If you're in the market for an environmental sensor to accurately measure temperature, humidity, barometric pressure, and VOCs, then you should consider the STEVAL-MKI024V1 from STMicroelectronics. This compact sensor board combines four different sensors in one package and is compatible with microcontrollers such as the STM32 Nucleo, making it a versatile addition to any project.

In this blog post, we'll dive into the STEVAL-MKI024V1's various capabilities and how it can be used in different environments. We'll also explore the sensor's technical specifications and provide tips on how to get started with this powerful tool.

The Technical Specs

First, let's take a look at the technical features of the STEVAL-MKI024V1. The sensor board includes the following:

HTS221 temperature and humidity sensor

LPS22HB barometric pressure sensor

STSPCC2530 gas sensor for VOCs

STM32F401RE microcontroller

The HTS221 sensor has a temperature range from -40°C to 120°C and a humidity range from 0% to 100%. It's capable of measuring temperature with an accuracy of ±0.5°C and humidity with an accuracy of ±3.5%.

The LPS22HB sensor can measure barometric pressure from 260 to 1260 hPa with an accuracy of ±0.5 hPa.

The STSPCC2530 gas sensor can detect a range of VOCs, including formaldehyde, toluene, and benzene. It also has a metal oxide sensor for detecting carbon monoxide and is designed to operate in a temperature range from -40°C to 85°C.

Finally, the STM32F401RE microcontroller on board allows for easy communication with other microcontroller boards such as the STM32 Nucleo.

Possible Use Cases

The STEVAL-MKI024V1 has a wide range of potential use cases, thanks to its various sensors and compact size. Here are a few examples:

Indoor Air Quality Monitoring

With the STSPCC2530 gas sensor, the STEVAL-MKI024V1 can detect harmful VOCs such as formaldehyde, which is commonly found in furniture and building materials. By measuring the levels of VOCs in a room and alerting users when air pollution exceeds safe levels, the STEVAL-MKI024V1 can help promote a healthier indoor environment.

Weather Monitoring

The STEVAL-MKI024V1's barometric pressure sensor allows for accurate weather measurements, such as tracking changes in air pressure to predict the onset of storms. Additionally, its temperature and humidity sensors can provide insight into the microclimates of specific areas.

Agriculture

The STEVAL-MKI024V1 can be used to monitor environmental conditions for indoor agriculture. By placing sensors in a greenhouse or other controlled environment, users can measure temperature, humidity, and barometric pressure to help optimize plant growth.

Getting Started with STEVAL-MKI024V1

To get started with the STEVAL-MKI024V1, you'll need to connect the board to your microcontroller of choice. Users can download the STEVAL-MKI024V1 software package from the STMicroelectronics website to begin exploring the sensor's capabilities.

After connecting the sensor board, users can begin reading sensor data via serial communication. The STM32 Nucleo board is particularly well-suited for this task, as it has the processing power to easily handle the sensor data.

Overall, the STEVAL-MKI024V1 is a powerful environmental sensor that can unlock a wide range of possibilities for your projects. With its compact design and powerful capabilities, it's a must-have tool for anyone looking to accurately measure environmental conditions.