# OpenSENSE

![OpenSENSE](https://docs.sasakaranovic.com/opensense/opensense_img.png)

## 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 OpenSENSE

OpenSENSE is available for purchase on [web shop](https://shop.sasakaranovic.com/products/opensense)

## Source Code

OpenSENSE is open-source, open-hardware project.\
You can find source files at the project's [GitHub repository](https://github.com/SasaKaranovic/OpenSENSE).