make this for me now
# Device Summary & Specification Sheet
## 1. Overview
A rugged, Arduino-Uno-and-Raspberry-Pi-style single-board micro-PC featuring:
- Smartphone-class CPU (Snapdragon 990)
- USB-C Power Delivery + 4×AA alkaline backup + ambient-light harvester
- On-board Arduino-Uno-compatible ATmega328P
- External NVMe SSD via USB3 bridge & optional Thunderbolt 3 eGPU support
- 5× USB 3.0 ports, HDMI in/out, Gigabit Ethernet & SFP fiber, Wi-Fi, Bluetooth, LoRa
- 0.96″ OLED status display, 3.5 mm audio jack with codec
---
## 2. Key Specifications
| Category | Specification |
|--------------------|-------------------------------------------------------------------------------|
| CPU | Snapdragon 990, octa-core up to 2.84 GHz |
| Memory | 6 GB LPDDR4x DRAM |
| Storage Interface | PCIe Gen3 ×4 → M.2 NVMe + USB 3.1 Gen1 bridge |
| MCU | ATmega328P (Arduino-Uno-compatible) |
| Power Input | USB-C PD up to 20 V/5 A; 4×AA alkaline backup; ambient-light photodiode boost |
| Power Rails | 12 V, 5 V, 3.3 V, 1.8 V, 1.2 V via buck/buck-boost regulators |
| USB Hub | 5× USB 3.0 downstream ports |
| Display | 0.96″ 128×64 OLED via I²C/SPI |
| Networking | 1 × Gigabit RJ45; 1 × SFP fiber; Wi-Fi 802.11ac + Bluetooth; LoRa SX1276 |
| Video I/O | HDMI 2.0 input (RX) & output (TX) |
| Audio | 3.5 mm jack + TLV320AIC3101 codec; Bluetooth audio |
| Form Factor | Raspberry Pi–style header + Arduino-Uno shield headers; 4× standoff mounts |
---
## 3. Complete Parts List
| Part | Function | Qty |
|------------------------------------------------------------------------------------------------|-----------------------------------------------|-----|
| [Snapdragon 990](https://www.flux.ai/search?type=components&q=Snapdragon%20990) | Main application CPU | 1 |
| [LPDDR4x DRAM](https://www.flux.ai/search?type=components&q=LPDDR4x%20DRAM) | System memory | 1 |
| [eMMC 64GB](https://www.flux.ai/search?type=components&q=eMMC%2064GB) | On-board storage | 1 |
| [M.2 NVMe Connector](https://www.flux.ai/search?type=components&q=M.2%20NVMe%20Connector) | External SSD interface | 1 |
| [JMS583](https://www.flux.ai/search?type=components&q=JMS583) | PCIe→USB 3.1 bridge for NVMe | 1 |
| [Titan Ridge](https://www.flux.ai/search?type=components&q=Titan%20Ridge) | Thunderbolt 3/eGPU controller | 1 |
| [STUSB4500](https://www.flux.ai/search?type=components&q=STUSB4500) | USB-C Power-Delivery controller | 1 |
| [LTC4412](https://www.flux.ai/search?type=components&q=LTC4412) | Ideal-diode OR-ing | 1 |
| [LTC3108](https://www.flux.ai/search?type=components&q=LTC3108) | Ambient-light (solar) energy harvester | 1 |
| [Battery Holder 4×AA](https://www.flux.ai/search?type=components&q=Battery%20Holder%204xAA) | Alkaline backup power | 1 |
| [TPS53318](https://www.flux.ai/search?type=components&q=TPS53318) | 6 V→5 V synchronous buck regulator | 1 |
| [MCP1700-3302E/TO](https://www.flux.ai/search?type=components&q=MCP1700-3302E/TO) | 6 V→3.3 V LDO | 1 |
| [TPS63060](https://www.flux.ai/search?type=components&q=TPS63060) | Buck-boost for 12 V rail (eGPU power) | 1 |
| [ATmega328P](https://www.flux.ai/search?type=components&q=ATmega328P) | Arduino-Uno microcontroller | 1 |
| [ESP32-WROOM-32](https://www.flux.ai/search?type=components&q=ESP32-WROOM-32) | Wi-Fi + Bluetooth co-processor | 1 |
