https://github.com/camillevilla/rgb-clock

experiments with an arduino clock
https://github.com/camillevilla/rgb-clock

Last synced: 10 days ago
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experiments with an arduino clock

• Host: GitHub
• URL: https://github.com/camillevilla/rgb-clock
• Owner: camillevilla
• Created: 2017-11-05T00:34:09.000Z (about 7 years ago)
• Default Branch: master
• Last Pushed: 2017-11-05T00:35:00.000Z (about 7 years ago)
• Last Synced: 2024-11-06T17:58:00.665Z (about 2 months ago)
• Language: Arduino
• Size: 2.93 KB
• Stars: 0
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: readme.h

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README

        
/******************************************************************

 * Hardware connections:

 * ======================

 * An RGB LED is actually three LEDs (red, green, and blue) in

 * one package. When you run them at different brightnesses,

 * the red, green and blue mix to form new colors.

 * 

 * Starting at the flattened edge of the flange on the LED,

 * the pins are ordered RED, COMMON, GREEN, BLUE.

 * 

 * Connect RED to a 330 Ohm resistor. Connect the other end

 * of the resistor to digital pin 9.

 * 

 * Connect COMMON pin to GND.

 * 

 * Connect GREEN to a 330 Ohm resistor. Connect the other end

 * of the resistor to digital pin 10.

 * 

 * Connect BLUE to a 330 Ohm resistor. Connect the other end

 * of the resistor to digital pin 11.

 * 

/*****************************************************************/

/******************************************************************

 * This example shows the use of functions to simplify the code 

 * in the main loop() of your sketch.

 *

 * Functions are basically new commands that we write. This is 

 * useful to keep your code clean, easy to read, and efficient.

 * 

 * In this example, we have three new functions:

 *   mainColors(), showSpectrum(), and RGB(int color)

 * 	

 * mainColors() steps through eight colors by turning on the individual

 * LEDs (RED, BLUE, and GREEN) on and off in various combinations. This

 * function turns the LEDs full-on and full-off. If you want to generate

 * more than eight colors, you can do so by varying the brightness of the 

 * individual LEDs between full-on and full-off. 

 * 

 * The analogWrite() function lets us do this. This function lets you dim

 * an LED from full-off to full-on over 255 steps. 

 *

 * RGB(int color) - takes an input parameter, "color" and uses this in

 *   its code. A variable called "color" is passed into this function

 *   with the value of the number in parentheses.  

 * 

 * showSpectrum() steps through all the colors of the RGB LED, displaying a

 * rainbow. showSpectrum() calls RGB(int color) over and over again to do this.

 *

 *

 * ===================

 * Calling functions:

 * ===================

 * Making a call to a function means referencing or using the code. Because

 * both mainColors() and showSpectrum() both have no parameters between the 

 * parentheses, we call them with a simple line such as:

 *

 * mainColors();    or      showSpectrum();

 * 

 * RGB(int color), on the other hand, has an input parameter, "color." 

 * To call RGB, you must pass it an integer value. To use RGB to display all RED, 

 * you would write the line:

 *

 * RGB(0);     // displays all RED

 *

 * or, if you wanted to show a color in between RED and GREEN

 *

 * RGB(128);   // half way between RED and GREEN.

 * 

/*****************************************************************/