Data Sheet

VMA502
V. 01 – 28/11/2016 15 ©Velleman nv
7.8 The Tilt Sensor Switch
A tilt sensor will detect orientation and inclination. They are small, low power and easy-to-use. If used properly,
they will not wear out. Their simplicity makes them popular for toys, gadgets and other appliances. They are
referred to as mercury, tilt or rolling ball switches.
The Simple Tilt-Activated LED
This is the most basic connection of a tilt switch, but can be a handy while one is learning about them. Simply
connect in series with an LED, resistor and battery.
Reading the Switch State with a Microcontroller
The layout below shows a 10K pull-up resistor. The code states the built-in pull-up resistor that you can turn on
by setting an input pin to the high output. If you use the internal pull-up you can skip the external one.