Hey, i got a shift register (74hc595) and i'd like to light up my rgb led. Everything is connected but i have problems with the code.
Say my rgb led is connected to Q0,Q1 and Q2 of my shift register (Pin 15,1,2). How can i light up the rgb led (i want to switch between the color blue, green and red). I got this example which is working, but i don't know how to go on and how to achieve the thing mentioned above.
//**************************************************************//
// Name : shiftOutCode, Hello World
// Author : Carlyn Maw,Tom Igoe, David A. Mellis
// Date : 25 Oct, 2006
// Modified: 23 Mar 2010
// Version : 2.0
// Notes : Code for using a 74HC595 Shift Register //
// : to count from 0 to 255
//****************************************************************
//Pin connected to ST_CP of 74HC595
int latchPin = 8;
//Pin connected to SH_CP of 74HC595
int clockPin = 12;
////Pin connected to DS of 74HC595
int dataPin = 11;
void setup() {
//set pins to output so you can control the shift register
pinMode(latchPin, OUTPUT);
pinMode(clockPin, OUTPUT);
pinMode(dataPin, OUTPUT);
}
void loop() {
// count from 0 to 255 and display the number
// on the LEDs
// take the latchPin low so
// the LEDs don't change while you're sending in bits:
digitalWrite(latchPin, LOW);
// shift out the bits:
shiftOut(dataPin, clockPin, MSBFIRST, 255);
//take the latch pin high so the LEDs will light up:
digitalWrite(latchPin, HIGH);
// pause before next value:
delay(500);
}
This lights up my rgb led which is has the color white-blue with this code.
Please help me out and give me hints how to change the code so i can control whether my rgb led lights up green, red or blue.
Thanks !