Tilt switch
The tilt switch module supplies a digital signal. When the left hand side (as shown above) is tilted downwards a low signal is output. When the left hand side is tilted upwards high signal is output.
Tilt switch PCB layout
Circuit details
Tilt switch design symbol
Tilt switch circuit details
To generate a digital signal from the tilt switch, it is connected as part of a potential divider. Tilting the switch so that the internal ball bearing rolls away from the switch contacts produces a high resistance between the switch terminals (compared with R7) making the output signal low. Tilting the switch so that the internal ball bearing rolls towards the switch contacts produces a low resistance between the switch terminals (compared with R7) making the output signal high.
Programming
Reading the state of the tilt switch switch requires the same code as reading the state of a push button. Details are given here
