KY-020 Tilt switch

int tilt_switch = 10; // Declaration of the sensor input pin
int value; // Temporary variable
   
void setup () {
  pinMode(tilt_switch, INPUT); // Initialization sensor pin
  Serial.begin(9600); // Initialization of the serial monitor
  Serial.println("KY-020 Inclination test");
}
   
void loop () {
  // The current signal at the sensor is read out
  value = digitalRead(tilt_switch);
  // If a signal could be detected, this is displayed on the serial monitor.
  if (value == LOW) {
    Serial.println("Inclination recognized");
    delay(1000); // 1s 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.PullUp)
		basic.forever(function () {
		    serial.writeLine("" + (pins.digitalReadPin(DigitalPin.P1)))
		    if (pins.digitalReadPin(DigitalPin.P1) == 0) {
		        serial.writeLine("Tilt angle reached")
		    } else {
		        serial.writeLine("Tilt angle not reached yet")
		    }
		    serial.writeLine("_____________________________________")
		    basic.pause(1000)
		})
	

This module contains a tilt switch that closes a circuit depending on its orientation. Inside the switch is a small ball that connects the contacts when the tilt is changed. When the module is tilted, the ball moves and short-circuits the input pins, generating a signal. This simple but effective mechanism enables the detection of tilt changes and is ideal for applications such as motion detection, security and alarm systems or as a switching mechanism in various projects. The tilt switch is easy to integrate and provides a reliable way to detect motion and tilt.

Technical Data
Operating voltage	3,3 V - 5 V
Dimensions	19 x 15 x 5 mm

Pin assignment

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

Code example

This is a sample 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 GPIO as input
sensor = Pin(26, Pin.IN, Pin.PULL_DOWN)

# Create timer
timer = Timer()

# Variables initialization
counter = 0

print("KY-020 Inclination test")

# Function for counting steps
def step(timer):
    global counter
    counter = counter + 1
    print("Inclination recognized:", counter)
    
# Function that is executed on inclination
def shake(pin):
    # Set debounce function timer
    timer.init(mode=Timer.ONE_SHOT, period=100, callback=step)

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