Specifications
Every line carries its status
We would rather show you a tag than a promise. Built means it runs on our engineering rig today. Production unit means it is designed into the unit now in build and has not yet passed its tests. Design target is a number we are designing to, not a result we have measured. Tags come off as the tests pass.
Last verified against our engineering record on 2026-09-27.
The system
What arrives, and how it grows.
| Item | Value | Status |
|---|---|---|
| In the box | The controller and dosing unit, one nutrient reservoir with its lid, and one tower of five segments. — expandable — add towers, choose segments | Built |
| Tower segments | Two-, three- and four-pot segments; mix them on one tower. Segments lock 60° apart so plant sites stagger up the column. | Built |
| Stack joint | A three-lug bayonet at every joint — reservoir, lid, each segment. Drop on, quarter-turn, seated. — designed; first articles printing | Production unit |
| Net pots | Bayonet into the segment port: drop in, twist. | Production unit |
| Watering | Recirculating top-fed drip. Water is pumped to the top of the tower and falls back through the root zone to the reservoir; roots sit in air with a nutrient film, so no air stone is required. | Built |
| Reservoir | About 20 L, about 15 L working volume, Ø200 mm lid. | Design target |
| Materials | PETG tower and reservoir. Controller housing in ASA or PETG, matte black, UV clear coat. Stainless fill valve. | Built |
| Placement | Designed for outdoor and greenhouse use. — not yet field-proven | Design target |
The instrument
What it measures and what it does about it.
| Item | Value | Status |
|---|---|---|
| Sensors | pH and conductivity (EC) — industrial RS485 probes; water temperature; water level; air temperature and humidity. | Built |
| Dosing | Three geared peristaltic pumps: Nutrient A, Nutrient B, pH Down. 40 mL/min, PharMed BPT tubing. — dosing logic runs on the bench rig today | Production unit |
| Chemistry separation | Calcium (A) and phosphate/sulfate (B) never share a bottle, pump, tube or entry point — the lid entries are 110 mm apart. A, settle, B, settle, then pH. | Built |
| Control | Setpoint control for pH and EC with lockouts and settle windows; automatic refill on level; recirculation timer; AUTO and MANUAL modes. | Built |
| Interlocks | Nutrients before acid. No dosing below a level floor. Hourly cap on nutrient volume and a hard cap on every shot. Refill limited by level and by run time. Readings are median-filtered and held for 30 s before any automatic dose. | Built |
| Water top-up | RO or tap inlet with a normally-closed stainless solenoid. Loses power, closes. — valve in hand | Production unit |
| Recirculation pump | 24 V brushless, 410 GPH class. | Production unit |
| Dose resolution | About 3 mL per 5 s shot; about 1 mL at the shortest shot. — flow measurement pending | Design target |
| pH band | 5.5–6.5 by default; setpoints are yours to change. | Built |
The controller
| Item | Value | Status |
|---|---|---|
| Display | 7" 1024 × 600 capacitive touchscreen. Live gauges, 6 h / 1 d / 1 w / 1 mo charts, setpoints, guided calibration, manual pump control. — the bench rig runs the same UI on a 5" panel | Production unit |
| Autonomy | Everything runs on the unit. No hub, no subscription, no account needed to grow. | Built |
| Connectivity | Wi-Fi; over-the-air updates. | Built |
| Power | One external 24 V UL-listed supply. No mains voltage inside the enclosure. — bench rig is 12 V | Production unit |
| Enclosure | One wall-mounted housing, 240 mm wide, for controller, dosing and the ambient sensor. Continuous cord seal. — geometry not frozen | Production unit |
| Ingress | Sealed to an IP65 design target. Connectors rated IP65/IP67 mated. — not yet spray-tested | Design target |
| Connectors | Industrial plug-in connectors: one family for power and loads, a keyed M12 family for probes. The two cannot be cross-mated. | Production unit |
| Sensor refresh | 1 s on the display. | Built |
Where it stands
Every row above carries a tag. These are the tests that retire them.
| Item | Value | Status |
|---|---|---|
| Bench rig | The control loop — sensing, dosing logic, refill, interlocks, the touchscreen UI — has run on the engineering rig since spring. | Built |
| Production controller | 7" ESP32-P4 panel and the production carrier board. — panel validation next | Pending test |
| Seven-day soak | The production unit runs seven days with plants and no faults before we take a single order. | Pending test |
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