CAIBI project benchmark: ESP32 Air Quality Monitor
Prompt version 1.0

Help me build ESP32 Air Quality Monitor using the existing creator project at https://www.schematik.io/projects/build-an-esp32-air-quality-monitor. This is a CAIBI benchmark adaptation of the project build brief, not a claim about how the creator used AI.

Project context:
- A small ESP32 instrument showing temperature, humidity, pressure and a comfort label on an OLED display.
- Build context: ESP32 development board; BME280 temperature, humidity and pressure sensor; SSD1306 128 × 64 I2C OLED display; Breadboard and jumper wires; USB power and flashing connection.
- Where AI helps: Firmware changes, Threshold logic, Wi-Fi expansion, Troubleshooting.
- Physical work: Wire I2C bus, Place sensor correctly, Flash firmware, Verify readings, Build enclosure if wanted.
- Main limitation: Sensor placement affects the measurement. Putting the BME280 beside heat-producing electronics or sealing it in an unventilated enclosure undermines the result.

Read the source first. Use its published design, files, dimensions and parts as the baseline; do not redesign it unless a missing detail requires a clearly labelled proposal. If you cannot access a source or verify a revision, say so.

Provide one practical build package:
1. Design and files: explain the source design, link the original editable files, and identify missing files or modifications.
2. Parts and fabrication: give quantities, exact variants and compatibility, plus a cutting or printing list where applicable. Preserve source dimensions; flag anything unconfirmed.
3. UK and US purchasing: direct product links, checked dates, stock, pack sizes, taxes, delivery and regional costs. Mark unverifiable details as unknown; do not invent links, prices or availability.
4. Assembly: an ordered guide covering fabrication, fitting, wiring or software as applicable, setup, checks and troubleshooting.
5. Cost and time: separate parts, fabrication, delivery, hands-on time and machine time, with assumptions and exclusions.
6. Function and ease: a test plan for the project's stated purpose, likely difficulties, required skills and any corrections or limitations.

Keep source facts, your proposals and items needing physical verification distinct. An estimate is not a measured build result. Do not claim to have built or tested hardware. Include failed attempts and omissions. If a section does not apply, say why.

Use the source as accessed during this run and record its revision or access date. The prompt is fixed; the linked source can change.