Meteo Module v2

MeteoModule v2 — ESP32-C3 HomeKit Weather Station

A compact DIY weather station with Apple HomeKit integration, featuring an upgraded ENS160+AHT21 air quality sensor for TVOC and eCO₂ monitoring alongside temperature and humidity.

Features

• Apple HomeKit — appears as a Bridge in the Home app with separate Temperature, Humidity, Air Quality, and CO₂ accessories
• OLED display — 128×64 SSD1306, widget-style UI with icons
• 3 screens: Temperature + Humidity / Air quality (TVOC + eCO₂) / HomeKit pairing code
• Touch button — cycle screens, toggle display on/off
• Scheduled display — automatically turns the screen on/off based on time of day (NTP)
• ENS160 warm-up indicator — display shows "wait..." until the sensor is ready
• AHT21-only mode — disable ENS160 with a single #define for a simpler temperature/humidity-only build
• Calibration offsets — adjust temperature and humidity readings to match your environment

Electronics

Firmware

Full source code, wiring diagrams, and configuration reference:

→ github.com/doka312/MeteoModule

WiFi is configured via Serial Monitor (type W). HomeKit pairing code: 466-37-726.