Connect a Raspberry Pi to a KY-020 Tilt switch

Parts Required

You can connect to the module using dupont style jumper wire. There is no reason this device will not work with any Raspberry Pi hardware that you have – in this example a Raspberry Pi 4 but you can use a Zero if you want a lower cost solution

Name		Link
Raspberry Pi 4		Aliexpress link Amazon Ebay
37 in one sensor kit		Aliexpress link Amazon link
Connecting cables		Aliexpress link Amazon Ebay

Schematic/Connection

Code Examples

Basic example in  thonny, running on the Raspberry Pi

import RPi. GPIO  as  GPIO
import time
   
GPIO.setmode (GPIO.BCM) 
   
# Here the input pin to which the tilt switch is connected
GPIO_PIN = 24
GPIO.setup (GPIO_PIN, GPIO.IN) 
   
print ("tilt switch test [press CTRL+C to exit the test]")
   
#  This output function is executed when a signal is detected
def outputFunction(null) :
    print("tilt switch triggered")
   
#  When a signal is detected (falling signal edge), the output function is triggered
GPIO.add_event_detect(GPIO_PIN, GPIO.FALLING, callback= outputFunction ,  bouncetime=100)  
   
# Main loop
try:
    while True:
        time.sleep (1) 
   
except KeyboardInterrupt:
    GPIO.cleanup ()

REPL Output

Tilt the switch

>>> %Run -c $EDITOR_CONTENT
tilt switch test [press CTRL+C to exit the test]
tilt switch triggered
tilt switch triggered
tilt switch triggered
tilt switch triggered

Links

https://github.com/getelectronics/PIBits/tree/master/Sensor%20Kit/KY-020%20Tilt%20switch