Raspberry Pi Pico
In its simplest form, the tilt sensor can tell you whether or not you are tilting the sensor along a single axis. The general principle is to have a metal ball that moves when the sensor is tilted, making or breaking a circuit, much as pressing a button completes or breaks a circuit. Older sensors used mercury - sensors you use should state that they are free of mercury. The sensor on this page are of an on/off nature. You're not getting any measure of how much the sensor is tilted, just that it is.
This was my setup,
You might be able to see thing a little more clearly in this Fritzing diagram,
from machine import Pin from time import sleep tilt = Pin(15, Pin.IN, Pin.PULL_UP) led = Pin(25, Pin.OUT) while True: led.value(tilt.value()) sleep(1)
Note that, with the pull up resistor, the tilt switch remains low (closed) until it is tilted. At this point, it returns a high and the LED goes on.