 100nF (U2) | 7.0 | 68.0 | 0° | Front |
|
|
| R3 | 100R trig | 7.0 | 76.0 | 90° | Front |
|
|
| U3 | MCP6001 | 21.0 | 72.0 | 0° | Front |
|
|
| C5 | 100nF (U3) | 21.0 | 68.0 | 0° | Front |
|
|
| R4 | 10K input | 21.0 | 76.0 | 90° | Front |
|
|
| R5 | 10K divider | 18.0 | 76.0 | 90° | Front |
|
|
| R6 | 22K divider | 18.0 | 72.0 | 90° | Front |
|
|
| D3 | BAT54 clamp | 24.0 | 70.0 | 90° | Front |
|
|
| D4 | BAT54 clamp | 24.0 | 74.0 | 90° | Front |
|
|
|
|
### Button
|
|
|
|
| Ref | Component | Center X | Center Y | Rotation |
|
|
|-----|-----------|----------|----------|----------|
|
|
| R1 | 10K pullup | 10.0 | 35.0 | 0° |
|
|
|
|
## Routing Guidelines
|
|
|
|
### Net Classes
|
|
|
|
| Class | Width | Clearance | Via Drill |
|
|
|-------|-------|-----------|-----------|
|
|
| Default | 0.25mm | 0.2mm | 0.3mm |
|
|
| Power | 0.5mm | 0.3mm | 0.4mm |
|
|
| Signal | 0.2mm | 0.2mm | 0.3mm |
|
|
|
|
### Power Routing
|
|
|
|
1. **+12V** path: J1 pin 4 → D1 → C1 → U1 VIN
|
|
2. **+3.3V** path: U1 VOUT → C2/C3 → distribute to all ICs
|
|
3. **GND**: Use ground pour on back layer, via stitch near decoupling caps
|
|
|
|
### Signal Routing Priority
|
|
|
|
1. I2C (SDA/SCL): Keep short, parallel, 0.5mm spacing
|
|
2. TRIG_OUT: Direct from RP2040 GP2 → U2 → R3 → J2
|
|
3. RETURN_IN: J3 → R4 → divider → U3 → RP2040 GP3
|
|
4. BTN: RP2040 GP4 → R1 → SW1 → GND
|
|
|
|
### Ground Plane
|
|
|
|
- Fill back copper with GND zone
|
|
- Via stitch every 5-10mm
|
|
- Keep clear around power input for thermal relief
|
|
- Connect GND pins of J2/J3 directly to plane
|
|
|
|
## Design Rules (PCBWay Compatible)
|
|
|
|
| Parameter | Value |
|
|
|-----------|-------|
|
|
| Min trace width | 0.15mm (0.2mm preferred) |
|
|
| Min clearance | 0.15mm (0.2mm preferred) |
|
|
| Min via drill | 0.3mm |
|
|
| Min via diameter | 0.6mm |
|
|
| Min hole size | 0.3mm |
|
|
| Min annular ring | 0.15mm |
|
|
|
|
## Silkscreen
|
|
|
|
### Front
|
|
|
|
- Component references (small, 0.8mm text)
|
|
- Jack labels: "TRIG" and "RETURN"
|
|
- "SN-L00 v0.1" at bottom
|
|
- "SubModular" at top
|
|
|
|
### Back
|
|
|
|
- "SN-L00" centered
|
|
- Pin 1 indicators for ICs
|
|
- Polarity markers for D1, power header
|
|
- "git.sub-net.at/submodular/SN-L00"
|
|
|
|
## Gerber Output
|
|
|
|
When exporting for PCBWay:
|
|
|
|
```
|
|
Required files:
|
|
- F.Cu (Front copper)
|
|
- B.Cu (Back copper)
|
|
- F.SilkS (Front silkscreen)
|
|
- B.SilkS (Back silkscreen)
|
|
- F.Mask (Front soldermask)
|
|
- B.Mask (Back soldermask)
|
|
- Edge.Cuts (Board outline)
|
|
- *.drl (Drill file)
|
|
|
|
Settings:
|
|
- Format: Gerber X2
|
|
- Drill: Excellon
|
|
- Units: mm
|
|
- Coordinate format: 4.6
|
|
```
|
|
|
|
## Assembly Notes
|
|
|
|
1. PCBWay can assemble all SMD parts on both sides
|
|
2. Hand-solder: MOD1 (RP2040-Zero), MOD2 (OLED)
|
|
3. Jacks (J2, J3) can be assembled or hand-soldered
|
|
4. Power header (J1) usually hand-soldered for alignment
|
|
|
|
## Checking Before Order
|
|
|
|
- [ ] DRC passes with no errors
|
|
- [ ] All nets connected (no airwires)
|
|
- [ ] Mounting holes align with panel
|
|
- [ ] Jacks align with panel holes
|
|
- [ ] Power header polarity marked
|
|
- [ ] Silkscreen readable and not over pads
|
|
- [ ] Ground plane connected properly
|