Initial commit: cyberdeck project planning docs
- Salvage analysis of K501U components - Orange Pi 5 SBC selection rationale - Storage architecture (SD card + USB) - USB hub expansion plan - Parts list and cost estimates
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.gitignore
vendored
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vendored
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# Byte-compiled / optimized / DLL files
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__pycache__/
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*.py[cod]
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*$py.class
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# Editor directories and files
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.idea/
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.vscode/
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*.swp
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*.swo
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*~
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# OS files
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.DS_Store
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Thumbs.db
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# Temporary files
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*.tmp
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*.temp
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*.log
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# Backup files
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*.bak
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*.backup
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# Images (large files)
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*.jpg
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*.jpeg
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*.png
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*.gif
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*.bmp
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*.svg
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# Archives
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*.zip
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*.tar.gz
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*.rar
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# Sensitive files
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secrets/
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*.key
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*.pem
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.env
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README.md
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README.md
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# K501U Cyberdeck
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A cyberdeck built from salvaged ASUS K501U laptop components and Orange Pi 5 SBC.
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## Project Status
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**Phase:** Component acquisition andplanning
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- [x] Salvage analysis (K501U components)
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- [x] Display identification and controller board ordered
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- [x] SBC selection (Orange Pi 5 16GB)
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- [x] Storage architecture planned
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- [x] USB expansion design
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- [ ] Case design
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- [ ] Power system (battery, charging)
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- [ ] Fabrication
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- [ ] Software configuration
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## Components
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### Salvaged from ASUS K501U
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| Component | Model | Status |
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|-----------|-------|--------|
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| Display | Innolux N156HGE-EAB (Rev. C2) | Controller board ordered |
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| Hinge mechanism | Original K501U | Available |
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| Webcam | K501U module | Available |
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| WiFi antenna | K501U | Available |
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| Cooling fan | K501U | Available |
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**Not reused:**
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- RAM (DDR3L soldered, incompatible with modern SBCs)
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- SSD (owner repurposed)
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- WiFi card (Intel 7265NGW, no E-key slot on OPi5)
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### New Components
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| Component | Selection | Status |
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|-----------|-----------|--------|
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| SBC | Orange Pi 5 (base, 16GB) | eBay bid pending |
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| Display controller | 30-pin eDP to HDMI | Ordered (~$24) |
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| Storage (boot) | MicroSD 64GB Endurance | To purchase |
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| USB hub | Powered 7-port USB 3.0 | To purchase |
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| Storage (data) | USB 3.0 SSD enclosure | To purchase |
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## Documentation
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- [Salvage Analysis](docs/salvage-analysis.md) - K501U component breakdown
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- [SBC Selection](docs/sbc-selection.md) - Orange Pi 5 details and rationale
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- [Storage Architecture](docs/storage-architecture.md) - SD card + USB storage plan
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- [USB Expansion](docs/usb-expansion.md) - Hub selection and port allocation
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- [Parts List](docs/parts-list.md) - Bill of materials with costs
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## Quick Reference
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### Display
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- **Panel:** Innolux N156HGE-EAB (Rev. C2)
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- **Size:** 15.6" 1920×1080
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- **Interface:** 30-pin eDP
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- **Controller:** Standard 30-pin eDP to HDMI (~$24)
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### SBC
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- **Board:** Orange Pi 5 (RK3588S, base model, 16GB RAM)
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- **Storage:** MicroSD slot + USB 3.0 external
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- **USB:** 1× USB 3.0, 2× USB 2.0 native
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- **Power:** 12V 2A barrel or USB-C PD
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### Cost Estimate
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| Category | Cost |
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|----------|------|
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| SBC | ~$104 |
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| Display controller | ~$24 |
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| Storage (SD + hub + enclosure) | ~$35-50 |
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| Power supply | ~$10 |
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| **Subtotal** | **$170-190** |
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(Excludes case materials, battery, misc hardware)
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docs/parts-list.md
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docs/parts-list.md
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# Parts List
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## Bill of Materials
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### Core Components
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| Item | Specification | Source | Est. Cost | Status |
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|------|--------------|--------|-----------|--------|
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| SBC | Orange Pi 5 16GB (base) | eBay | $99 + $5 shipping | Bid pending |
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| Display controller | 30-pin eDP to HDMI | Amazon/eBay | $24 | Ordered |
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| MicroSD card | 64GB Endurance | Amazon | $10-12 | To purchase |
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### Salvaged from K501U
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| Item | Status | Notes |
