How can I program 2 PINs at the same board? (LEDs strip)

Projects Programming
1

Hello guys, I'm new with Arduino software and electronic world, so feel free to correct me any expression or error.

I started a project where I have to use Arduino to program some led strip with a fade effect. So I buy a "Adafruit pro trinket 5V 16MHz board" and "5V RGB LED strip".

I was looking for a "fade" code to my 5V LED strip but all tutorial I found was to 12V LED strip...

I want a code wich allow me to modify the following parameters:
-The duration of the fade effect.
-The initial and final brightness of the LED strip.
-Alternate colours in the effect.

Finally I found a code, but I wasn't complete so I modify a little and it works.

Now the problem is that I don't know how to edit this code to send different instruction to 2 PINS (for example 4 and 8 ).

I would like that the LED strip, who is connected to the PIN number 4, fade alternating in blue and yellow. On the other hand, the LED strip connected to PIN number 8 I want that only fade in blue...

Here is the code:

#include "FastLED.h"
#define NUM_LEDS 60
CRGB leds[NUM_LEDS];
#define PIN 4
#define PIN2 8

void setup()
{
  FastLED.addLeds<WS2811, PIN, GRB>(leds, NUM_LEDS).setCorrection( TypicalLEDStrip );
 }

void loop() {
  FadeInOut(0x00, 0xbf, 0xff);
  delay(10);
  FadeInOut(0x41, 0xf5, 0x05);
}

void FadeInOut(byte red, byte green, byte blue){
  float r, g, b;
     
  for(int k = 50; k < 255; k=k+1) {
    r = (k/256.0)*red;
    g = (k/256.0)*green;
    b = (k/256.0)*blue;
    setAll(r,g,b);
  delay(15);  
  }
     
  for(int k = 255; k >= 50; k=k-2) {
    r = (k/256.0)*red;
    g = (k/256.0)*green;
    b = (k/256.0)*blue;
    setAll(r,g,b);
    delay(15);
  }
 }


void showStrip() {
 #ifdef ADAFRUIT_NEOPIXEL_H
   // NeoPixel
   strip.show();
 #endif
 #ifndef ADAFRUIT_NEOPIXEL_H
   // FastLED
   FastLED.show();
 #endif
}

void setPixel(int Pixel, byte red, byte green, byte blue) {
 #ifdef ADAFRUIT_NEOPIXEL_H
   // NeoPixel
   strip.setPixelColor(Pixel, strip.Color(red, green, blue));
 #endif
 #ifndef ADAFRUIT_NEOPIXEL_H
   // FastLED
   leds[Pixel].r = red;
   leds[Pixel].g = green;
   leds[Pixel].b = blue;
 #endif
}

void setAll(byte red, byte green, byte blue) {
  for(int i = 0; i < NUM_LEDS; i++ ) {
    setPixel(i, red, green, blue);
  }
  showStrip();
}

If you know other simple code post it please!

Thank you so much for your patience!

2

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3

Suggest you gain some experience and go through the examples that come with the Arduino IDE.

These examples cover the things you need to get started to understand the Arduino hardware and wiring code.

4

Another suggestion that helps me, draw a block diagram of what you want to happen. Then go back and draw another and include all the small steps needed to operate the Arduino. For instance, the first may say read A/D and the second would include all the steps to setup the A/D etc.

I find having (choosing) to layout the small steps forces me to think the problem all the way through.

I also use Excel as a way to organize the setup of timers, register settings etc. Although this may be better applied when you are coding more advanced projects.