SGP4x gas sensor

Start testing the SGP4x gas sensor with the evaluation kit

Includes SVM41 development board (SGP41 and SHT40), UART to USB adapter cable and jumper wire set.

Product catalogue

Key facts

Product type

Gas sensor platform

Measures

VOC and NO_x

Feature

Unmatched robustness against contaminating gases

Start prototyping

Find everything you need here.

Product description

The SGP41 is Sensirion’s VOC and NO_x sensor designed as digital smart switch and regulation unit for air treatment devices such as air purifiers. The two sensor signals processed by Sensirion’s powerful Gas Index Algorithm can be directly used to automatically trigger the removal of indoor air gas pollutants by air treatment devices without the need for user–device interaction. This sensor solution is thus well-suited for constantly monitoring the VOC and NOx situation including potentially harmful events which are not perceived by humans. Furthermore, an automatic control of air treatment devices based on the SGP41 signals helps to save energy by turning them off once the VOC and/or NOx events have been taken care off.

SGP41 offers a solution for two complete sensors on a single chip facilitating design-in and saving design costs. Thanks to its very small DFN package (2.44 x 2.44 x 0.85 mm³) the sensor can be designed into applications with limited spaces.

Tutorials

Build a BLE Gadget with Arduino and SVM41

SGP40 drivers and sample code

SGP40 embedded driver	Generic driver that can be ported to new microcontrollers with little effort
SGP40 Arduino driver	C++ Arduino library to work with SGP40 gas sensor via I²C
SGP40 Raspberry Pi driver	C Raspberry library to work with SGP40 gas sensor via I²C
SGP40 Python driver	Python Driver to work with SGP40 gas sensor via I²C
Code samples Arduino	Standalone Arduino solutions demonstrating the communication with the sensor
VOC index algorithm	Provides an index output signal calculated from SGP40 raw signals
VOC index algorithm library for arduino	Arduino Library providing an index output signal calculated from SGP40 raw signals

SGP41 drivers and sample code

SGP41 embedded driver	Generic driver that can be ported to new microcontrollers with little effort
SGP41 Arduino driver	C++ Arduino library to work with SGP41 gas sensor via I²C
SGP41 Raspberry Pi driver	C Raspberry library to work with SGP41 gas sensor via I²C
SGP41 Python driver	Python Driver to work with SGP41 gas sensor via I²C
Code samples Arduino	Standalone Arduino solutions demonstrating the communication with the sensor
VOC index algorithm	Provides an index output signal calculated from SGP41 raw signals
VOC index algorithm library for arduino	Arduino Library providing an index output signal calculated from SGP41 raw signals

SVM4x drivers and sample code

SVM4x UART embedded driver	Generic driver that can be ported to new microcontrollers with little effort
SVM4x UART Arduino driver	C++ Arduino library to work with SVM4x via UART
SVM4x UART Raspberry Pi driver	C Raspberry library to work with SVM4x via UART
SVM4x UART Python driver	Python driver to work with the SVM4x evaluation kit over UART using SHDLC protocol
SVM4x I²C embedded driver	Generic driver that can be ported to new microcontrollers with little effort
SVM4x I²C Arduino driver	C++ Arduino library to work with SVM4x via I²C
SVM4x I²C Raspberry Pi driver	C Raspberry library to work with SVM4x via I²C
SVM4x I²C Python driver	Python driver to communicate with SVM4x using the I²C interface

Resources

SGP40 and SGP41 gas sensors	SEK-SVM4x evaluation kit
Datasheet SGP40	Technical description
Datasheet SGP41	I²C interface description
Datasheet SHT4x	UART interface description
SGP4x STEP file	Reference design
SGP4x altium footprint	Quick start guide ControlCenter
Handling and assemly instructions
Design-in guide
Quick testing guide SGP40
Quick testing guide SGP41

Evaluate without writing code

In just three simple steps, you will be collecting valuable data without needing any coding or soldering skills.

How it works

Either download the SEK-ControlCenter viewer software (available for Windows, Linux and MacOS) or download one of our example drivers for your embedded platform (see links above). A simple step-by-step quick start guide can be found here.
Connect the SVM41 development board to your computer/embedded platform with the help of the adapter and start measuring.

Find out what the evaluation kit holds

SVM4x development board

SGP41 VOC+NOx sensor and SHT40 humidity and temperature sensor
UART and I²C interface via 6-pin Molex Micro-Lock Plus connector
Supply voltage VDD: 3.3 or 5.0 V
Size: 39.0 x 15.0 x 5.5 mm3

USB-UART cable (6-pin) to connect the SVM4x development board directly to a USB port, e.g. on a PC

Jumper wire set (6-pin Micro-Lock Plus cable set) to connect the SVM4x development board to embedded platforms like Arduino, Raspberry Pi, etc. A 10-pin 0.1" pitch-gender changer is also provided.

Cable configuration:

Red cable = VDD
Black cable = GND
Green cable = SDA (I²C) or RX (UART)
Yellow cable = SCL (I²C) or TX (UART)
Blue cable = SEL (interface select – connect to GND for I²C, connect to VDD or leave open to select UART)
Purple cable = NC (do not connect)