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|------|--------|-------|
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| Display (Innolux N156HGE-EAB) | Available | Controller board ordered |
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| Hinge mechanism | Available | Intact |
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| WiFi antenna | Available | In hinge |
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| Webcam | Available | In bezel |
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| Cooling fan | Available | 4-pin PWM |
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### USB Expansion
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| Item | Specification | Source | Est. Cost | Status |
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|------|--------------|--------|-----------|--------|
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| USB hub | Powered 7-port USB 3.0 | Amazon | $15-25 | To purchase |
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| USB enclosure | SATA 2.5" USB 3.0 | Amazon | $10-15 | To purchase |
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| (or) USB flash | 128GB USB 3.0 | Amazon | $15-25 | Alternative |
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### Power
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| Item | Specification | Source | Est. Cost | Status |
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|------|--------------|--------|-----------|--------|
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| Power supply | USB-C PD or 12V 2A | Amazon | $8-12 | To purchase |
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| (Future) Battery | 10,000-20,000 mAh PD | TBD | $20-40 | Future |
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### Networking
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| Item | Specification | Source | Est. Cost | Status |
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|------|--------------|--------|-----------|--------|
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| WiFi dongle | USB, Linux-compatible | Amazon | $10-15 | To purchase |
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### Optional
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| Item | Purpose |Source | Est. Cost |
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|------|---------|--------|-----------|
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| Heatsink + fan | Cooling | AliExpress | $5-10 |
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| Panel-mount cables | Case integration | Amazon | $10-20 |
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| SD card reader | Backup/imaging | Amazon | $8-12 |
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---
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## Cost Summary
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### Minimum Viable Build
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| Category | Cost |
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|----------|------|
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| SBC | $104 |
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| Display controller | $24 |
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| MicroSD | $12 |
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| USB hub | $20 |
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| USB enclosure | $12 |
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| Power supply | $10 |
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| WiFi dongle | $12 |
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| **Subtotal** | **$194** |
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### With Optional Items
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| Category | Cost |
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|----------|------|
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| Base build | $194 |
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| Heatsink/cooling | $10 |
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| Panel-mount cables | $15 |
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| **Total** | **$219** |
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### Future Additions
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| Category | Cost |
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|----------|------|
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| Battery pack (portable) | $20-40 |
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| Case materials | TBD |
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| Custom PCB | TBD |
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---
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## Ordered Items
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| Item | Date Ordered | Est. Arrival | Source | Tracking |
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|------|-------------|--------------|--------|----------|
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| Display controller board | TBD | 2-4 weeks | Amazon/eBay | TBD |
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## Pending Purchases
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- MicroSD card
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- Powered USB hub
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- USB enclosure or flash drive
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- Power supply
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- WiFi dongle
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---
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## Supplier Links (Research)
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*Add actual links when ordering:*
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- Orange Pi 5: eBay search for "Orange Pi 5 16GB"
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- Display controller: Amazon search "N156HGE-EAB controller board" or "30-pin eDP to HDMI"
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- USB hub: Amazon "Sabrent 7-port USB 3.0 powered"
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- MicroSD: Amazon "SanDisk Endurance 64GB" or "Samsung PRO Endurance 64GB"
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docs/salvage-analysis.md
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# Salvage Analysis: ASUS K501U
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**Source:** ASUS K501U laptop with failed motherboard
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**Goal:** Extract usable components for cyberdeck build
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---
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## Display Panel
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### Identification
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|Attribute | Value |
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|----------|-------|
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| Model | Innolux N156HGE-EAB (Rev. C2) |
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| Size | 15.6" diagonal |
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| Resolution | 1920×1080 (FHD) |
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| Interface | 30-pin eDP |
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| Backlight | LED |
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| Panel type | IPS |
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### Verification Process
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1. Removed bezel clips (plastic tabs around screen edge)
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2. Located panel sticker on back of LCD assembly
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3. Confirmed model number: N156HGE-EAB
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4. Verified 30-pin connector (not 40-pin, not LVDS)
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### Compatibility
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**Standard eDP controller boards work with this panel.**
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Search terms:
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- "N156HGE-EAB controller board"
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- "30-pin eDP to HDMI"
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- "LCD controller board 15.6"
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**Cost:** ~$24 (Amazon/eBay/AliExpress)
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### Notes
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- Panel is in good condition, no scratches or dead pixels
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- Keep original bezel and frame for mounting
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- Hinge mechanism intact - useful for clamshell design
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---
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## Storage
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### Original Configuration
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The K501U had an M.2 NVMe SSD installed.
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**Status:** Owner already removed and repurposed. Now in a USB enclosure serving as external drive.
