KY-002 Vibration switch

int vib = 10; // Declaration of the sensor input pin
int value; // Temporary variable
  
void setup ()
{
  pinMode(vib, INPUT); // Initialization sensor pin
  digitalWrite(vib, HIGH); // Activation of internal pull-up resistor
  Serial.begin(9600); // Initialization of the serial monitor
  Serial.print("KY-002 Vibration detection");
}
  
void loop ()
{
  // The current signal at the sensor is read out.
  value = digitalRead(vib); 
  // If a signal could be detected, this is displayed on the serial monitor.
  if (value == LOW) {
    Serial.println("Signal detected");
    delay(100); // 100 ms break
    }
}

from gpiozero import Button
import time

# The input pin to which the sensor is connected is declared here.
# The button object uses the internal pull-up resistor of the Pi.
sensor = Button(24, pull_up=True)

print("Sensor test [press CTRL+C to end the test]")

# This output function is executed when a signal is detected
def ausgabeFunktion():
    print("Signal recognized")

# When a signal is detected (falling signal edge), the output function is triggered
sensor.when_pressed = ausgabeFunktion

# Main program loop
try:
    while True:
        time.sleep(1)

# Clean-up work after the program has been completed
except KeyboardInterrupt:
    print("Program terminated")

	
		pins.setPull(DigitalPin.P1, PinPullMode.PullDown)
		basic.forever(function () {
		    serial.writeLine("" + (pins.digitalReadPin(DigitalPin.P1)))
		    if (pins.digitalReadPin(DigitalPin.P1) == 1) {
		        serial.writeLine("Shock detected")
		    } else {
		        serial.writeLine("No shock detected")
		    }
		    serial.writeLine("_____________________________________")
		    basic.pause(1000)
		})
	

The KY-002 shock and vibration sensor is a precise module for detecting shocks and vibrations. It consists of a conductive outer casing and an internal spring. In the event of shocks, the spring closes the contact to the outer casing and thus generates an electrical signal. This simple design enables reliable and fast detection of vibrations.

Technically speaking, the KY-002 operates in the voltage range from 3.3 V to 5 V. The compact design facilitates integration into a wide variety of projects. Thanks to its robustness and ease of use, the KY-002 is ideal for applications in security systems where vibrations on doors and windows need to be detected, as well as in industrial automation for monitoring machines and systems for unusual vibrations. The sensor can also be used to measure vibrations and shocks in the sports and fitness sector.

Technical Data
Operating voltage	3,3 V - 5 V
Dimensions	18,5 mm x 15 mm

Pin assignment

Raspberry Pi Pico	Sensor
GPIO26	Signal
3.3V	+V
GND	GND

Code-Example

This is an example program that counts up and outputs text serially when a signal is detected at the sensor.

To load the following code example onto your Pico, we recommend using the Thonny IDE. All you have to do first is go to Run > Configure interpreter ... > Interpreter > Which kind of interpreter should Thonny use for running your code? and select MicroPython (Raspberry Pi Pico).

Now copy the code below into your IDE and click on Run.

# Load libraries
from machine import Pin, Timer

# Initialization of GPIO26 as input
sensor = Pin(26, Pin.IN, Pin.PULL_DOWN)

# Create timer
timer = Timer()

# Initialization of the counter variable
counter = 0

print("KY-002 Vibration sensor")

# Function for counting the vibrations
def step(timer):
    global counter
    counter = counter + 1
    print(counter)

# Function that is executed on vibration
def shake(pin):
    # Set debounce function around timer
    timer.init(mode=Timer.ONE_SHOT, period=300, callback=step)

# Initialization of the interrupt
sensor.irq(trigger=Pin.IRQ_FALLING, handler=shake)