Gadget CO₂ Output Guide: Buzzer, NeoPixel and Relays
Gadget CO₂ Output Guide. Connect a buzzer, WS2812B NeoPixel strips and relays to your high-quality CO₂ monitor: set up audible and visual alarms with hysteresis.
CO2 Gadget – Guides
CO2 Gadget Web Interface Guide: Dark Mode, Charts and Screenshots
All the pages of the CO2 Gadget web interface explained: Home, Charts with CSV/JSON export, FRC Calibration, Low Power, Preferences, Status and OTA.
Guide to Sensors Compatible with CO2 Gadget: CO2, PM and Environmental Sensors
Guide to sensors compatible with CO2 Gadget. All supported CO₂, PM and environmental sensors: SCD30, SCD40, SCD41, MH-Z19, CM1106, S8, SPS30 and more.
CO2 Gadget MQTT Guide: Home Assistant, Alarms and Remote Commands
CO2 Gadget MQTT Guide. Integrate your high-quality CO₂ sensor with Home Assistant: publish CO₂, temperature, humidity, battery level and PM data; receive remote commands; set up alarms with hysteresis; and enable automatic discovery.
CO2 Gadget WiFi Guide: Connection, Website and API
CO2 Gadget WiFi Guide. Learn how to connect your high-quality CO₂ monitor to the network: captive portal, MyAmbiance app, web interface, REST API, mDNS, static IP and troubleshooting. CO2 Gadget, the firmware that turns your ESP32 into a professional CO₂ monitor.