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**Not available for this build.**
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### RAM
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| Attribute | Value |
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|-----------|-------|
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| Type | DDR3L (low voltage) |
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| Speed | 1600 MHz |
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| Location | Soldered onboard (no SODIMM slot populated) |
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| Capacity | 8GB (varies by SKU) |
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**Not reusable:**
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- DDR3L is incompatible with modern SBCs (DDR4/DDR5)
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- Soldered to motherboard, not a removable DIMM
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- K501U base model has empty SODIMM slot but uses soldered RAM
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---
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## WiFi
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### Original Card
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| Attribute | Value |
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|-----------|-------|
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| Model | Intel 7265NGW |
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| Form factor | M.2 2230 |
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| Interface | M.2 E-key |
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| Protocols | 802.11ac, Bluetooth 4.0 |
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### Reusability
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**Not directly usable with Orange Pi 5 (base model).**
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- Orange Pi 5 Plus has E-key M.2 slot → WiFi card works
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- Orange Pi 5 (base) has no E-key slot → requires USB WiFi dongle
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### Workaround
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USB WiFi dongle (Linux-compatible):
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- Realtek RTL8812BU (USB 3.0, AC1200)
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- MediaTek MT7601U (USB 2.0, N150)
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- Any dongle with in-kernel driver support
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**Cost:** $10-15
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---
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## Other Components
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### Webcam
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| Attribute | Value |
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|-----------|-------|
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| Location | Embedded in display bezel |
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| Interface | USB (internal cable to motherboard) |
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| Connector | Proprietary pinout |
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**Potential reuse:**
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- Can be extracted with bezel
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- Requires USB pinout identification
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- Standard webcam protocol (UVC) likely supported
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- May need adapter cable
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### Cooling Fan
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| Attribute | Value |
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|-----------|-------|
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| Type | Blower fan with heat pipes |
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| Interface | 4-pin PWM |
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| Connector | Standard laptop fan connector |
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**Potential reuse:**
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- Could cool Orange Pi 5 (with GPIO PWM adapter)
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- Requires mounting solution
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- Might be overkill for OPi5 power draw
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### Keyboard/Trackpad
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| Attribute | Value |
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|-----------|-------|
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| Keyboard | Integrated PCB, proprietary connector |
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| Trackpad | Precision trackpad, proprietary connector |
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**Not reusable:**
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- Proprietary motherboard connectors
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- No standard USB interface
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- Requires significant reverse engineering
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### WiFi Antenna
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| Attribute | Value |
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|-----------|-------|
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| Location | Embedded indisplay hinge |
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| Type | Dual-band antenna |
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| Cable | U.FL connectors |
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**Reusable with USB WiFi dongle:**
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- Antenna can be connected to compatible dongle
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- U.FL to SMA adapter cable needed
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- Good signal reception quality
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### Hinge Mechanism
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| Attribute | Value |
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|-----------|-------|
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| Type | Dual-hinge laptop hinge|
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| Condition | Intact, smooth operation |
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| Mount | Metal frame attached to display |
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**Useful for cyberdeck:**
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- Natural open/close mechanism
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- Can support display weight
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- Mounting points for base
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---
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## Summary
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|
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### Direct Reuse
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| Component | Effort | Value |
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|-----------|--------|-------|
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| **Display** | Low (with controller) | High |
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| **Hinge** | Low | Medium |
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| **WiFi antenna** | Low (with adapter) | Low |
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### Not Reused
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| Component | Reason |
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|-----------|--------|
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| SSD | Already repurposed |
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| RAM | Wrong generation |
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| WiFi card | No E-key slot on OPi5 |
|
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| Keyboard/trackpad | Proprietary connectors |
|
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| Motherboard | Failed |
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|
||||
### New Components Needed
|
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|
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| Component | Estimated Cost |
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|-----------|----------------|
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| eDP controller board | $24 |
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| USB WiFi dongle | $10-15 |
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| SBC (Orange Pi 5) | $70-100 |
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||||
---
|
||||
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||||
## Reference
|
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|
||||
- Panel datasheet: Innolux N156HGE-EAB product brief
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- K501U teardown: Standard ASUS budget laptop construction
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||||
- Orange Pi 5 specs: orangepi.org
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137
docs/sbc-selection.md
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# SBC Selection: Orange Pi 5
|
||||
|
||||
**Decision:** Orange Pi 5 (base model, non-Plus) 16GB RAM
|
||||
|
||||
---
|
||||
|
||||
## Options Considered
|
||||
|
||||
| Board | RAM | Price | NVMe | WiFi | Notes |
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|-------|-----|-------|------|------|-------|
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|**Orange Pi 5 16GB**| 16GB | $70-100 | PCIe 2.0 M.2 | No | **Selected** |
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| Orange Pi 5 Plus 16GB | 16GB | $130-150 | PCIe 3.0 M.2 | E-key slot | Better specs, higher cost |
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| Raspberry Pi 5 8GB | 8GB | $80 | HAT required | No | Familiar ecosystem, less RAM |
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||||
| Rock 5B 16GB | 16GB | $140 | PCIe 3.0 M.2 | No | Higher cost |
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||||
|
||||
---
|
||||
|
||||
## Orange Pi 5 Specifications
|
||||
|
||||
### Model Variants
|
||||
|
||||
| Model | NVMe Slot | WiFi Slot | NVMe Speed |
|
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|-------|-----------|-----------|------------|
