Phase 1 - Lab validation
Phase 1 is the bench prototype. It is intentionally simple: prove that the electronics, firmware, calibration workflow, and Gratheon telemetry ingestion work before spending effort on outdoor mechanics.
Pages in this phase
- Product description - scope, wiring overview, calibration, and acceptance criteria.
- Bill of materials - parts to buy for the bench build.
- System overview - high-level logical and physical architecture.
- Wiring diagrams - detailed pin-by-pin wiring for every subsystem.
Wiring diagram quick links
| Diagram | What it shows | When to read it |
|---|---|---|
| System overview | Full system picture with all chains (power, weight, temperature, future expansion) | Start here — gives the big picture before wiring anything |
| Complete lab wiring | One interactive schematic/3D view, complete GPIO table, breadboard map, and pre-power checklist | Use this single reference while wiring the complete bench |
Phase outcome
A developer can connect ESP32, HX711, one load cell, and DS18B20 on a desk, flash firmware, calibrate with a known weight, and see accepted telemetry in Gratheon.