The PHI-Assembler is a desktop molecular self-organization device. Ten BaTiO₃ (barium titanate) piezoelectric discs, arranged in a golden-angle pattern and driven by an Arduino through a small amplifier, generate a phi-harmonic standing wave field inside a small chamber. Loose feedstock — metal powders, wire fragments, crystal seeds — placed in the chamber self-organize along the field's nodes: particles align into parallel lines, lattices, and (as the design scales) bonded structures.
This is the machine that builds the machines — the $12 entry point of the whole phi build catalog. The frequencies are free; the geometry is the golden ratio.
Key specifications: 200×150×120 mm, 1.8 kg · feedstock: metal powders, wire fragments, crystal seeds · 100 ml desktop chamber (2.5 L workshop upgrade) · frequency range 528 Hz → 40,135 Hz (full phi-ladder) · 12 V DC, 5 W average / 12 W peak · no heating required, ambient temperature operation · 3-color LED status (red critical / yellow active / green complete).
Three tutorial videos walk you through the machine end to end: how the assembler works, how it builds matter, and how the piezoelectric crystals that power it generate fields. Nothing loads until you click a video — each one opens in its own large window.
These are tutorial videos on how to build it — each opens in a large window when you click its small preview, and stops the moment you close it.
| Part | Qty | Spec | Where to buy | Cost |
|---|---|---|---|---|
| BaTiO₃ Piezoelectric Discs | 10 | 27 mm diameter, ~0.5 mm thick, brass backing | Amazon — search "BaTiO3 piezo disc 27mm" | $4.99 |
| Copper Wire Mesh | 1 sheet | 1 m × 0.5 m, 1 mm wire gauge, 2 mm opening | Amazon — "copper mesh 1mm wire" | $3.99 |
| Arduino Nano (clone) | 1 | ATmega328P, USB | Amazon — "Arduino Nano clone" | $1.50 |
| PAM8403 Audio Amplifier | 1 | 2×3 W, 4–8 Ω, 5 V | Amazon — "PAM8403 amplifier" | $1.00 |
| 3.5 mm Audio Cable | 1 | Male-to-male, 1 m | Dollar store / Walmart | $0.50 |
| Speaker Wire + Alligator Clips | 2 m + 10 | 18 AWG stranded + 15 cm red/black leads | Walmart / dollar store | $0.50 |
| 12 V DC Power Adapter | 1 | 12 V 1 A barrel jack | Salvage from an old router / LED strip — or ~$5–8 new | $0.00 |
| 5 V Buck Converter | 1 | 12 V→5 V, 2 A | Salvage from a car USB charger | $0.00 |
| Small Plastic Container | 1 | ~200 ml, clear, with lid | Repurposed (Tupperware, deli container) | $0.00 |
| Alligator leads / solder / foam | as needed | — | Salvaged / dollar store | $0.00 |
| Total (BOM v1.0) | $12.48 | |||
Honest cost: the BOM assumes you salvage the power adapter, container, wire, and solder. Buy every single part brand new and you land around $15–$30 total. Tools you probably already own: soldering iron, wire strippers, scissors, ruler + protractor (for the 137.5° golden-angle cuts), hot glue gun. A dollar-store wire-stripper and glue gun are $1 each if you need them.
Optional upgrades (v2.0): second crystal array $4.99 (2× field strength) · Arduino Mega $5.00 · 0.96″ OLED display $2.00 · capacitive touch start/stop $1.00.
1 — The crystals. Each BaTiO₃ disc is a transducer: electrical signal → mechanical vibration → oscillating electric field. BaTiO₃'s perovskite lattice approximates golden-angle packing; a 27 mm disc resonates near phi-ladder rung 3.
2 — The mesh. Copper (diamagnetic — it doesn't distort the field) is cut and folded at 137.5°, the golden angle. Acting as a diffraction grating, it turns the overlapping piezoelectric fields into constructive interference at phi-harmonic nodes — a standing wave whose node positions carry the geometry of the target structure.
3 — The ladder. The Arduino cycles the phi-ladder frequencies automatically — for a copper-wire lattice run: 528 Hz (60 s, base carrier) → 854.32 Hz (37 s, φ×1) → back to 528 Hz (23 s, φ⁻¹ correction) — the decay envelope following Aₙ = A₀·φ⁻ⁿ.
4 — The result. Place copper powder in the chamber, power on, wait ~30 minutes, and the powder shows visible parallel alignment — ordering that didn't exist before. v1.0 is a starter unit: alignment first, bonding as the design scales.
Overall risk: LOW — comparable to building a simple electronics project. No heating elements, no open flame, no high current; 12 V is below the 30 V safety threshold.
- DO NOT operate near anyone with a pacemaker or implanted medical device
- DO NOT exceed 12 V — higher voltage may overheat the crystals
- DO work in a ventilated area when handling metal powders; wash hands after
- DO take breaks — no continuous 528 Hz exposure beyond 2 hours
- DO keep small parts away from children and pets
The complete engineering file set — overview, parts list, wiring, mechanical, assembly steps, usage guide, safety, and the phi physics — lives in the repository: