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https://github.com/sensirion/arduino-i2c-sgp41

The SGP41 is Sensirion’s new digital VOC (volatile organic compounds) and NOx sensor designed for easy integration into air purifiers or demand-controlled ventilation.
https://github.com/sensirion/arduino-i2c-sgp41

arduino arduino-library driver i2c nox sensirion sensor sgp sgp4x svm4x voc

Last synced: 3 months ago
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The SGP41 is Sensirion’s new digital VOC (volatile organic compounds) and NOx sensor designed for easy integration into air purifiers or demand-controlled ventilation.

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README 

        
# Sensirion I2C SGP41 Arduino Library



This is the Sensirion SGP41 library for Arduino using the

modules I2C interface.



[](https://www.sensirion.com/en/environmental-sensors/gas-sensors/sgp41)



Click [here](https://www.sensirion.com/en/environmental-sensors/gas-sensors/sgp41) to learn more about the SGP41 sensor.



# Installation



To install, download the latest release as .zip file and add it to your

[Arduino IDE](http://www.arduino.cc/en/main/software) via



	Sketch => Include Library => Add .ZIP Library...



Don't forget to **install the dependencies** listed below the same way via `Add

.ZIP Library`



Note: Installation via the Arduino Library Manager is coming soon.



# Dependencies



* [Sensirion Core](https://github.com/Sensirion/arduino-core)



# Quick Start



1. Connect the SGP41 Sensor to your Arduino board's standard

   I2C bus. Check the pinout of your Arduino board to find the correct pins.

   The pinout of the SGP41 Sensor board can be found in the

   data sheet.



	* **VDD** of the SEK-SGP41 to the **3.3V** of your Arduino board

	* **GND** of the SEK-SGP41 to the **GND** of your Arduino board

	* **SCL** of the SEK-SGP41 to the **SCL** of your Arduino board

	* **SDA** of the SEK-SGP41 to the **SDA** of your Arduino board



2. Open the `exampleUsage` sample project within the Arduino IDE



		File => Examples => Sensirion I2C SGP41 => exampleUsage



3. Click the `Upload` button in the Arduino IDE or



		Sketch => Upload



4. When the upload process has finished, open the `Serial Monitor` or `Serial

   Plotter` via the `Tools` menu to observe the measurement values. Note that

   the `Baud Rate` in the corresponding window has to be set to `115200 baud`.



# Conditioning



After each restart of the sensor or when the hotplates have been switched off, the conditioning command must

be called from idle mode. The conditioning heats the hotplate of the NOx pixel to a different temperature compared

to the measurement mode enabling a faster switch-on thereafter.



It is recommended to execute the conditioning for 10s, but **10s must not be exceeded** to avoid damage to the sensing material.



# Contributing



**Contributions are welcome!**



We develop and test this driver using our company internal tools (version

control, continuous integration, code review etc.) and automatically

synchronize the master branch with GitHub. But this doesn't mean that we don't

respond to issues or don't accept pull requests on GitHub. In fact, you're very

welcome to open issues or create pull requests :)



This Sensirion library uses

[`clang-format`](https://releases.llvm.org/download.html) to standardize the

formatting of all our `.cpp` and `.h` files. Make sure your contributions are

formatted accordingly:



The `-i` flag will apply the format changes to the files listed.



```bash

clang-format -i src/*.cpp src/*.h

```



Note that differences from this formatting will result in a failed build until

they are fixed.



# License



See [LICENSE](LICENSE).