Mikroelektronika d.o.o.
Thermo 26 Click Board
Thermo 26 Click Board
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Key Features:
- Low power consumption, high precision, I2C interface, temperature sensor in the STS31-DIS is the chip itself, resolution of 0.01°C, high accuracy, high reliability and long-term stability, and more
- Based on the STS31-DIS - digital temperature sensor from Sensirion
- Can be used for the thermal management of various consumer, industrial, and environmental applications
- mikroBUS: I2C Interface
The Thermo 26 Click Board™ is a compact add-on board that accurately measures temperature. This board features the STS31-DIS, a high-accuracy digital temperature sensor from Sensirion. Characterized by its high accuracy (up to ±0.2°C typical) and high resolution of 0.01°C, the STS31-DIS provides temperature data to the host controller with a configurable I2C interface. It relies on the industry-proven CMOSens® technology, providing increased intelligence, reliability, and improved accuracy specifications, including enhanced signal processing, user-selectable I2C addresses, and up to 1 MHz communication speeds. This Click board™ is suitable for the thermal management of various consumer, industrial, and environmental applications.
The Thermo 26 Click Board™ is supported by a mikroSDK-compliant library, which includes functions that simplify software development. This Click board™ comes as a thoroughly tested product, ready to be used on a system equipped with the mikroBUS™ socket.
How Does The Thermo 26 Click Board™ Work?
The Thermo 26 Click Board™ is based on the STS31-DIS, a digital temperature sensor from Sensirion with increased intelligence, reliability, NIST traceability, and improved accuracy specifications utilizing the industry-proven CMOSens® Technology. It integrates a digital temperature sensor with a 16-bit analog-to-digital converter (ADC), a data processing circuit, and serial interface logic functions in one package. The voltage is digitized and converted to a 16-bit temperature result in degrees Celsius, with a resolution of 0.01°C.
The STS31-DIS temperature sensor gives a fully calibrated, linearized, and supply-voltage-compensated digital output with outstanding accuracy of up to ±0.2°C typical over a temperature range of 0°C to 90°C.
The Thermo 26 Click Board™ communicates with MCU using the standard I2C 2-Wire interface to read data and configure settings, supporting Fast Mode Plus up to 1MHz. Besides, the STS31-DIS allows choosing the least significant bit (LSB) of its I2C slave address using the SMD jumper labelled ADDR SEL. It also possesses an additional interrupt alert signal, routed on the INT pin of the mikroBUS™ socket labelled as ALT, indicating when a specific interrupt event occurs that depends on the value of the temperature reading relative to programmable limits and general reset function routed on the RST pin of the mikroBUS™ socket.
The Thermo 26 Click Board™ can operate with both 3.3V and 5V logic voltage levels selected via the VCC SEL jumper. This way, it is allowed for both 3.3V and 5V capable MCUs to use the communication lines properly. However, the Click board™ comes equipped with a library containing easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
| Type | Temperature & humidity |
| Applications | Can be used for the thermal management of various consumer, industrial, and environmental applications |
| On-board modules | STS31-DIS - digital temperature sensor from Sensirion |
| Key Features | Low power consumption, high precision, I2C interface, temperature sensor in the STS31-DIS is the chip itself, resolution of 0.01°C, high accuracy, high reliability and long-term stability, and more |
| Interface | I2C |
| Compatibility | mikroBUS |
| Click board size | S (28.6 x 25.4 mm) |
| Input Voltage | 3.3V or 5V |
PINOUT DIAGRAM
This table shows how the pinout of the Thermo 26 Click Board™ 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 | ||
| Reset | RST | 2 | RST | INT | 15 | ALT | Alert Interrupt |
| NC | 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 | 5V | Power Supply |
| Ground | GND | 8 | GND | GND | 9 | GND | Ground |
ONBOARD SETTINGS AND INDICATORS
| Label | Name | Default | Description |
|---|---|---|---|
| LD1 | PWR | - | Power LED Indicator |
| JP1 | VCC SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
| JP2 | ADDR SEL | Left | I2C Address Selection 0/1: Left position 0, Right position 1 |
THERMO 26 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3.3 | - | 5 | V |
| Temperature Accuracy | - | ±0.2 | - | °C |
| Temperature Resolution | - | 0.01 | - | °C |
| Operating Temperature Range | -40 | +25 | +125 | °C |
Software Support
We provide a library for the Thermo 26 Click Board™ as well as a demo application (example), developed using MikroE compilers. The demo can run on all the main MikroEdevelopment boards.
The package can be downloaded/installed directly from NECTO Studio The package Manager(recommended), downloaded from our LibStock™ or found on MikroE Github account.
Library Description
This library contains API for the Thermo 26 Click Board™ driver.
Key functions
-
thermo26_read_serial_numThis function reads the 32-bit unique serial number. -
thermo26_start_measurementThis function starts the measurements by sending the specified command. -
thermo26_read_temperatureThis function reads the temperature raw data measurements and converts it to degrees Celsius.
Example Description
This example demonstrates the use of the Thermo 26 Click Board™ by reading and displaying the temperature measurements.
void application_task ( void )
{
float temperature;
if ( THERMO26_OK == thermo26_read_temperature ( &thermo26, &temperature ) )
{
log_printf ( &logger, " Temperature: %.2frnn", temperature );
}
Delay_ms ( 1000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio The package Manager(recommended), downloaded from our LibStock™ or found on MikroE Github account.
Other MikroE Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Thermo26
Additional Notes and Information
Depending on the development board you are using, you may need a USB UART Click Board™, USB UART 2 Click or RS232 Click to connect to your PC for development systems with no UART to USB interface available on the board. UART terminal is available in all MikroElektronika compilers.
MIKROSDK
The Thermo 26 Click Board™ is supported with mikroSDK – MikroElektronika’s Software Development Kit. mikroSDK should be downloaded from the LibStock™ and installed for the compiler you are using to ensure proper operation of mikroSDK compliant Click board™ demo applications.
Thermo 26 Click Board
Frequently Asked Questions
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