|
||||
| Orange Pi 5 (base) | M.2 M-key (PCIe 2.0) | None | ~300 MB/s |
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||||
| Orange Pi5 Plus | M.2 M-key (PCIe 3.0) + E-key | E-key for WiFi | ~2000 MB/s |
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||||
|
||||
### RK3588S SoC
|
||||
|
||||
| Attribute | Value |
|
||||
|-----------|-------|
|
||||
| CPU | 8-core (4× Cortex-A76 + 4× Cortex-A55) |
|
||||
| GPU | Mali-G610 MC4 |
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||||
| NPU | 6 TOPS AI accelerator |
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||||
| Process |8nm |
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||||
|
||||
### Memory
|
||||
|
||||
| Attribute | Value |
|
||||
|-----------|-------|
|
||||
| Configurations | 4/8/16/32GB |
|
||||
| Type | LPDDR4/LPDDR4X |
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||||
| Selected | 16GB |
|
||||
|
||||
### Storage Support
|
||||
|
||||
| Interface | Speed |
|
||||
|-----------|-------|
|
||||
| MicroSD | Up to 512GB |
|
||||
| M.2 NVMe (base) | PCIe 2.0 x1 (~300 MB/s) |
|
||||
| M.2 NVMe (Plus) | PCIe 3.0 x2 (~2000 MB/s) |
|
||||
| USB 3.0 | 5 Gbps |
|
||||
|
||||
### Connectivity (Base Model)
|
||||
|
||||
| Port | Count | Speed |
|
||||
|------|-------|-------|
|
||||
| USB 3.0 | 1 | 5 Gbps |
|
||||
| USB 2.0 | 2 | 480 Mbps |
|
||||
| USB-C | 1 | Power + DisplayPort |
|
||||
| Ethernet | 1 | 1 Gbps |
|
||||
| HDMI | 1 | 4K60 |
|
||||
| MIPI DSI | 1 | Display |
|
||||
| MIPI CSI | 2 | Camera |
|
||||
| GPIO | 26-pin | I2C, SPI, UART, PWM |
|
||||
|
||||
### Power
|
||||
|
||||
| Attribute | Value |
|
||||
|-----------|-------|
|
||||
| Input| USB-C PD or barrel jack |
|
||||
| Voltage | 12V (barrel), 5V (USB-C) |
|
||||
| Current | 2A recommended |
|
||||
| Typical draw |5-8W under load |
|
||||
|
||||
---
|
||||
|
||||
## Rationale
|
||||
|
||||
### Why Orange Pi 5 (Base)
|
||||
|
||||
1. **Cost:** $70-100 vs $130-150 for Plus
|
||||
2. **RAM:** 16GB excellent for desktop Linux, dev work
|
||||
3. **Performance:** RK3588S significantly faster than Pi 5
|
||||
4. **Availability:** Widely available on eBay with bid flexibility
|
||||
|
||||
### Why Not Orange Pi 5 Plus
|
||||
|
||||
- NVMe speed improvement (2000 MB/s) not critical for cyberdeck use
|
||||
- WiFi card slot (E-key) not needed - USB dongle acceptable
|
||||
- Price difference ($30-50) better spent on storage and peripherals
|
||||
|
||||
### Speed Reality Check
|
||||
|
||||
| Use Case | Base (PCIe 2.0) | Plus (PCIe 3.0) |
|
||||
|----------|-----------------|-----------------|
|
||||
| Boot time | ~10s | ~8s |
|
||||
| App load | Adequate | Faster |
|
||||
| File transfer | ~300 MB/s | ~1500 MB/s |
|
||||
| Development| Fine | Fine |
|
||||
|
||||
**For a cyberdeck used as portable workstation, PCIe 2.0 NVMe is adequate.**
|
||||
|
||||
---
|
||||
|
||||
## eBay Bid Strategy
|
||||
|
||||
| Auction | Bid Limit | Shipping | Total Max |
|
||||
|---------|-----------|----------|-----------|
|
||||
| Orange Pi 5 16GB | $99 | $5 | $104 |
|
||||
|
||||
**Bid late, bid once.** Set max bid and let proxy handle it.
|
||||
|
||||
---
|
||||
|
||||
## Accessories Needed
|
||||
|
||||
### Required
|
||||
|
||||
| Item | Cost |
|
||||
|------|------|
|
||||
| Power supply (USB-C PD or 12V barrel) | $8-12 |
|
||||
| MicroSD card (64GB Endurance) | $10-12 |
|
||||
|
||||
### Recommended
|
||||
|
||||
| Item | Cost |
|
||||
|------|------|
|
||||
| Heatsink + fan | $5-10 |
|
||||
| Case (or custom build) | TBD |
|
||||
|
||||
---
|
||||
|
||||
## Resources
|
||||
|
||||
