RGB led to make different light effects

Projects Programming
1

I'm trying to get an RGB led to make different light effects when a button is pressed. My intention is for the led to start with a series of colors, go to a fixed color (in my case green) and, finally, go to a rainbow-like effect with all possible colors. The problem I found is that when I press the button it doesn't change the mode, because it doesn't recognize when I press it. I understand that the problem is that the delay function prevents the Arduino from reading the value of the button, but I don't know how to replace it, nor how to make the code recognize the button at any time. Can somebody help me? I leave the code below in case it helps. For the record, I don't know how to program and that this is a project I wanted to do for myself, but of course it's getting hard.

//LED FORMATO RGB 

#define LED_ROJO 9 
#define LED_VERDE 11 
#define LED_AZUL 10 
#define botonpin 3
int rojo = 0; 
int verde = 0; 
int azul = 0; 
int time = 3;
int time2 = 2000;
int i = 1;
int estadoboton = 0;

void cambiarcolor (int rojo,int verde,int azul) 
{
  analogWrite(LED_ROJO, rojo); 
  analogWrite(LED_VERDE, verde); 
  analogWrite(LED_AZUL, azul); 
}

void setup() 
{
  pinMode(LED_ROJO, OUTPUT); 
  pinMode(LED_VERDE, OUTPUT); 
  pinMode(LED_AZUL, OUTPUT); 
  pinMode(botonpin,INPUT);
  Serial.begin(9600);
}

void loop() 
{
  if (digitalRead(botonpin) == HIGH){
     (i++);
    if (i>3) i =1;}
  
  Serial.println(i);
  delay(200);
  
  switch (i){
    case 1:
     cambiarcolor(255, 0, 0); 
     delay(time2); 
     cambiarcolor(0, 255, 0); 
     delay(time2); 
     cambiarcolor(0, 0, 255); 
     delay(time2); 
    break;
    
    case 2:
     analogWrite(LED_VERDE,255);
    break;
    
    case 3:
     for (int verde=255;verde>=0;verde--){ 
      cambiarcolor(0,verde,255); 
      delay(time); 
      }   
     for (int rojo=0;rojo<=255;rojo++){ 
      cambiarcolor(rojo,0,255);     delay(time); 
      } 
     for (int azul=255;azul>=0;azul--){ 
      cambiarcolor(255,0,azul); 
      delay(time); 
      } 
     for (int verde=0;verde<=255;verde++){ 
      cambiarcolor(255,verde,0); 
      delay(time); 
      } 
     for (int rojo=255;rojo>=0;rojo--){ 
      cambiarcolor(rojo,255,0); 
      delay(time); 
      } 
     for (int azul=0;azul<=255;azul++){ 
      cambiarcolor(0,255,azul); 
      } 
    break;
  }
}

This is the circuit I've been using, I don't even know if it's done right:

image
image971×667 55.5 KB

2

Por favor publique en inglés.

Please post in English.

3

How is the button wired? Is there a pulldown resistor on the button input?

Please post a schematic. Written descriptions are always more ambiguous than a drawing. Hand drawn, photographed and posted is fine. Include all pin names/numbers, components, their part numbers and/or values and power supplies.

To get rid of delays, use millis() or micros() for timing.
Non-blocking timing tutorials:
Blink without delay().
Beginner's guide to millis().
Several things at a time.

I think that you should edit your thread title, too. Fewer members will click on a non-English thread.

4

Thanks for your help, these tutorials have been very usefull. I've just uploaded an image with the wiring and I corrected the title. Again, I am very grateful for your help. Thanks.

5

buttons are typically connected between the pin and ground, the pin configured as INPUT_PULLUP to use the internal pullup resistor which pulls the pin HIGH and when pressed, the button pulls the pin LOW.