| [SX1276](https://www.flux.ai/search?type=components&q=SX1276) | LoRa transceiver | 1 |
| [TUSB8041](https://www.flux.ai/search?type=components&q=TUSB8041) | 5-port USB 3.0 hub IC | 1 |
| [Ethernet PHY](https://www.flux.ai/search?type=components&q=Ethernet%20PHY) | Gigabit Ethernet physical transceiver | 1 |
| [SFP Cage](https://www.flux.ai/search?type=components&q=SFP%20Cage) | Fiber-optic SFP module connector | 1 |
| [TDA19978](https://www.flux.ai/search?type=components&q=TDA19978) | HDMI 2.0 receiver (input) | 1 |
| [TFP410](https://www.flux.ai/search?type=components&q=TFP410) | HDMI 2.0 transmitter (output) | 1 |
| [TLV320AIC3101](https://www.flux.ai/search?type=components&q=TLV320AIC3101) | Audio codec for 3.5 mm jack & Bluetooth audio | 1 |
| [Audio Jack 3.5mm](https://www.flux.ai/search?type=components&q=Audio%20Jack%203.5mm) | Headphone/mic port | 1 |
| [SSD1306 OLED](https://www.flux.ai/search?type=components&q=SSD1306%20OLED) | Status display | 1 |
---
## 4. High-Level Design & Implementation Steps
1. **Schematic Creation**
- Section off blocks: CPU + memory, power-supply, NVMe/USB bridge, MCU, wireless, USB hub, video, audio, I/O headers.
- Place all parts from the list and wire per respective datasheet reference circuits.
2. **Power System**
- Implement USB-C PD with STUSB4500 → buck/buck-boost & LDO rails.
- Add LTC4412 to OR-ing battery pack into 6 V bus.
- Include LTC3108 harvest input to 6 V bus (no recharge to AA).
- Add decoupling & bulk caps per regulator datasheets; PTC fuses & ESD diodes on inputs.
3. **SoC & High-Speed Interfaces**
- Break out Snapdragon 990 BGA with DDR4 routing (point-to-point).
- Route PCIe Gen3 lanes to M.2 slot via JMS583 and to Titan Ridge for TB/eGPU.
- Follow high-speed layout guidelines: impedance, length matching, EMI filters.
4. **MCU & Expansion Headers**
- Place ATmega328P with UNO-style 2.54 mm headers; add ISP 6-pin, I²C pull-ups, reset circuit.
5. **Connectivity Blocks**
- USB hub: TUSB8041 + ESD + chokes → five USB-A 3.0 ports.
- Ethernet: RJ45 + magnetics + PHY; SFP cage + PHY/SFP interface.
- Wireless: ESP32 module pad + SX1276 + antenna matching; program pads.
6. **Video & Audio**
- HDMI RX (TDA19978) & TX (TFP410) blocks with TMDS ESD & termination.
- Audio codec + 3.5 mm jack; route differential audio lines; add ESD.
7. **Display & Indicators**
- SSD1306 OLED on I²C; add pull-ups & backlight power if needed.
- LEDs for power, charge, status.
8. **PCB Layout & Mechanical**
- Follow Raspberry Pi 2×20 header footprint & UNO shield hole pattern.
- Add reinforcement for rugged use; standoffs at corners.
- Define 4-layer stackup:
• Top: signal
• L2: GND
• L3: PWR
• Bottom: signal
9. **DRC/ERC Reviews**
- Run ERC for decoupling, pull-ups, power nets.
- Run DRC for high-speed clearance, differential pairs, via aspect ratios.
10. **Fabrication & Testing**
- Export Gerbers, IPC-2581, BOM.
- Prototype assembly; verify power sequencing, rails, interfaces.
- Functional tests: USB-C PD negotiation, NVMe throughput, eGPU over TB3, wireless comm, audio, OLED.
---
This spec sheet and part list should guide your Flux schematic and PCB layout workflow through to fabrication and validation. Let me know if you’d like to deep-dive into any specific block or review datasheet details next!
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