Water Detect 2 Click

Water Detect 2 Click is a compact add-on board that can detect the presence/flow of a liquid in a clear tube. This board features the OPB350L250, a tube liquid sensor from TT Electronics. Water Detect 2 Click has multiple output states and can recognize fluid present, no fluid present, and no tube present. This sensor excepts 1/4” tubing (6.3mm) as an outside diameter of the clear tubes, regardless of the direction of the liquid’s flow.

Click Product page

Click library

• Author : Nenad Filipovic
• Date : Jul 2023.
• Type : GPIO type

Software Support

We provide a library for the Water Detect 2 Click as well as a demo application (example), developed using MikroElektronika compilers. The demo can run on all the main MikroElektronika development boards.

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 Water Detect 2 Click driver.

Standard key functions :

• waterdetect2_cfg_setup Config Object Initialization function.

  void waterdetect2_cfg_setup ( waterdetect2_cfg_t *cfg );

• waterdetect2_init Initialization function.

  err_t waterdetect2_init ( waterdetect2_t *ctx, waterdetect2_cfg_t *cfg );

• waterdetect2_default_cfg Click Default Configuration function.

  void waterdetect2_default_cfg ( waterdetect2_t *ctx );

Example key functions :

• waterdetect2_get_fluid_status Water Detect 2 get fluid status function.

  uint8_t waterdetect2_get_fluid_status ( waterdetect2_t *ctx );

• waterdetect2_enable Water Detect 2 enable function.

  void waterdetect2_enable ( waterdetect2_t *ctx );

• waterdetect2_disable Water Detect 2 disable function.

  void waterdetect2_disable ( waterdetect2_t *ctx );

Example Description

This library contains API for Water Detect 2 Click driver. Water Detect 2 Click is used for detecting water and other electroconductive liquids.

The demo application is composed of two sections :

Application Init

Initializes driver and performs the default configuration.

void application_init ( void ) 
{
    log_cfg_t log_cfg;  /**< Logger config object. */
    waterdetect2_cfg_t waterdetect2_cfg;  /**< Click config object. */

    /** 
     * Logger initialization.
     * Default baud rate: 115200
     * Default log level: LOG_LEVEL_DEBUG
     * @note If USB_UART_RX and USB_UART_TX 
     * are defined as HAL_PIN_NC, you will 
     * need to define them manually for log to work. 
     * See @b LOG_MAP_USB_UART macro definition for detailed explanation.
     */
    LOG_MAP_USB_UART( log_cfg );
    log_init( &logger, &log_cfg );
    log_info( &logger, " Application Init " );

    // Click initialization.
    waterdetect2_cfg_setup( &waterdetect2_cfg );
    WATERDETECT2_MAP_MIKROBUS( waterdetect2_cfg, MIKROBUS_1 );
    if ( DIGITAL_OUT_UNSUPPORTED_PIN == waterdetect2_init( &waterdetect2, &waterdetect2_cfg ) ) 
    {
        log_error( &logger, " Communication init." );
        for ( ; ; );
    }

    waterdetect2_default_cfg( &waterdetect2 );
    log_info( &logger, " Application Task " );
}

Application Task

Reads fluid presence status and determines if there is fluid presence or not.

void application_task ( void ) 
{
    uint8_t fluid_status = waterdetect2_get_fluid_status( &waterdetect2 );
    if ( fluid_status != fluid_status_old )
    {
        if ( WATERDETECT2_FLUID_DETECTED == fluid_status )
        {
            log_printf( &logger, " Fluid present! \r\n" );
        }
        else
        {
            log_printf( &logger, " No fluid present. \r\n" );
        }
        log_printf( &logger, "------------------- \r\n" );
        fluid_status_old = fluid_status;
    }
}

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.WaterDetect2

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 MikroElektronika compilers.