Compact Smart Environmental Sensor PCB

Turn any room into a smarter, healthier space. 🌱

Our miniature all-in-one sensor board continuously tracks temperature, humidity, air pressure, and CO₂ levels, giving you instant insights into your environment. With seamless integration into Home Assistant and any MQTT-based platform, it’s the easiest way to make your home truly responsive.

Unlike bulky multi-module solutions, this board is ultra-compact and designed to disappear into your setup while delivering professional-grade accuracy. And thanks to its built-in OLED display, you can check the values instantly—even without opening your phone or dashboard.

It is also ultra-customizable. Choose any 2 sensor pair from the ones we suggest or plug any I2C sensor. If you have a sensor that needs 5V for power, you have the separate 5V power pin. This gives you an unlimited choice in sensors you can use with this board. You can go with AHT20/BMP280 + CO2 or SGP41 + CO2

Whether you want to optimize heating efficiency, improve air quality, or simply enjoy peace of mind, this sensor is the perfect building block for your smart home.

🔧 Technical Highlights

• Sensor Suite

  • AHT20 + BMP280 → measures temperature, humidity, and atmospheric pressure

  • SCD40 → high-precision CO₂ monitoring 

  • SGP30/40/41 → high-precision VOC and NOx measuringfor indoor air quality monitoring 

  • total modularity → choose any 2 sensor pair from the ones we suggest or plug any I2C sensor. 

• Controller Options

  • ESP8266 → simple, proven, and cost-effective

  • ESP32-C3 Super Mini PRO → more robust Wi-Fi, external antenna support (IPEX), and long-range reliability

• Display

  • 0.96″ OLED cycles through all sensor values every 5 seconds

  • Ends with a smooth eye animation for a friendly touch

• Connectivity & Integration

  • Works out-of-the-box with ESPHome, Home Assistant, or any MQTT platform

  • Flashable with custom firmware for advanced projects

🌟 Why Choose This Board?

• Small, elegant, and all-in-one → no messy wiring, no stack of modules

• Extended Wi-Fi coverage with ESP32-C3 + external antenna

• Instant local readout on OLED plus full automation integration

• Flexible → use it standalone, in a smart-home hub, or in professional monitoring setups

• Configurable→ choose what you want to measure. Either a simple temperature, humidity, air pressure or a more advanced one with additional CO₂ or VOC and NOx or both.

This board is designed for makers, automation enthusiasts, and professionals who want reliable and accurate environmental monitoring without compromise.