- [Orange Pi 5 Wiki](http://www.orangepi.org/html/hardWare/computerAndMicrocontrollers/details/Orange-Pi-5.html)
|
||||
- [RK3588 datasheet](https://www.rock-chips.com/)
|
||||
- [Armbian for Orange Pi 5](https://www.armbian.com/orange-pi-5/)
|
||||
182
docs/storage-architecture.md
Normal file
182
docs/storage-architecture.md
Normal file
|
|
@ -0,0 +1,182 @@
|
|||
# Storage Architecture
|
||||
|
||||
**Strategy:** SD card for boot/root, USB for data
|
||||
|
||||
---
|
||||
|
||||
## Design Principles
|
||||
|
||||
1. **Simplicity:** SD card boots out of the box, no U-Boot complexity
|
||||
2. **Reliability:** Endurance-rated SD cards last longer
|
||||
3. **Flexibility:** USB storage can be swapped/upgraded easily
|
||||
4. **Cost:** Minimal investment, repurpose existing drives
|
||||
|
||||
---
|
||||
|
||||
## Layer 1: Boot/Root (MicroSD)
|
||||
|
||||
### Card Selection
|
||||
|
||||
| Attribute | Recommendation |
|
||||
|-----------|----------------|
|
||||
| Capacity | 64GB minimum, 128 GB preferred |
|
||||
| Type | Endurance-rated or Industrial |
|
||||
| Brands | SanDisk Endurance, Samsung PRO Endurance |
|
||||
|
||||
**Why endurance cards:**
|
||||
|
||||
Consumer SD cards are rated for bursts of writes (camera use). OS usage is constant logging, updates, cache writes. Endurance cards are rated for:
|
||||
|
||||
- 5000+ hours of continuous recording
|
||||
- 1000+ write cycles per sector
|
||||
- 5-10× longer lifespan than consumer cards
|
||||
|
||||
**Cost:**$10-15 for 64GB
|
||||
|
||||
### Boot Configuration
|
||||
|
||||
Default Orange Pi 5 boots from SD:
|
||||
|
||||
```
|
||||
/dev/mmcblk0 (SD card)
|
||||
├── /dev/mmcblk0p1 → /boot (fat32, ~200MB)
|
||||
├── /dev/mmcblk0p2 → / (ext4, ~60GB)
|
||||
└── /dev/mmcblk0p3 → /home (ext4, remaining)
|
||||
```
|
||||
|
||||
Or single partition with separate mount points:
|
||||
|
||||
```
|
||||
/dev/mmcblk0p2 → / (ext4, all space)
|
||||
/home → bind mount or subdirectory
|
||||
```
|
||||
|
||||
### Root-on-USB (Optional)
|
||||
|
||||
For faster I/O, copy root to USB SSD:
|
||||
|
||||
1. Boot from SD, insert USB SSD
|
||||
2. `sudo rsync -ax / /mnt/usb/`
|
||||
3. Edit `/boot/extlinux/extlinux.conf`:
|
||||
```
|
||||
append root=/dev/sda1
|
||||
```
|
||||
4. Boot from USB, SD only handles bootloader
|
||||
|
||||
**Tradeoff:** More complexity, faster app loading.
|
||||
|
||||
---
|
||||
|
||||
## Layer 2: Data Storage (USB)
|
||||
|
||||
### Options
|
||||
|
||||
| Option | Speed | Cost | Notes |
|
||||
|--------|-------|------|-------|
|
||||
| USB flash drive | 100-150 MB/s | $12-20 | Cheap, limited endurance |
|
||||
| USB 3.0 SATA enclosure | ~400 MB/s | $10-15 + drive | Reuse 2.5" drives |
|
||||
| USB 3.0 NVMe enclosure | ~400 MB/s | $8-15 + drive | Compact, fast |
|
||||
| USD 3.0 flash drive (fast) | 200-400 MB/s | $20-40 | Kingston DataTraveler, Samsung BAR |
|
||||
|
||||
### Recommendation
|
||||
|
||||
**USB 3.0 SATA enclosure with salvaged 2.5" SSD.**
|
||||
|
||||
If you have a spare 2.5" SATA SSD from another build/upgrade:
|
||||
- Enclosure cost: $10-15
|
||||
- Speed: ~400 MB/s (SATAIII limit over USB 3.0)
|
||||
- Capacity: whatever the drive is
|
||||
|
||||
If no spare drive:
|
||||
- USB 3.0 flash drive (128GB): $15-25
|
||||
- Or NVMe enclosure ($10) + budget NVMe drive ($20-30)
|
||||
|
||||
### Mount Strategy
|
||||
|
||||
```bash
|
||||
# /etc/fstab
|
||||
UUID=<ssd-uuid>/mnt/data ext4 defaults,noatime 0 2
|
||||
/mnt/data/projects /home/jez/projects none bind 0 0
|
||||
/mnt/data/media /home/jez/media none bind 0 0
|
||||
```
|
||||
|
||||
Mount on-demand or at boot, depending on use case.
