Hi I have total of 20 CRGBset like CRGBset stripone(leds(0,29)) CRGBset striptwo(leds(30,59)) . .

Neo_Maximus · October 17, 2017, 7:33pm

Hi
I have total of 20 CRGBset like

CRGBset stripone(leds(0,29))
CRGBset striptwo(leds(30,59))
.
.
.
CRGBset striptwenty(leds(570,599))

I would like to show colordata on stripone and then copy to all other CRGBset at the same time

Void Showcolor (){

Stripone = colordata;

Striptwo = colordata;
.
.
.
Striptwenty= colordata;

FASTLED.show();

}

How I can copy One strip colordata to another with less coding?

Please advise
Thanks

Ken_White · October 17, 2017, 8:37pm

@Neo_Maximus - To do what you are trying to do, you can put your CRGBSets in an array and use a “for” statement to copy the data to each array element. See the following to see how to create an array of CRGBSets and see the CD77_arrayfill() function :

gist.github.com

https://gist.github.com/chemdoc77/31632b540908b6788c9340989eeb8bfc

CRGBSet_Example_3_with_array_fill__and_colorwipe.ino

// Testing FastLED's CRGBSet array with a fill the whole array function and with a colorwipe function
// by Chemdoc77

#include "FastLED.h"
#define NUM_LEDS 24
#define Data_Pin 6
#define chipset NEOPIXEL
#define BRIGHTNESS  50

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Neo_Maximus · October 18, 2017, 7:40am

@Ken_White
Thank you for your time.
This is exactly what I want
Also I have a question
FASTLED.delay() used in the example is a blocking delay or non blocking?

Ken_White · October 18, 2017, 11:51am

@Neo_Maximus - I am glad this works for you. I am not sure what you mean by blocking delay and non blocking delay. Are you talking about interrupts?

You can replace delays in a sketch by using the EVERY_N_MILLIS function or other Every_N functions. @Andrew_Tuline is an advocate of not using delays in a sketch and replacing them with EVERY_N functions. He has a good tutorial on this at:

github.com

atuline/FastLED-Demos/blob/master/every_n_example/every_n_example.ino

/* every_n_example
 *
 * By: Andrew Tuline
 * 
 * Date: February, 2017
 *
 * This demonstrates how to use the EVERY_N_MILLISECONS function with a variable timer.
 * 
 * It just moves an active LED up the strip in accordance with a timer that changes as a sine wave.
 *
 */


#include "FastLED.h"                                          // FastLED library.

#if FASTLED_VERSION < 3001000
#error "Requires FastLED 3.1 or later; check github for latest code."
#endif

#define qsubd(x, b) ((x>b)?b:0)                               // Clip. . . . A digital unsigned subtraction macro. if result <0, then x=0. Otherwise, x=b.

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Also, see my sketch showing how to do this at:

gist.github.com

https://gist.github.com/chemdoc77/5d16cb887ac53a6f3fb52574a879a543

CD77_FastLED_millis_replaces_delay.ino

// EVERY_N_MILLIS used to replace delay by Chemdoc77


#include "FastLED.h"
#define NUM_LEDS 24
#define DATA_PIN 6
#define LED_TYPE NEOPIXEL 

int brightness = 30;  // Adjust from 0 to 255 to set brightness.
uint8_t x=0;

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marmil · October 18, 2017, 4:13pm

@Neo_Maximus http://FastLED.delay() is blocking.

Neo_Maximus · October 19, 2017, 4:47pm

@Ken_White

+Marc Miller

Thank you

Having any idea to make a radar scanning kind of pattern ?
As I mentioned earlier I am using 20 CRGset of led APA 102(each set 30 pixels)

I tried with Sinelon example which move a dot with fading trial

How can I do the same effect if the CRGBset leds are arranged to form a circle

Each CRGBset will rotate with fading trail.

Thanks

Ken_White · October 19, 2017, 11:19pm

@Neo_Maximus - you might try a different approach to a radar scanning animation. Look at @Sean_Clohesy 's radar sketch at:

https://plus.google.com/+SeanClohesy/posts/2BSgqDkncS6

also see a couple of the functions in my sketch based on @Jason_Coon 's tree code at:

https://plus.google.com/102004717133653297761/posts/1XeG3sKGu9z

This might be of help to you.

Neo_Maximus · October 21, 2017, 8:51pm

@Ken_White
How I can mirror one CRGBSet to another.

I tried like this.
CRGBset stripone(leds(0,29)) // normal - d
CRGBset striptwo(leds(59, 30)) // mirror -

But not working the way I want.

Any idea?

marmil · October 21, 2017, 9:54pm

I tested out mirroring a bit here:

github.com

marmilicious/FastLED_examples/blob/master/CRGBSet_example2.ino

// Marc Miller, Oct 2017

#include "FastLED.h"
#define NUM_LEDS 32

//CRGB leds[NUM_LEDS];  // Not using this.  Using CRGBArray instead.
CRGBArray<NUM_LEDS> leds;

CRGBSet partA(leds(0,NUM_LEDS/2-1));  // First half of strip.
CRGBSet partB(leds(NUM_LEDS/2,NUM_LEDS-1));  // Second half of strip.


//---------------------------------------------------------------
void setup() { 
  delay(500);
  FastLED.addLeds<LPD8806, 11, 13, GRB>(leds, NUM_LEDS);
  FastLED.setBrightness(255);
}

//---------------------------------------------------------------

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Neo_Maximus · October 22, 2017, 7:21am

@marmil

Hi

I have used some codes from demoreel and some from your CRGBSet example.

I have posted the code (My Appication has 20 CRGBSet, but for testing i have made only 6 CRGBSet)

I wanted to move a dot on Strip_1 in forward direction and on Strip_2 in reverse direction

please look at line 34 and 35 , if i uncomment line 34 dot on strip_2 is moving forward

If i uncomment line 35 to make reverse movement it is not happening

As i understand the below line is equal to CRGBSet Strip_2( leds( 47, 24));
So in CRGBSet Strip_2, led(47) is equal to led(0) am i right?

CRGBSet Strip_2( leds((pps-1)+(pps1), pps1 ));

please advise where am i making mistake.

gist.github.com

https://gist.github.com/neoneomaxim/9294010116d610e185a9f6bd06d54c88

CRGBSet_TEST

#include "FastLED.h"

FASTLED_USING_NAMESPACE


//credit to -Mark Kriegsman
//credit to -Marc Miller


#if defined(FASTLED_VERSION) && (FASTLED_VERSION < 3001000)

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marmil · October 22, 2017, 2:46pm

Hmmm, I don’t see why it’s not working. Maybe just work with pixel numbers until you sort it out, and then replace with the pps formulas later.

Neo_Maximus · October 22, 2017, 3:08pm

@marmil

Yes I did. I used pixel number also instead of pps.
Same issue.

CRGBSet Strip_1 (leds(0, 23));

CRGBSet Strip_2 (leds(47,24));

Any Idea?