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MIKROE-5868
18 g
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Diff Press 4 Click is a compact add-on board that can measure differential pressure. This board features the SM9336-BCE-S-250-000, a digital pressure and altimeter sensor module from TE Connectivity. The SM9336-BCE-S-250-000 has a configurable host interface that supports I2C serial communication and measures pressure in a wide range with an accuracy of 3%. It comes as calibrated and temperature-compensated with high reliability/long-term stability. It operates in a compensated temperature range of -20°C to 85°C, ensuring stable operation under extreme conditions. This Click board™ makes the perfect solution for the development of weather station equipment, industrial, consumer applications, and similar applications that rely on accurate and reliable pressure monitoring.
Diff Press 4 Click is fully compatible with the mikroBUS™ socket and can be used on any host system supporting the mikroBUS™ standard. It comes with the mikroSDK open-source libraries, offering unparalleled flexibility for evaluation and customization. What sets this Click board™ apart is the groundbreaking ClickID feature, enabling your host system to seamlessly and automatically detect and identify this add-on board.
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Diff Press 4 Click is based on the SM9336-BCE-S-250-000, a digital pressure and altimeter sensor module from TE Connectivity. It uses state-of-the-art MEMS pressure transducer technology and CMOS mixed signal processing technology to produce digital, fully conditioned, multi-order pressure and temperature-compensated measurements. The sensor comes in the JEDEC standard SOIC-16 package with dual vertical porting that can accept ∅2.2 hoses, where one of them is a high-pressure side, while the other is designated as the vacuum side. It can measure differential pressure from -250Pa up to 250Pa with a total error band after Autozero under 1%.
Diff Press 4 Click can use a standard 2-wire I2C interface to communicate with the host MCU, where you can read both the pressure and the temperature measurements. As the SM9336-BCE-S-250-000 sensor works on 3.3V, this Click board™ comes equipped with the PCA9306, a dual bidirectional I2C bus and SMBus voltage-level translator from Texas Instruments, which allows the use of this Click board™ with systems with 5V logic level.
This Click board™ can operate with either 3.3V or 5V logic voltage levels selected via the VIO SEL jumper. This way, both 3.3V and 5V capable MCUs can use the communication lines properly. Also, this 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.
Type
Pressure
Applications
Can be used for the development of weather station equipment, industrial, consumer applications, and similar applications that rely on accurate and reliable pressure monitoring
On-board modules
SM9336-BCE-S-250-000 - digital pressure and altimeter sensor module from TE Connectivity
Key Features
Wide differential pressure range, low total error band after Autozero, 16-bit I2C digital interface, pressure calibrated and temperature compensated output, MEMS pressure transducer technology, and more
Interface
I2C
Feature
ClickID
Compatibility
mikroBUS™
Click board size
M (42.9 x 25.4 mm)
Input Voltage
3.3V or 5V
This table shows how the pinout on Diff Press 4 Click corresponds to the pinout on the mikroBUS™ socket (the latter shown in the two middle columns).
Label | Name | Default | Description |
---|---|---|---|
LD1 | PWR | - | Power LED Indicator |
JP1 | VIO SEL | Left | Logic Level Voltage Selection 3V3/5V: Left position 3V3, Right position 5V |
Description | Min | Typ | Max | Unit |
---|---|---|---|---|
Supply Voltage | 3.3 | - | 5 | V |
Pressure Management Range | -250 | - | +250 | Pa |
Resolution | - | 16 | - | bit |
We provide a library for the Diff Press 4 Click as well as a demo application (example), developed using MIKROE compilers. The demo can run on all the main MIKROE development boards.
Package can be downloaded/installed directly from NECTO Studio Package Manager (recommended), downloaded from our LibStock™ or found on Mikroe github account.
Library Description
This library contains API for Diff Press 4 Click driver.
Key functions
diffpress4_get_measurement_data
Diff Press 4 gets the raw data function.
diffpress4_get_status
Diff Press 4 get status function.
diffpress4_get_raw_data
Diff Press 4 gets the raw data function.
Example Description
This example demonstrates the use of Diff Press 4 Click board™ by reading and displaying the differential pressure and sensor temperature measurements.
void application_task ( void )
{
static float diff_press = 0, temperature = 0;
diffpress4_status_t status;
diffpress4_get_status( &diffpress4, &status );
if ( ( DIFFPRESS4_OK == diffpress4_get_measurement_data( &diffpress4, &diff_press, &temperature ) ) &&
( DIFFPRESS4_STATUS_DSP_S_UPDATED == status.dsp_s_up ) &&
( DIFFPRESS4_STATUS_DSP_T_UPDATED == status.dsp_t_up ) )
{
log_printf( &logger, " Diff Pressure : %.2f [Pa] rn", diff_press );
log_printf( &logger, " Temperature : %.2f [degC] rn", 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), downloaded from our LibStock™ or found on Mikroe github account.
Other Mikroe Libraries used in the example:
Additional notes and informations
Depending on the development board you are using, you may need 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 MIKROE compilers.
This Click board™ is supported with mikroSDK - MIKROE 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.
For more information about mikroSDK, visit the official page.
NOTE: Please be advised that any peripheral devices or accessories shown connected to the Click board™ are not included in the package. Check their availability in our shop or in the YMAN section below.