Arduino library for the ENS16x digital four channel MOX gas sensors with I2C interface from ScioSense.

ENS16x is a range of digital multi-gas metal oxide (MOX) sensors, specifically designed for indoor air quality monitoring, offering an unrivalled wealth of fully-processed outputs including low-power operating modes.

• ENS160 Datasheet
• ENS161 Datasheet
• Further information about the ENS16x family
• Buy the ENS161 on Mouser or another distributor
• Buy the ENS161 evaluation kit on Mouser or another distributor

It is assumed that

• The Arduino IDE has been installed. If not, refer to "Install the Arduino Desktop IDE" on the Arduino site.
• The library directory is at its default location. Normally this is C:\Users\[your_username]\Documents\Arduino\libraries.

You might need to add your board to the Arduino IDE. This library was tested with the Espressif ESP32. For the installation of the ESP32 in the Arduino IDE, see Arduino ESP32 Installation

• In the Arduino IDE, navigate to the Arduino Library Manager on the left side (or, alternatively, select Sketch > Include Library > Manage Libraries...)
• Search for ScioSense_ENS16x
• Select the library from the search results and press Install

• Download the code from this repository via "Download ZIP".
• In Arduino IDE, select Sketch > Include Library > Add .ZIP library... and browse to the just downloaded ZIP file.
• When the IDE is ready this README.md should be located at C:\Users\[your_username]\Documents\Arduino\libraries\ScioSense_ENS16x\README.md.

Please make sure that you use the correct supply voltage:

• The ENS16x runs at VDD = 1.8 V. If you are using the Sciosense ENS16x breakout board, you can use VDD = 3.3 V thanks to the onboard LDO.
• The I2C communication is 3.3 V tolerant.

This example shows how to wire a ESP32DevKitC with the ENS220 breakout board for I2C communication.

To build an example sketch

• (Re)start Arduino.
• Open File > Example > Examples from Custom Libraries > ScioSense_ENS16x > 01_Basic (or any other of the provided examples you wish to run)
• Make sure Tools > Board lists the correct board.
• Select Sketch > Verify/Compile.

This library is developed for ScioSense by at² GmbH

@at2software