|
||||
|
||||
---
|
||||
|
||||
## Storage Layout
|
||||
|
||||
```
|
||||
┌─────────────────────────────────────┐
|
||||
│ MicroSD Card (/dev/mmcblk0) │
|
||||
│ SanDisk Endurance 64GB │
|
||||
│ ├── /boot (fat32, 200MB) │
|
||||
│ ├── / (ext4, 25GB) │
|
||||
│ └── /home (ext4, 38GB) │
|
||||
│ Basic config, small files │
|
||||
└─────────────────────────────────────┘
|
||||
|
||||
┌─────────────────────────────────────┐
|
||||
│ USB SSD (/dev/sda) │
|
||||
│ SATA or NVMe in USB 3.0 enclosure │
|
||||
│ ├── /mnt/data/projects │
|
||||
│ ├── /mnt/data/media │
|
||||
│ └── /mnt/data/backup │
|
||||
│ Mounted on-demand │
|
||||
└─────────────────────────────────────┘
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Backup Strategy
|
||||
|
||||
### SD Card Imaging
|
||||
|
||||
```bash
|
||||
# Backup
|
||||
sudo dd if=/dev/mmcblk0 of=cyberdeck-sd-backup.img bs=4M status=progress
|
||||
|
||||
# Restore
|
||||
sudo dd if=cyberdeck-sd-backup.img of=/dev/mmcblk0 bs=4M status=progress
|
||||
```
|
||||
|
||||
Or use **Pi Imager** / **BalenaEtcher** for GUI imaging.
|
||||
|
||||
### Data Backup
|
||||
|
||||
- Timeshift for system snapshots
|
||||
- rsync to external drive
|
||||
- Cloud sync for critical files
|
||||
|
||||
---
|
||||
|
||||
## Performance Expectations
|
||||
|
||||
| Operation | SD Card | USB SSD |
|
||||
|-----------|---------|---------|
|
||||
| Boot time | 8-12s | 5-8s (root-on-USB) |
|
||||
| App launch | 1-3s | 0.5-1s |
|
||||
| File read (1GB) | 40-90s | 3-5s |
|
||||
| File write (1GB) | 60-120s | 3-5s |
|
||||
| Random I/O | Slow | Fast |
|
||||
|
||||
**SD card is fine forOS and light use. USB SSD for anything I/O intensive.**
|
||||
|
||||
---
|
||||
|
||||
## Cost Summary
|
||||
|
||||
| Item | Low | High |
|
||||
|------|-----|------|
|
||||
| MicroSD 64GB Endurance | $10 | $15 |
|
||||
| USB 3.0 SATA enclosure | $10 | $15 |
|
||||
| (Assume spare SSD) | $0 | $0 |
|
||||
| **Total** | **$20** | **$30** |
|
||||
|
||||
If no spare SSD:
|
||||
|
||||
| Item | Low | High |
|
||||
|------|-----|------|
|
||||
| MicroSD 64GB Endurance | $10 | $15 |
|
||||
| USB 3.0 flash drive 128GB | $15 | $25 |
|
||||
| **Total** | **$25** | **$40** |
|
||||
252
docs/usb-expansion.md
Normal file
252
docs/usb-expansion.md
Normal file
|
|
@ -0,0 +1,252 @@
|
|||
# USB Port Expansion
|
||||
|
||||
**Goal:** Multiple USB ports for cyberdeck peripherals
|
||||
|
||||
---
|
||||
|
||||
## Native Ports (Orange Pi 5)
|
||||
|
||||
| Port | Type | Speed | Location |
|
||||
|------|------|-------|----------|
|
||||
| USB 3.0 | Type-A | 5 Gbps | Board edge |
|
||||
| USB 2.0× Type-A | 480 Mbps | Board edge |
|
||||
| USB-C | Power + DisplayPort | 5 Gbps | Power input |
|
||||
|
||||
**Total native USB:** 3 ports (1× USB 3.0, 2× USB 2.0)
|
||||
|
||||
This is insufficient for a cyberdeck with multiple peripherals.
