Intermediate
30 min

Create secure and environmentally conscious spaces with EKMC1607112 and PIC32MZ2048EFH100

Invisible guardians: Your pyroelectric motion sensor!

Motion 2 Click with Flip&Click PIC32MZ

Published Oct 07, 2023

Click board™

Motion 2 Click

Dev. board

Flip&Click PIC32MZ

Compiler

NECTO Studio

MCU

PIC32MZ2048EFH100

Our PIR motion sensor technology is designed to enhance security and energy efficiency by providing reliable, real-time detection of human presence, revolutionizing the way spaces are monitored and managed

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Hardware Overview

How does it work?

Motion 2 Click is based on EKMC1607112, a PIR motion sensor from Panasonic used as a human motion detector. This PIR sensor can detect changes in the amount of infrared radiation impinging upon it, which varies depending on the temperature and surface characteristics of the objects in front of the sensor. Detection performance of EKMC1607112 at ambient temperature of 25°C with temperature difference of 8°C is up to 7m and for temperature difference of 4°C it's up to 5m. Output from PIR sensor is feed into buffer and then photorelay alowing users to directly control with galvanic isolation from sensor and MCU electronic devices such as lights, motors, gates, and more. The TLP241A photorelay is able to effectively replace traditionally used mechanical

relays, bringing up the full set of inherited benefits: virtually unlimited number of cycles since there are no moving parts that would wear off, no bouncing effect on the output contacts, high resistance to mechanical shock and environmental influence, low current required for the activation, constant resistance since no carbon and rust can build up on contacts, there is no sparking or electric arc forming while operated, compact size, higher isolation voltage, and so on. When an object, such as a person, passes in front of the background, such as a wall, the temperature at that point in the sensor's field of view will rise from room temperature to body temperature, and then back again. The sensor converts the resulting change in the incoming infrared radiation into

a change in the output voltage, and this triggers the detection. Objects of similar temperature but different surface characteristics may also have a different infrared emission pattern, and thus moving them with respect to the background may trigger the detector as well. In some cases, going back and forth towards the sensor (parallel movement to the axis Z), may not be detected. Difficulty in sensing the heat source is that glass, acrylic or similar materials standing between the target and the sensor may not allow a correct transmission of infrared rays and also non-movement or quick movements of the heat source inside the detection area.

Motion 2 Click top side image
Motion 2 Click bottom side image

Features overview

Development board

Flip&Click PIC32MZ is a compact development board designed as a complete solution that brings the flexibility of add-on Click boards™ to your favorite microcontroller, making it a perfect starter kit for implementing your ideas. It comes with an onboard 32-bit PIC32MZ microcontroller, the PIC32MZ2048EFH100 from Microchip, four mikroBUS™ sockets for Click board™ connectivity, two USB connectors, LED indicators, buttons, debugger/programmer connectors, and two headers compatible with Arduino-UNO pinout. Thanks to innovative manufacturing technology,

it allows you to build gadgets with unique functionalities and features quickly. Each part of the Flip&Click PIC32MZ development kit contains the components necessary for the most efficient operation of the same board. In addition, there is the possibility of choosing the Flip&Click PIC32MZ programming method, using the chipKIT bootloader (Arduino-style development environment) or our USB HID bootloader using mikroC, mikroBasic, and mikroPascal for PIC32. This kit includes a clean and regulated power supply block through the USB Type-C (USB-C) connector. All communication

methods that mikroBUS™ itself supports are on this board, including the well-established mikroBUS™ socket, user-configurable buttons, and LED indicators. Flip&Click PIC32MZ development kit allows you to create a new application in minutes. Natively supported by Mikroe software tools, it covers many aspects of prototyping thanks to a considerable number of different Click boards™ (over a thousand boards), the number of which is growing every day.

Flip&Click PIC32MZ double image

Microcontroller Overview

MCU Card / MCU

default

Architecture

PIC32

MCU Memory (KB)

2048

Silicon Vendor

Microchip

Pin count

100

RAM (Bytes)

524288

Used MCU Pins

mikroBUS™ mapper

NC
NC
AN
NC
NC
RST
Enable
RA0
CS
NC
NC
SCK
NC
NC
MISO
NC
NC
MOSI
Power Supply
3.3V
3.3V
Ground
GND
GND
NC
NC
PWM
Interrupt
RD9
INT
NC
NC
TX
NC
NC
RX
NC
NC
SCL
NC
NC
SDA
Power Supply
5V
5V
Ground
GND
GND
1

Take a closer look

Click board™ Schematic

Motion 2 Click Schematic schematic

Step by step

Project assembly

Flip&Click PIC32MZ front image hardware assembly

Start by selecting your development board and Click board™. Begin with the Flip&Click PIC32MZ as your development board.

