HACK CLUB RELATEDbackup

Universal AI Terminal

A pocketable AI terminal that runs Claude Code and Ollama over LTE. Custom carrier board for a Raspberry Pi Compute Module 5, 7" AMOLED touchscreen, and its own cellular modem so it doesn't need WiFi. While a long prompt is running, you can play a game on it instead of staring at the terminal.

UPDATE: NO CELLULAR FOR NOW

UPDATE 2: ALUMINUM PLATE WILL NOT BE USED FOR NOW EITHER

Screenshots

Why I built this

I kept wanting Claude Code running when I was away from my desk, and there was no good way to do that besides carrying a laptop everywhere. There are videos all over the internet of people sleeping next to a laptop with Claude Code running waking up to accept permissions, or walking around a grocery store with their laptop open, looking crazy. I wanted something pocketable that solves that.

Chat script

chat_gemini.py is a minimal terminal chat client for talking to Gemini directly (using gemini right now to test because of free tier)

Setup:

pip install google-genai python-dotenv

Create a .env file in "Code" folder:

GEMINI_API_KEY=your-key-here

Running it:

python chat_gemini.py

Type a message, hit enter. Type exit or Ctrl+C to quit!

Hardware

88×155mm, 4-layer board (JLC04161H-3313 stackup), designed in KiCad 9. Six hierarchical schematic sheets: Power, CM5, Display, Cellular, Audio, Controls.

Compute — Raspberry Pi Compute Module 5 (8GB RAM, 64GB eMMC, WiFi). Quad-core Cortex-A76 @ 2.4GHz.

Display — DXQ7D0023, 7" AMOLED, 1080×1920, up to 165Hz variable refresh. ICNA3512 driver IC. FT3519T capacitive touch (FocalTech, I2C address 0x38). Panel connector is a Hirose FH26-39S-0.3SHW (39-pin, 0.3mm pitch); board side is a 40-pin 0.5mm ZIF (Kinghelm KH-FG0.5-H2.0-40PIN), pins 1-39 mapped straight through, pin 40 unused.

Cellular — Quectel EC25AFXGA-MINIPCIE, Cat 4 LTE, AT&T/T-Mobile certified for North America. Mini PCIe form factor so it plugs in rather than getting hand-soldered. Uses USB 2.0 internally, not PCIe.

Power — BQ25895 handles battery charging and power path from USB-C input. TPS61235P boosts battery voltage up to the 5V the CM5 needs. FUSB302 negotiates USB-PD for faster charging. Two SGM2036 LDOs step down to 3.3V and 1.8V for the display and peripherals.

I/O — Two USB-C ports: one power and USB 2.0 (charging), one full data port with USB 3.0 SuperSpeed and a two-transistor load switch for VBUS control. Three tactile buttons (volume up/down, power; though power itself uses the CM5's dedicated PWR_Button pin and needs no GPIO at all). UART debug header, Test Points for power.

Battery — 10,000mAh Li-Po.

Enclosure

3mm black-anodized aluminum plate on the back (CNC machined, doubles as a heatsink and structural backing), a thermal pad between the board and plate, then a bottom shell.

Software

Raspberry Pi OS Lite (64-bit, Bookworm), headless.

Bill of Materials

Full itemized BOM across all vendors: BOM_Universal_AI_Terminal.csv

Repository Structure

universal-ai-terminal/
├── HACK CLUB RELATED.kicad_pro    # KiCad project file 
├── HACK CLUB RELATED.kicad_sch    # schematic
├── HACK CLUB RELATED.kicad_pcb    # PCB layout
├── HACK CLUB RELATED.kicad_prl
├── HACK CLUB RELATED.step         # 3D STEP export of the board
├── power.kicad_sch                # Power sheet
├── CM5.kicad_sch                  # CM5 sheet
├── display.kicad_sch              # Display sheet
├── Cellular.kicad_sch             # Cellular sheet
├── audio.kicad_sch                # Audio sheet
├── controls.kicad_sch             # Controls sheet
├── convert_hlabels.py             # script used to convert hierarchical labels to global 
├── libs/easyeda/                  # imported EasyEDA symbols and footprints
├── production/                    # gerbers, BOM, CPL; JLCPCB Fabrication Toolkit output
├── HACK CLUB RELATED.SLDASM       # SolidWorks enclosure assembly
├── Part8.SLDPRT                   # SolidWorks enclosure part
├── BOM_Universal_AI_Terminal.csv  # full itemized BOM
├── journal.md                     # build log
├── LICENSE
└── README.md

.kicad_sch.bak files and KiCad's auto-generated -backups/ folders are local working files, not meant to be tracked — they'll stay out of future commits once .gitignore is fixed.

License

MIT