Basic tutorial of how to setup a Tilt sensor with the Raspberry Pi.
PARTS:
RPI 3 – https://amzn.to/2VA9pQY
4 Amp Power Adapter – https://amzn.to/2CTptWu
16GB micro SD – https://amzn.to/2SFMwd3
120 pcs jumper cable: https://ebay.to/2VAb9cY
Tilt Sensor: https://amzn.to/2FHIGw4
SCHEMATIC:

CODE:
#!/usr/bin/env python
import RPi.GPIO as GPIO
channel = 21
GPIO.setmode(GPIO.BCM)
GPIO.setup(channel, GPIO.IN, pull_up_down=GPIO.PUD_UP)
def alert(ev=None):
print("Tilt Detected")
def loop():
GPIO.add_event_detect(channel, GPIO.FALLING, callback=alert, bouncetime=100)
while True:
pass
if __name__ == '__main__':
try:
loop()
except KeyboardInterrupt:
GPIO.cleanup()