Environment 7 Click

How does it work?

Environment 7 Click is a compact environmental monitoring solution that integrates two highly reliable sensors from Sensirion: the STCC4 CO₂ sensor and the SHT40 temperature and humidity sensor. Unlike standalone sensor boards, this Click board combines CO₂, temperature, and humidity measurements into a unified platform, enabling comprehensive environmental monitoring for indoor air quality applications. The STCC4 offers precise CO₂ concentration readings in the range of 400 to 5000 ppm with an accuracy of ±100ppm+10%, using advanced thermal conductivity sensing technology to ensure reliable performance. It is factory calibrated and optimized to deliver accurate results when paired with high-quality temperature and humidity data, making it ideal for use in air quality monitors, HVAC systems, and smart home devices.

The SHT40 complements this setup with its high-precision measurements of relative humidity (±1.8%RH) and temperature (±0.2°C), providing a full environmental profile that supports intelligent decision-making in demanding applications. It features ultra-low power consumption and robust performance in both standard and condensing environments, with a wide operating range and JEDEC qualification for durability. Together, these sensors allow Environment 7 Click to deliver synchronized environmental data through an I2C interface with selectable addresses. The result is a powerful, multi-sensor solution designed to ensure optimal indoor conditions, energy efficiency, and user comfort through precise, real-time monitoring of the most relevant air quality parameters.

This Click board™ is designed in a unique format supporting the newly introduced MIKROE feature called "Click Snap." Unlike the standardized version of Click boards, this feature allows the main sensor area to become movable by breaking the PCB, opening up many new possibilities for implementation. Thanks to the Snap feature, the STCC4 and STH40 can operate autonomously by accessing its signals directly on the pins marked 1-8. Additionally, the Snap part includes a specified and fixed screw hole position, enabling users to secure the Snap board in their desired location.

This Click board™ can be operated only with a 3.3V logic voltage level. The board must perform appropriate logic voltage level conversion before using MCUs with different logic levels. It also comes equipped with a library containing functions and example code that can be used as a reference for further development.

Click Snap

Click Snap is an innovative feature of our standardized Click add-on boards, designed to bring greater flexibility and optimize your prototypes. By simply snapping the PCB along predefined lines, you can easily detach the main sensor/IC/module area, reducing the overall size, weight, and power consumption - ideal for the final phase of prototyping. For more details about Click Snap, visit the official page dedicated to this feature.

Specifications

Pinout diagram

This table shows how the pinout on Environment 7 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).

Notes	Pin					Pin	Notes
	NC	1	AN	PWM	16	NC
	NC	2	RST	INT	15	NC
ID COMM	CS	3	CS	RX	14	NC
	NC	4	SCK	TX	13	NC
	NC	5	MISO	SCL	12	SCL	I2C Clock
	NC	6	MOSI	SDA	11	SDA	I2C Data
Power Supply	3.3V	7	3.3V	5V	10	NC
Ground	GND	8	GND	GND	9	GND	Ground

Onboard settings and indicators

Environment 7 Click electrical specifications

Software Support

Environment 7 Click demo application is developed using the NECTO Studio, ensuring compatibility with mikroSDK's open-source libraries and tools. Designed for plug-and-play implementation and testing, the demo is fully compatible with all development, starter, and mikromedia boards featuring a mikroBUS™ socket.

Example Description

This example demonstrates the use of the Environment 7 Click board, which provides temperature, humidity, and CO2 concentration measurements. The example initializes the device, reads sensor IDs, and continuously logs environmental data.

Key Functions

• environment7_cfg_setup This function initializes Click configuration structure to initial values.
• environment7_init This function initializes all necessary pins and peripherals used for this Click board.
• environment7_read_id This function reads the product and serial numbers of the STCC4 device.
• environment7_set_meas_mode This function sets the measurement mode on the STCC4 device.
• environment7_read_meas This function reads gas concentration, temperature, and relative humidity data from the STCC4 device.

Application Init

Initializes the logger, retrieves and logs the product and serial numbers, and starts the measurement in continuous mode with 1Hz sampling rate.

Application Task

Continuously reads and logs temperature (degC) and humidity (%RH), and CO2 concentration (ppm) from sensors.

Application Output

This Click board can be interfaced and monitored in two ways:

• Application Output - Use the "Application Output" window in Debug mode for real-time data monitoring. Set it up properly by following this tutorial.
• UART Terminal - Monitor data via the UART Terminal using a USB to UART converter. For detailed instructions, check out this tutorial.

Additional Notes and Information

The complete application code and a ready-to-use project are available through the NECTO Studio Package Manager for direct installation in the NECTO Studio. The application code can also be found on the MIKROE GitHub account.