Flip&Click PIC32MZ front image hardware assembly
GNSS2 Click front image hardware assembly
Prog-cut hardware assembly
GNSS2 Click complete accessories setup image hardware assembly
Flip&Click PIC32MZ MB1 Access - upright/background hardware assembly
Necto image step 2 hardware assembly
Necto image step 3 hardware assembly
Necto image step 4 hardware assembly
Necto image step 5 hardware assembly
Necto image step 6 hardware assembly
Flip&Click PIC32MZ MCU step hardware assembly
Necto No Display image step 8 hardware assembly
Necto image step 9 hardware assembly
Necto image step 10 hardware assembly
Debug Image Necto Step hardware assembly

Track your results in real time

Application Output

1. Application Output - In Debug mode, the 'Application Output' window enables real-time data monitoring, offering direct insight into execution results. Ensure proper data display by configuring the environment correctly using the provided tutorial.

2. UART Terminal - Use the UART Terminal to monitor data transmission via a USB to UART converter, allowing direct communication between the Click board™ and your development system. Configure the baud rate and other serial settings according to your project's requirements to ensure proper functionality. For step-by-step setup instructions, refer to the provided tutorial.

3. Plot Output - The Plot feature offers a powerful way to visualize real-time sensor data, enabling trend analysis, debugging, and comparison of multiple data points. To set it up correctly, follow the provided tutorial, which includes a step-by-step example of using the Plot feature to display Click board™ readings. To use the Plot feature in your code, use the function: plot(*insert_graph_name*, variable_name);. This is a general format, and it is up to the user to replace 'insert_graph_name' with the actual graph name and 'variable_name' with the parameter to be displayed.

Software Support

Library Description

This library contains API for Motion 2 Click driver.

Key functions:

  • motion2_enable - Enable motion sensor function

  • motion2_detect_state - Get detection state function

Open Source

Code example

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.

/*!
 * @file main.c
 * @brief Motion 2 Click Example.
 *
 * # Description
 * This example demonstrates the use of Motion 2 click boards.
 * 
 * The demo application is composed of two sections :
 *
 * ## Application Init
 * Initializes the driver and enables the motion sensor.
 *
 * ## Application Task
 * It checks if the sensor has detected movement and therefore displays 
 * the desired message on the USB UART.
 *
 * @author Jelena Milosavljevic
 *
 */
// ------------------------------------------------------------------- INCLUDES

#include "board.h"
#include "log.h"
#include "motion2.h"

// ------------------------------------------------------------------ VARIABLES

static motion2_t motion2;   /**< Motion 2 Click driver object. */
static log_t logger;    /**< Logger object. */


motion2_detect_state_t motion_state;
motion2_detect_state_t motion_old_state;
// ------------------------------------------------------ APPLICATION FUNCTIONS

void application_init ( void ) {
   
    log_cfg_t log_cfg;  /**< Logger config object. */
    motion2_cfg_t motion2_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.

    motion2_cfg_setup( &motion2_cfg );
    MOTION2_MAP_MIKROBUS( motion2_cfg, MIKROBUS_1 );
    if ( motion2_init( &motion2, &motion2_cfg ) == DIGITAL_OUT_UNSUPPORTED_PIN ) {
       
        log_error( &logger, " Application Init Error. " );
        log_info( &logger, " Please, run program again... " );

        for ( ; ; );
    }
    
    motion2_enable( &motion2, MOTION2_MODULE_ENABLE );
    Delay_ms( 100 );
    log_printf( &logger, "The sensor is ready.\r\n" );
    log_printf( &logger, "-----------------------\r\n" );
}

void application_task ( void ) {  
    uint8_t int_status;

    int_status = motion2_detect_state( &motion2 );

    if ( int_status == MOTION2_DETECT_OBJECT ) {
        log_printf( &logger, "Motion detected!\r\n" );
        log_printf( &logger, "-----------------------\r\n" );
        while ( int_status == MOTION2_DETECT_OBJECT ) {
            int_status = motion2_detect_state( &motion2 );
        }
        log_printf( &logger, "The sensor is ready.\r\n" );
        log_printf( &logger, "-----------------------\r\n" );
        Delay_ms( 100 );
    }
}

void main ( void ) {
    application_init( );

    for ( ; ; ) {
        application_task( );
    }
}

// ------------------------------------------------------------------------ END

Additional Support

Resources

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