Is it possible to scale the brightness of a show like the raibow with

Kuike_FPV_Vincent_Ba · December 25, 2018, 12:17pm

Is it possible to scale the brightness of a show like the raibow with a slider in the blynk app?
I am a total noob and did try some things(copy paste stuff only) but that did not work. I am using the code from the attached link to control my led strip.
The strip is in my bedroom, but when a show is on it will light up the whole bedroom and it aint fancy anymore.

So anyone any thoughts?

marmil · December 25, 2018, 2:30pm

Yes, here’s a Blynk example that has adjustable brightness using a slider.

github.com

marmilicious/FastLED_examples/blob/master/Blynk_Teensy32_USB_test.ino

//***************************************************************
//  Blynk test with Teensy 3.2 and USB connection.
//
//  Four widgets were used to send data from the Blynk app:
//  - Button (turns display on/off)
//  - Slider (controls brightness)
//  - zeRGBa (RGB data sets pixel color)
//  - Menu   (selects a pattern)
//
//  Looks like this on my phone:
//  https://i.imgur.com/6x9AvOQ.png
//
//  Marc Miller, Oct 2017
//       update: Feb 2018 - added a simple Menu example
//***************************************************************


/*************************************************************
  Download latest Blynk library here:
    https://github.com/blynkkk/blynk-library/releases/latest

This file has been truncated. show original

Also note, fill_rainbow aways uses full brightness (and saturation) so if you want to darken it some (without using the master brightness control) you have to manually fade the brightnes. Example:

github.com

marmilicious/FastLED_examples/blob/master/rainbow_brightness_and_saturation.ino

//***************************************************************
//  Example of changing the brightness and saturation of
//  FastLED's fill_rainbow, which by default fills pixels with
//  the rainbow at full brightness and full saturation.
//
//  Marc Miller, Sept 2018
//***************************************************************

#include "FastLED.h"
#define NUM_LEDS 12
CRGB leds[NUM_LEDS];

uint8_t V;  //brightness for rainbow
uint8_t S;  //saturation for rainbow
boolean toggleS;
boolean toggleV;

//Amount to tint (desaturate) rainbow.  Can use either RGB or HSV format
//CRGB tintAmt(128,128,128);
CHSV tintAmt(0,0,90);

This file has been truncated. show original

Kuike_FPV_Vincent_Ba · December 25, 2018, 2:57pm

@marmil okay thanks i am going to check that out and hope i can create something out of it.

Kuike_FPV_Vincent_Ba · December 30, 2018, 10:45am

@marmil hey thanks this worked for me. Maybe you can also awnser my next qeustion??
https://plus.google.com/114860837137424020048/posts/DiFTPdrXZyj