ESP32 Smart Coffee Scale Design
Thought
Session ended.
Work completed:
- Updated project description and added system architecture diagram.
- Placed core parts: ESP32-C3FH4 (U1), NAU7802SGI (U2), NCP176BMX330TCG (U4), RH100-40MHz crystal (Y1), 2450AT18B100E antenna (ANT1), MSD-4-A microSD connector (J1), 694101308002 barrel jack (J2), generic passives (C1–C4, L1), and ground.
- Established basic 5 V and GND nets and connected decoupling and power pins.
Work not done (requires user action):
- TPS62130ARGTR buck converter and associated inductor/Cout
- USB-C receptacle and CC resistor network for power-only USB-C
- 0532610471 load-cell connector and front-end filtering network
- RF matching LC network and keep-out zone implementation
- Rail-by-rail power-budget documentation and regulator sizing
- I²C pull-up resistors
Success criteria status:
- Core components integrated: Partially met.
- Power subsystem design: Not met (buck converter, USB-C missing).
- RF network: Not implemented.
- Load-cell interface: Connector and filters missing.
- Full documentation: Pending.
Next steps: add the missing power converter, connectors, RF matching components, pull-ups, and complete documentation for production readiness.
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