Mikroelektronika d.o.o.
SKU: MIKROE-4868Barometer 4 Click Board
Barometer 4 Click Board
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The Barometer 4 Click Board™ is a compact add-on board used to measure air pressure in a specific environment. This board features the ICP-10111, a high accuracy low power barometric and temperature sensor from TDK InvenSense. The ICP-10111 is based on MEMS capacitive technology providing ultra-low noise at the lowest power, enabling industry-leading relative accuracy, sensor throughput, and temperature stability. It comes with a configurable host interface that supports I2C serial communication and measures pressure in a range from 30kPa up to 110kPa with an accuracy of ±1Pa over a wide operating temperature range.
The Barometer 4 Click Board™ is suited for various pressure-based applications, especially when low power consumption is required, home appliances such as airflow control in HVAC, water level detection, vertical velocity monitoring, weather forecasting, and many more.
How Does The Barometer 4 Click Board™ Work?
The Barometer 4 Click Board™ as its foundation uses the ICP-10111, an ultra-low power, low noise, digital output barometric pressure, and temperature sensor from TDK InvenSense. It is based on an innovative MEMS capacitive pressure sensor technology that can measure pressure in a range from 30kPa up to 110kPa with an accuracy of ±1Pa over a wide operating temperature range at the industry's lowest power. This high accuracy MEMS capacitive pressure sensor can also measure altitude differentials down to 8.5cm without the penalty of increased power consumption or reduced sensor throughput.
The ICP-10111 also offers industry-leading temperature stability of the pressure sensor with a temperature coefficient offset of ±0.5Pa/°C. The high accuracy, temperature stability, and low power consumption offered by ICP-10111 make it ideally suited for applications such as drone flight control and stabilization, indoor/outdoor navigation, sports and fitness activity monitoring, and battery-powered IoT.
The ICP-10111 also requires a supply voltage of 1.8V to work regularly. Therefore, a small LDO regulator, BH18PB1WHFV from Rohm Semiconductor, provides 1.8V out of mikroBUS™ power rails. This LDO cut power consumption by lowering its current consumption to approximately 2μA when the application is operating in the Standby state.
The Barometer 4 Click Board™ communicates with MCU using a standard I2C 2-Wire interface that supports 400kHz Fast Mode operation. Since the sensor for operation requires a 1.8V logic voltage level only, this Click board™ also features the PCA9306 voltage-level translator from Texas Instruments. The I2C interface bus lines are routed to the dual bidirectional voltage-level translator, allowing this Click board™ to work with both 3.3V and 5V MCUs properly.
This 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 I2C communication lines properly. However, the Barometer 4 Click Board™ comes equipped with a library that contains easy-to-use functions and an example code that can be used, as a reference, for further development.
SPECIFICATIONS
| Type | Pressure |
| Applications | Can be used for various pressure-based applications, especially when low power consumption is required, home appliances such as airflow control in HVAC, water level detection, vertical velocity monitoring, weather forecasting, and many more |
| On-board modules | ICP-10111 - an ultra-low power, low noise, digital output barometric pressure, and temperature sensor from TDK InvenSense |
| Key Features | Low power consumption, high precision, embedded temperature sensor, ultra-low noise, temperature stability, accuracy of ±1Pa over a wide operating temperature range, also measure altitude differentials down to 8.5cm, 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 on the Barometer 4 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 | ||
| NC | 2 | RST | INT | 15 | NC | ||
| 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 |
BAROMETER 4 CLICK ELECTRICAL SPECIFICATIONS
| Description | Min | Typ | Max | Unit |
|---|---|---|---|---|
| Supply Voltage | 3.3 | - | 5 | V |
| Operating Pressure Range | 30 | - | 110 | kPa |
| Accuracy | - | ±1 | - | Pa |
| Resolution | - | 0.01 | - | Pa |
| Operating Temperature Range | -40 | +25 | +85 | °C |
Software Support
We provide a library for the Barometer 4 Click Board™ as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.
The package can be downloaded/installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe Github account.
Library Description
This library contains API for the Barometer 4 Click Board™ driver.
Key functions
-
barometer4_get_pressure_and_temperatureBarometer 4 get pressure and temperature function. -
barometer4_get_raw_dataBarometer 4 get RAW data function. -
barometer4_soft_resetBarometer 4 software reset function.
Example Description
This library contains API for the Barometer 4 Click Board™ driver. The library initializes and defines the I2C bus drivers to write and read data from registers. This demo application shows an example of atmospheric pressure and temperature measurement.
void application_task ( void )
{
static float pressure;
static float temperature;
barometer4_get_pressure_and_temperature( &barometer4, &pressure, &temperature );
log_printf( &logger, " Pressure : %.2f Parn", pressure );
log_printf( &logger, " Temperature : %.2f Crn", temperature );
log_printf( &logger, "----------------------------rn" );
Delay_ms( 1000 );
}
The full application code, and ready to use projects can be installed directly from NECTO Studio Package Manager(recommended way), downloaded from our LibStock™ or found on Mikroe github account.
Other Mikroe Libraries used in the example:
- MikroSDK.Board
- MikroSDK.Log
- Click.Barometer4
Additional Notes and Information
Depending on the development board you are using, you may need a USB UART click, 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 Barometer 4 Click Board™ is supported with mikroSDK - MikroElektronika Software Development Kit. To ensure proper operation of mikroSDK compliant Click board™ demo applications, mikroSDK should be downloaded from the LibStock and installed for the compiler you are using.
Barometer 4 Click Board
Frequently Asked Questions
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