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Arduino project 1

This is my first arduino project.

What does it do?

Communicates with Processing to activate the distance sensor
displays the distance in inches on a liquid display screen
allows the user to toggle the display if the Processing window is clicked

Components used

Arduino Uno Rev 3
16x2 LCD Display
HY-SRF04 Precision Ultrasonic Sensor (HC-SR04 is just as good)

Schematic

Sources

wiring & code for HY-SRF04 Precision Ultrasonic Sensor
wiring & code for LCD 16x2 Liquid Display