Environment 6 Click

How does it work?

Environment 6 Click is based on the BME690, the world’s smallest 4-in-1 environmental sensor with integrated AI from Bosch Sensortec. This board combines gas, humidity, pressure, and temperature measurement and provides a highly integrated environmental sensing solution designed for precise monitoring of air quality and ambient conditions. The BME690 is capable of detecting volatile organic compounds, volatile sulfur compounds, carbon monoxide, hydrogen, and other gases, and it includes a gas scanner function that offers extended measurements to evaluate overall indoor or outdoor air quality. By using Bosch’s software, gas readings can be analyzed further, and AI-driven algorithms can be trained to detect specific environmental indicators such as the likelihood of bacteria growth or the presence of organic contaminants, delivering reliable and adaptable data for a wide range of use cases.

The BME690 provides key outputs such as Index for Air Quality, bVOC- and CO2-equivalent values, ensuring actionable insights into environmental health. It supports a full operating range with pressure accuracy of ±0.05hPa, humidity accuracy of ±3%RH, and temperature accuracy of ±0.5°C within 0 to 65°C range, making it suitable for demanding applications including wearables, mobile devices, smart home solutions, and care-related products.

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/IC/module area to become movable by breaking the PCB, opening up many new possibilities for implementation. Thanks to the Snap feature, the BME690 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 board supports communication with the host MCU through either SPI (maximum clock frequency of 10MHz) or I2C (maximum clock frequency of 3.4MHz) interfaces, with I2C being the default option. The communication interface is selected by adjusting the COMM SEL jumper to the desired position. To enhance flexibility, particularly with the detachable Snap section of the Click Snap format, an additional COMM SEL jumpers are available. These jumpers functions the same as the COMM SEL, allowing for independent communication interface selection when the Snap section is used independently. To ensure proper functionality, all COMM jumpers must be set to the same interface. For those using the I2C interface, the board also provides an ADDR SEL jumper, enabling users to configure the I2C address as needed for their specific application.

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 6 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
ID SEL	RST	2	RST	INT	15	NC
SPI Select / ID COMM	CS	3	CS	RX	14	NC
SPI Clock	SCK	4	SCK	TX	13	NC
SPI Data OUT	SDO	5	MISO	SCL	12	SCL	I2C Clock
SPI Data IN	SDI	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 6 Click electrical specifications

Software Support

Environment 6 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 6 Click board, which integrates a high-precision environmental sensor for measuring temperature, humidity, pressure, and gas resistance. The application initializes the device and periodically reads and logs all available environmental parameters via UART.

Key Functions

• environment6_cfg_setup This function initializes Click configuration structure to initial values.
• environment6_init This function initializes all necessary pins and peripherals used for this Click board.
• environment6_default_cfg This function executes a default configuration of Environment 6 Click board.
• environment6_set_sensor_conf This function configures the sensor oversampling, filter, and data rate.
• environment6_set_gas_conf This function sets the heater temperature, duration, and enables gas measurements.
• environment6_get_data This function triggers a measurement and reads temperature, pressure, humidity, and gas resistance data.

Application Init

Initializes the logger and configures the Environment 6 Click. It sets up communication and applies the default configuration to the sensor.

Application Task

Continuously reads temperature (degC), humidity (%RH), pressure (mBar), and gas resistance (Ohms) if enabled, then logs the measured values every second.

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.