Digital I/O with Arduino Boards + Diffuser

Description:
Microcontrollers have special pins for Pulse width modulation which enables us to simulate LED brightness. In this assignment we change the LED brightness based on the user input from the serial port.
 
Components Used:
Arduino - 1
220 ohm resistor - 3
LED - 3
Breadboard - 1
 
Code:
Attached.
 

Description:
 

Description:

The goal of this assignment was to build upon our previous knowledge of programming an Arduino Uno to make an LED blink. In Parts 1 & 2 of this lab, I learned to make the LED fade and then built a more complicated circuit with three LEDs of different colors. Part 3 of this lab introduced me to serial communications. I modified some example code to, when given a command in the serial monitor: 

* change the brightness levels of the LEDs 

DESCRIPTION

Description:

  Description
 
This second lab was an introduction to digital input and output on the Arduino Uno.
 
My hardware consisted of 3 LEDs (colors: red, green and blue) placed in parallel and spatially close to one another on the breadboard.   I designed a diffuser using a tennis ball packet and plastic bag.  I put this diffuser over the 3 LEDs so that when on in certain brightness configurations the diffusion of those 3 colors would produce other colors.
 

Description
In this lab, we investigate the use of pulse-width modification to fake an analog signal from a digital one, by quickly pulsing a digital signal at varying frequencies. The circuit is a simple modification from last week's, whereby the three LEDs are connected to PWM-capable pins (numbers 9, 10, and 11) through a 220 ohm resistor. The circuit was easy to implement, though I took a few extra minutes to organize the three circuits in such a manner that the LEDs were directly adjacent to each other.

Description
Components
1x Arduino
1x Breadboard
3x LED lights (1 each of red, green and blue)
7x Wires
3x 220 ohm resistors
1x Macbook Pro
1x Lampshade, lined with foil
Diffuser
I tried different materials for creating a diffuser - cotton lined inside a bottle opener, foil inside a shot glass before finally settling on using a lamp shade lined with foil, to reflect light. I felt that this gave me the best effect of light mixing. 

Description 
For this lab, we began with our assignment from Lab 1 but added two more LEDs and connected the wires to pins that support Pulse Width Modulation (PWM). We used a provided code which made the LEDs appear to fade into different color combinations.

Description:
I created an Arduino circuit that lights up three different LEDs based on input. Typing in multiple letters such as 'r', 'g', or 'b' will set the corresponding colored LED with different values. For example: typing in five 'r's (rrrrr) will set the red LED to 50%. I also created a diffuser for the LEDs using the cotton-based fabric from cleaning wipes. I tied a rope along the bottom to better cover the LEDs
 
Materials used:
1 Arduino Uno
1 Breadboard
3 LED Lights