Does anyone know how to print the current HSV values of all leds in

Stephen_Kramer · July 29, 2017, 5:43am

Does anyone know how to print the current HSV values of all leds in a simple 1D array?

Thanks!

marmil · July 29, 2017, 6:25am

You would have to convert from RGB back to HSV.

// Convert rgb to hsv. Works best with fully saturated colors.
CRGB rgb;
CHSV hsv;
hsv = rgb2hsv_approximate( rgb );

If you’re working in HSV to begin with you can use a second array to store the HSV values.

Stephen_Kramer · July 29, 2017, 6:42am

I am using HSV I just want to print the HSV values for each led to the serial monitor for debugging purposes.

marmil · July 29, 2017, 7:26am

Is this anything like what you’re looking for?

github.com

marmilicious/FastLED_examples/blob/master/print_HSV_values.ino

//***************************************************************
//  Print out HSV values to serial monitor example...
//
//  Marc Miller, July 2017
//***************************************************************

#include "FastLED.h"
#define DATA_PIN    11
#define CLOCK_PIN   13
#define LED_TYPE    LPD8806
#define COLOR_ORDER GBR
#define NUM_LEDS    32

#define BRIGHTNESS  50
CRGB leds[NUM_LEDS];
CHSV hsv[NUM_LEDS];


//---------------------------------------------------------------
void setup() {

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If not what you’re asking, please give more details, code, and show at what point in the loop you’re wanting to print out the data.

Stephen_Kramer · July 29, 2017, 8:38pm

Yes thank you it works great! Would you happen to know a way to fade on leds in a rapid and smooth manner? For one animation I think setting the value looks too abrupt and harsh, I’m looking for a softer effect, but doing a ramp in a for loop is too slow (on an Uno).