Skip to content

OpenSENSE

OpenSENSE

What is this project about?

OpenSENSE is a DIY wireless ambient sensor for smart home and home automation applications.

Easily measure room temperature, humidity, pressure, ambient light and UV index.
The sensor is USB-C powered, `really tiny` and light-weight so you can easily mount it almost anywhere.

Sensor Measurements

  • Ambient Temperature
  • Relative Humidity
  • Barometric pressure
  • Ambient Light
  • UV Index

Features

  • Small form-factor (measures 40x20mm / 1.58"x0.79")
  • USB-C connector for power
  • Wireless sensor (WiFi)
  • Low-power consumption
  • Re-configurable over USB
  • Works with HomeAssistant
  • Works with ESPHome
  • Open-Source and Open-Hardware
  • DIY friendly

Hardware

ESP32-C3 microcontroller - Wi-Fi and Bluetooth 5 (LE) SoC

  • BME280 temperature, humidity and pressure sensor
    -- Temperature: -40 to +80C temperature range
    -- Humidity: ±3% accuracy (20-100% RH)
    -- Pressure: RMS noise 0.2Pa, Sensitivity error ±0.25%
  • LTR-390UV ambient light and UV sensor
    -- Wide dynamic range 1:18.000.000
    -- Close to human eye spectral response

Out of the box the sensor is pre-configured to work with HomeAssistant using ESPHome integration. This should allow anyone to get up-an-running in just a couple of simple steps.

Buy OpenFAN

OpenSENSE is available for purchase on web shop

Source Code

OpenSENSE is open-source, open-hardware project.
You can find source files at the project's GitHub repository.