Pass five checks first.
- Fixed 4-key / 4-pixel map
- Versioned HELLO / READY handshake
- Three atomic אור state frames
- Fail-closed 25% brightness ceiling
- 2,000 ms watchdog and fresh-handshake recovery
PHYSICAL INTERFACE / DETERMINISTIC RUNTIME / BUILDABLE NOW
The Tree becomes a machine.
QEC-1 is a 600 × 420 mm tabletop control surface for the canonical Quantum Etz Chaim runtime: 24 keys, 56 addressable indicators, one auditable state, and a complete reproducible trace.
Build the four-key prototype →
Open full build guide
Open engineering plates
Open fabrication pack
Machine-readable model
Scientific boundary: QEC-1 is a classical deterministic control-and-display machine. It contains no qubits and makes no claim of superposition, entanglement, quantum error correction, or quantum speedup.
CURRENT BUILD MILESTONE / QEC-1P
Four keys before twenty-four.
The reduced bench harness is now a complete build gate, not a suggestion. It fixes the Pico pin map, firmware, protocol direction, low-voltage wiring, browser proof sequence, and written acceptance record before the full panel becomes expensive to change.
PLATE 07 / BENCH WIRINGOpen exact SVG ↗
Tabletop demonstrator
Pi host, Pico panel controller, Hebrew keys, Tree/path/register indicators, local display, and versioned USB protocol.
Hardware in the loop
Add an electrically isolated FPGA or RFSoC loopback target for protocol and timing experiments. This tier remains classical.
Reviewed backend
Exchange versioned jobs and evidence with independently operated RF, cryogenic, calibrated quantum-control equipment.
ENGINEERING PLATE SET
Six drawings. One fixed model.
The system boundary establishes ownership. The wiring plate establishes safe low-voltage power and signal paths. The panel plate fixes overall dimensions, field placement, and canonical indicator order. The bench plate proves the reduced harness first. Two full-scale templates control the final panel and its 1.5 mm key subplate.
FIXED PHYSICAL MODEL
Count every control and light.
The address map is part of the hardware contract: ten sefirot, one Da’at boundary, twenty-two paths, and twenty-three registers. Aleph Olam remains display-only and firmware-locked.
600 × 420PANEL / MM
56RGB INDICATORS
24MATRIX KEYS
23STATE REGISTERS
Host plane
Raspberry Pi 5 runs the canonical engine, interface, trace store, and optional local display. It uses its own certified 5 V / 5 A USB-C supply and active cooling.
Panel plane
Raspberry Pi Pico 2 scans the 6 × 4 diode key matrix, drives indicators through a 5 V logic shifter, and enters a visible fault state when its host link fails.
CORE BILL OF MATERIALS
Preferred parts with substitution rules.
The versioned BOM names manufacturer parts and a dated reference cost. It is not a live quote: verify stock, price, electrical rating, and every footprint before ordering or cutting.
| QTY | COMPONENT | REQUIREMENT | ROLE |
|---|---|---|---|
| 1 | Raspberry Pi 5 + Active Cooler | SC1112 + SC1148 | Canonical host runtime |
| 1 | Raspberry Pi Pico 2 | SC1631 | Panel controller |
| 1 + 1 | Official Pi 27 W PSU + MEAN WELL panel PSU | SC1154 + GST40A05-P1J | Separate host and panel domains |
| 12 packs | SparkFun 5 mm addressable RGB LEDs | COM-12986 / 60 pixels, 4 spare | Nodes, paths, registers |
| 24 + 24 | CHERRY tactile switches + Vishay diodes | MX2A-G1NB + 1N4148-TAP | 6 × 4 key matrix |
| 1 | TI SN74AHCT125N | DIP-14, 3.3 V to 5 V pixel logic | Pixel data level shifting |
| 1 + 1 | 1,000 µF capacitor + 330–470 Ω resistor | 6.3 V minimum capacitor | Pixel rail and data protection |
| 1 | Fused, switched panel inlet | 5 A DC rating | Panel branch protection |
POWER BOUNDARY
No mains inside. No shared positive rail.
The Pi and panel have separate external 5 V supplies. Logic grounds meet at the level-shifter distribution point; positive rails never meet. A 5 A fuse sits immediately after the panel inlet.
Panel budget
56 × 0.060 A = 3.36 A theoretical full-white indicator load. The panel domain is sized for the full theoretical load while firmware caps global brightness at 25%.
Protection details
- 1,000 µF capacitor across the panel rail near pixel 0
- 330–470 Ω resistor at the first data input
- Power injection at pixel 0 and near register pixel 33
- Ground first on connection; ground last on disconnection
ASSEMBLY SEQUENCE
Prove it small. Then fabricate.
The final panel is the last irreversible step. A reduced four-key, four-pixel harness must pass protocol, brightness, electrical, and fault tests before full wiring or enclosure cutting.
Bench proof
Pi, Pico, four keys, four pixels, level shifter, fused panel supply, handshake, and fault behavior.
Full harness
Build four keyed indicator sections, the diode matrix, distribution board, and low-brightness walking test.
Enclosure
Verify a disposable 1:1 template, then fabricate, mount, ventilate, strain-relieve, and label.
Runtime integration
Step and run canonical אור seed 09; compare trace hash and manifestation checksum.
RELEASE GATE
Acceptance is evidence.
The machine is complete only when the physical display reproduces the canonical software result and every electrical or protocol failure leaves the last valid state unchanged.
- Certified, labeled, strain-relieved external supplies
- No mains voltage inside the enclosure
- Panel polarity verified before load connection
- 5 A panel fuse and working master switch
- All 56 addresses pass a walking-one test
- Every key emits one debounced event
- Aleph Olam has no physical input path
- Invalid protocol frames fail closed
- USB or panel-power loss creates visible fault
- אור seed 09 reproduces trace and checksum
- Ventilation remains clear after closure
- Measured wiring matches the as-built record
Component design basis: official Raspberry Pi 5 and Pico 2 specifications; Adafruit’s NeoPixel best practices; and, for the future laboratory boundary only, the open-source QICK control stack.