|
||||
|
||||
---
|
||||
|
||||
## USB Hub Solution
|
||||
|
||||
### Why Powered Hub
|
||||
|
||||
| Hub Type | Power Source | Issues |
|
||||
|----------|--------------|--------|
|
||||
| Bus-powered | Draws from OPi5 | Voltage drops, instability |
|
||||
| **Self-powered** | External 5V supply | **Stable, reliable** |
|
||||
|
||||
**Orange Pi 5 USB power budget:** ~900mA total across all ports.
|
||||
|
||||
**Device power draw:**
|
||||
|
||||
| Device | Draw |
|
||||
|--------|------|
|
||||
| USB SSD | 500-1000mA |
|
||||
| WiFi dongle | 200-500mA |
|
||||
| Keyboard | 50-100mA |
|
||||
| Mouse | 50-100mA |
|
||||
| Webcam | 250-500mA |
|
||||
|
||||
**Conclusion:** Bus-powered hub will cause brownouts. Use powered hub.
|
||||
|
||||
---
|
||||
|
||||
## Hub Options
|
||||
|
||||
### Consumer-Grade
|
||||
|
||||
| Model | Ports | Power | Cost |
|
||||
|-------|-------|-------|------|
|
||||
| Sabrent 7-Port USB 3.0 | 4× 3.0 + 3× 2.0 | Barrel jack | $20-25 |
|
||||
| Anker 7-Port USB 3.0 | 7× 3.0 | Barrel jack | $25-30 |
|
||||
| Anker 4-Port USB 3.0 | 4× 3.0 | Barrel jack | $15-20 |
|
||||
|
||||
### Industrial
|
||||
|
||||
| Model | Ports | Power | Cost |
|
||||
|-------|-------|-------|------|
|
||||
| USB Hub PCB (GL850G) | 4× 2.0 | External 5V | $8-12 |
|
||||
| Industrial USB 3.0 Hub | 4-7× 3.0 | External 5V | $15-30 |
|
||||
|
||||
### Recommendation
|
||||
|
||||
**Sabrent 7-Port USB 3.0 Powered Hub**
|
||||
|
||||
- 4× USB 3.0 + 3× USB 2.0
|
||||
- External 5V barrel jack
|
||||
- Vertical orientation (compact)
|
||||
- ~$20-25
|
||||
|
||||
---
|
||||
|
||||
## Connection Diagram
|
||||
|
||||
```
|
||||
┌─────────────────┐
|
||||
│ Orange Pi 5 │
|
||||
│ │
|
||||
│ USB 3.0 ───────┼─────┐
|
||||
│ USB 2.0 ───────┼──┐ │
|
||||
│ USB 2.0 ───────┼──┼─┐│
|
||||
│ │ │ ││
|
||||
└─────────────────┘ │ ││
|
||||
│ ││
|
||||
┌────────────────────┘ ││
|
||||
│ ││
|
||||
▼ ││
|
||||
┌─────────────────────┐ ││
|
||||
│ Powered USB Hub │ ││
|
||||
│ (7-port) │ ││
|
||||
│ │ ││
|
||||
│ [Uplink] ◀─────────┘ ││
|
||||
│ │ ││
|
||||
│ [1] [2] [3] [4] │ ││
|
||||
│ [5] [6] [7] │ ││
|
||||
│ │ ││
|
||||
│ ┌─────────┐ │ ││
|
||||
│ │ 5V DC │◄───────┼──────────┼┼── external power
|
||||
│ └─────────┘ │ ││
|
||||
└─────────────────────┘ ││
|
||||
│ ││
|
||||
▼ ││
|
||||
┌─────────────────────┐ ││
|
||||
│ Peripherals │ ││
|
||||
│ • SSD enclosure │ ││
|
||||
│ • WiFi dongle │ ││
|
||||
│ • Keyboard/mouse │ ││
|
||||
│ • Webcam │ ││
|
||||
│ • Misc USB │ ││
|
||||
└─────────────────────┘ ││
|
||||
││
|
||||
Native ports still available: ││
|
||||
• 2× USB 2.0 (keyboard, mouse) ◄─┘│
|
||||
• 1× USB-C (power input) ◄──┘
|
||||
```
|
||||
|
||||
---
|
||||
|
||||
## Port Allocation
|
||||
|
||||
### After Hub
|
||||
|
||||
| Port |Location | Purpose | Speed |
|
||||
|------|----------|---------|-------|
|
||||
| Hub Port 1 | Hub | USB SSD | 5 Gbps |
|
||||
| Hub Port 2 | Hub | Data transfer | 5 Gbps |
|
||||
| Hub Port 3 | Hub | Data transfer | 5 Gbps |
|
||||
| Hub Port 4 | Hub | Data transfer | 5 Gbps |
|
||||
| Hub Port 5 | Hub | WiFi dongle | 480 Mbps |
|
||||
| Hub Port 6 | Hub | Bluetooth dongle | 480 Mbps |
|
||||
| Hub Port 7 | Hub | Misc peripheral | 480 Mbps |
|
||||
| Native USB 2.0 | OPi5 | Keyboard | 480 Mbps |
|
||||
| Native USB 2.0 | OPi5 | Mouse | 480 Mbps |
|
||||
|
||||
**Total available:** 9 ports (7 from hub + 2 native USB 2.0)
|
||||
|
||||
### Estimated Usage for Cyberdeck
|
||||
|
||||
- 1× USB SSD (data storage)
|
||||
- 1× WiFi dongle
|
||||
- 1× Keyboard
|
||||
- 1× Mouse
|
||||
- 1× Webcam (optional)
|
||||
- 4× Expansion ports
|
||||
|
||||
---
|
||||
|
||||
## Panel-Mount Options
|
||||
|
||||
For a permanent cyberdeck build, mount USB ports on the case face.
