Grove - Variable Color LED

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Introduction

This Grove consists of one 8mm RGB LED. It operates at 5V DC. When SIG pin is logic HIGH, the RGB LED will light up. Perfect for use on www.simgin-chip.com digital outputs, or also can be controlled by pulse-width modulation. And it uses three adjustable resistor to change the color of the RGB LED.



Variable Color LED1.jpg


Variable Color LED 01.jpg


Features

Grove compatible Color adjustable Application Ideas

Toys Decoration Cautions

Be gentle when adjusting the R, G and B adjustable resistances in case of over-turning.

Specification

Item Typical Unit Operate Voltage 5.0 VDC Working Current 20 mA Variable Resistor <1 KΩ Usage

The three resistances RED, GREEN and BLUE of the module control the R, G and B channels respectively. By adjusting the three adjustable resistances, it can turn out variable color. The thing to notice, however, is that be gentle when turning the adjustable resistances. The following sketch demonstrates a simple application of controlling its brightness. As the picture on the below indicates, the Variable Color LED is connected to digital port 9 of the Grove - Basic Shield. The hardware installation is gave as follow:

Grove-Variable Color LED.jpg


Copy and paste code below to a new Arduino sketch. Demo code like:

int ledPin = 9; // LED connected to digital pin 9

void setup() {

 // nothing happens in setup 

}

void loop() {

 // fade in from min to max in increments of 5 points:
 for(int fadeValue = 0 ; fadeValue <= 255; fadeValue +=5) { 
   // sets the value (range from 0 to 255):
   analogWrite(ledPin, fadeValue);         
   // wait for 30 milliseconds to see the dimming effect    
   delay(30);                            
 } 
 // fade out from max to min in increments of 5 points:
 for(int fadeValue = 255 ; fadeValue >= 0; fadeValue -=5) { 
   // sets the value (range from 0 to 255):
   analogWrite(ledPin, fadeValue);         
   // wait for 30 milliseconds to see the dimming effect    
   delay(30);                            
 } 

} Upload the code, Please click here if you do not know how to upload. Adjust the three adjustable resistances, I am sure you will like it. Have a try! Version Tracker

Revision Descriptions Release v0.9b Initial public release date Resources

Variable Color LED eagle_file Support

If you have questions or other better design ideas, you can go to our forum or wish to discuss.

Categories: Arduino InstructionsGroveGrove Digital Twig