94 lines
No EOL
3.7 KiB
Markdown
94 lines
No EOL
3.7 KiB
Markdown
# K501U Cyberdeck
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A cyberdeck built from salvaged ASUS K501U laptop components and Orange Pi 3B SBC.
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## Project Status
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**Phase:** Recovery — eMMC boot broken after Armbian SD card's u-boot overwrote bootloader sectors
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- [x] K501U salvage analysis complete
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- [x] Build design finalized (wooden case, TrackPoint keyboard, IP5389 power, HDMI switch, port layout)
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- [x] Display identified — eDP controller board ordered ($35)
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- [x] SBC: Orange Pi 3B 8GB/256GB — purchased and delivered
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- [x] SBC boot from eMMC — ~~verified~~ **BROKEN by Armbian SD card boot attempt**
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- [x] Display controller board — awaiting delivery (~2 weeks)
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- [x] Power system — Banggood board + cells + amp ordered Jun 3
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- [ ] Bootloader repair — pending (see docs/armbian-install.md for current state)
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- [ ] Case fabrication
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- [ ] Full assembly and software configuration
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## Components
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### Salvaged from ASUS K501U
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- Display: Innolux N156HGE-EAB (Rev. C2)
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- Controller board ordered
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- Hinge mechanism from K501U lid
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- Need to consider details of new lid
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- Cooling fans and copper heat pipe
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- If I use this I'll need to design around it
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**Not reused:**
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- RAM (DDR3L soldered, incompatible with modern SBCs)
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- SSD (already repurposed for other use)
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- WiFi card (OPi3B has built-in WiFi+BT — no external card needed)
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- Webcam (cheap as dirt, proprietary connector)
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- Keyboard (huge pain to repurpose)
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- Motherboard (presumably zapped in an irreparable way)
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### New Components
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| Component | Selection | Status |
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|-----------|-----------|--------|
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| SBC | Orange Pi 3B (8GB, RK3566, 256GB eMMC) | Purchased ($189) |
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| Display controller | 30-pin eDP to HDMI | Ordered ($35) — arriving in ~2 weeks |
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| Storage (boot) | 256GB eMMC (onboard) | Incl. with SBC |
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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 | Reuse old external hard drive(s)? |
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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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- [Design Decisions](docs/design-decisions.md) - Build approach, nomenclature, layout
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- [Power System](docs/power-system.md) - IP5389 battery management decision
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- [Port Layout](docs/port-layout.md) - External port placement and allocation
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- [Case Design](docs/case-design.md) - Dimensional constraints, component footprint, floorplan
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- [Initial Bring-up](docs/initial-bringup.md) - First boot and hardware validation
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- [Armbian Install](docs/armbian-install.md) - Armbian on p3 with shared /boot, XFCE via startx
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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) — ordered
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### SBC
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- **Board:** Orange Pi 3B (RK3566, 8GB RAM, 256GB eMMC)
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- **Storage:** 256GB eMMC onboard + MicroSD slot + M.2 M-key
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- **USB:** 2× USB 3.0, 2× USB 2.0 native
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- **WiFi/BT:** Built-in WiFi 5 + BT 5.0 (no dongle needed)
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- **Power:** USB-C 5V/3A via IP5389 power board, 18650 cells
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- **Draw:** ~3-5W under load
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### Cost Estimate
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| Category | Cost |
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|----------|------|
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|| SBC (w/ 256GB eMMC, WiFi+BT) | $189 |
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|| Display controller | ~$24 |
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|| Storage (hub + enclosure) | ~$30 |
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|| Power system (board + cells + holders + fuse) | ~$64 |
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|| PAM8403 audio amp | ~$4 |
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|| OPi 3B metal case + fan | ~$17 |
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|| HDMI switch + panel cables + SD reader | ~$33 |
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|| **Subtotal** | **~$361** |
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(Excludes case materials and misc hardware. SBC cost is actual after tax/shipping.) |