|
||||
|
||||
### Method 1: Panel-Mount Cables
|
||||
|
||||
Pre-made cables with panel-mount USB-A connectors:
|
||||
|
||||
- [Panel mount USB-A extension](https://www.amazon.com/s?k=panel+mount+usb+extension) (~$10-15 for 4-pack)
|
||||
- [Panel mount USB-C](https://www.amazon.com/s?k=panel+mount+usb+c) (~$10-15 for 2-pack)
|
||||
|
||||
**Setup:**
|
||||
1. Mount connectors in case face
|
||||
2. Run cables inside to hub
|
||||
3. Secure hub internally
|
||||
|
||||
### Method 2: Industrial Hub PCB
|
||||
|
||||
Bare hub PCB designed for integration:
|
||||
|
||||
- Mount PCB inside case
|
||||
- Wire panel connectors directly to PCB
|
||||
- Cleaner internal layout
|
||||
|
||||
**Parts:**
|
||||
- USB hub PCB (GL850G or similar): $8-15
|
||||
- Panel-mount USB connectors: $10-15
|
||||
- Meanwell 5V 3A PSU: $8
|
||||
|
||||
**Total:** ~$25-35
|
||||
|
||||
---
|
||||
|
||||
## Power Considerations
|
||||
|
||||
### Hub Power Requirements
|
||||
|
||||
| Specification | Value |
|
||||
|---------------|-------|
|
||||
| Input voltage | 5V DC |
|
||||
| Current | 2-4A (depending on devices) |
|
||||
| Connector | Barrel jack (usually) |
|
||||
|
||||
### Powering the Hub
|
||||
|
||||
| Method | Notes |
|
||||
|--------|-------|
|
||||
| Wall adapter (included) | Simple, separate power brick |
|
||||
| 5V from cyberdeck PSU | Integrated, requires 5V rail |
|
||||
| USB-C PD | Requires USB-C hub with PD pass-through |
|
||||
|
||||
### Power Budget
|
||||
|
||||
| Component | Draw |
|
||||
|-----------|------|
|
||||
| Orange Pi 5 (16GB) | 5-8W |
|
||||
| USB hub (self-powered) | 1-2W |
|
||||
| USB SSD | 2-4W |
|
||||
| Peripherals | 1-2W |
|
||||
| **Total** | **9-16W** |
|
||||
|
||||
For portable build: 10,000-20,000 mAh battery pack with PD output.
|
||||
|
||||
---
|
||||
|
||||
## GPIO Alternative
|
||||
|
||||
**USB hubs do not require GPIO.**
|
||||
|
||||
GPIO (26-pin header) is for:
|
||||
- Serial console (TX/RX)
|
||||
- I2C devices (sensors, displays)
|
||||
- SPI devices (LCD, flash)
|
||||
- PWM (fan speed, servos)
|
||||
- Digital I/O (buttons, LEDs)
|
||||
|
||||
If you want internal hub without USB cable:
|
||||
- Use GPIO for power only (5V/GND)
|
||||
- Still need USB data connection
|
||||
|
||||
---
|
||||
|
||||
## Cost Summary
|
||||
|
||||
| Item | Cost |
|
||||
|------|------|
|
||||
| Powered USB 3.0 hub (7-port) | $15-25 |
|
||||
| Panel-mount cables (optional) | $10-20 |
|
||||
| **Total** | **$15-45** |
|
||||
|
||||
---
|
||||
|
||||
## Recommended First Iteration
|
||||
|
||||
1. Buy Sabrent 7-port powered hub ($20)
|
||||
2. Plug into Orange Pi 5 USB 3.0 port
|
||||
3. Use external power adapter
|
||||
4. Done — no custom wiring needed
|
||||
|
||||
**When you're ready for permanent build:**
|
||||
- Removehub from plastic case
|
||||
- Mount PCB inside cyberdeck
|
||||
- Wire panel-mount connectors
|
||||
- Power from internal 5V rail
|
||||
Loading…
Add table
Add a link
Reference in a new issue