Guide

www.SquishyCircuits.com Page 8
Project2:SquishyRGBLEDController
Summary and Background Knowledge:
In this project, we will use three different voltage divider
circuits to control the brightness of three different LEDs. The
color of the LEDs do not matter, but we have chosen to use a
red, green, and blue LED which are the primary colors of light.
Using them, we can make any color depending on the
brightness of each color. This is similar to a pixel on your TV or
cell phone which work the same way, but are so small your
eyes cannot see the individual colors. The light has to mix
together to create different colors so putting it through a
semi-translucent obeject will help mix the colors (wax paper
works well). All colors mixed together make white!
Materials:
o
Computer with Arduino Software
o
Arduino Uno Board (or similar)
o
Conductive Dough
o
3 LEDs
o
Breadboard
o
3 - 470 Ohm Resistors (or close)
o
Wire
Schematic:
+5V from Arduino
470 Ohm Resistor
To Analog In 0, 1, 2 on Arduino
Conductive Dough
Ground on Arduino
From Digital I/O 9, 10, 11 on Arduino
To Ground on Arduino
LED in Red,
Green, or
Blue
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