SW420 vibration sensor LOPY4

  • Hy,

    I am trying to make a vibration sensor (SW420) work with the LOPY4 board.

    Here is the code currently used in the main file:

    import socket
    import machine
    from machine import Pin
    import pycom
    import time
    def pin_handler(channel):
        print("Detection d'une vibration " ,channel())
    pir = Pin("P2", mode=Pin.IN, pull=Pin.PULL_UP)
        pir.callback(Pin.IRQ_RISING, pin_handler)
        while 1:
            # create a LoRa socket
            s = socket.socket(socket.AF_LORA, socket.SOCK_RAW)
            # set the LoRaWAN data rate
            s.setsockopt(socket.SOL_LORA, socket.SO_DR, 5)
            # set the LoRaWAN port number for transmitted packets
            #s.send(struct.pack('d', pir()))
    except KeyboardInterrupt:
        print(" STOP")

    I would like to analyze the vibration of an equipment to define on-off moments. Ideally, I would like to retrieve the first change in value (from 0 to 1) tell the number of 1 (vibration) in a period (for example 5 seconds) if the number of 1 is greater than 5 for example, I go back to a state (ON or 1).

    And the same thing in the other direction, if there is no more operating state for 5 seconds, go back to an end state (OFF or 0).
    Do you have any ideas ?

    Thanks for your help.

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