fastLED- What does .setCorrection(TypicalLEDStrip); do?

Other Hardware LEDs and Multiplexing
1

fastLED- What does .setCorrection(TypicalLEDStrip); do?
My sketches work the same with or without this member function.

FastLED.addLeds<LED_TYPE, DATA_PIN, COLOR_ORDER>(leds, UM_LEDS).setCorrection(TypicalLEDStrip);
1 Like
2

as I have it already open:

See row 529 of fastLED.h

	/// Set a global color correction.  Sets the color correction for all added led strips,
	/// overriding whatever previous color correction those controllers may have had.
	/// @param correction A CRGB structure describin the color correction.
	void setCorrection(const struct CRGB & correction);
3

"as I have it already open:"
You are braver than I am.

I also found a few definitions for color corrections in color.h.
Now for some experiments to see what effect this parameter has on the colors.

///@file color.h
/// contains definitions for color correction and temperature
///@defgroup ColorEnums Color correction/temperature
/// definitions for color correction and light temperatures
///@{
typedef enum {
   // Color correction starting points

   /// typical values for SMD5050 LEDs
   ///@{
    TypicalSMD5050=0xFFB0F0 /* 255, 176, 240 */,
    TypicalLEDStrip=0xFFB0F0 /* 255, 176, 240 */,
  ///@}

   /// typical values for 8mm "pixels on a string"
   /// also for many through-hole 'T' package LEDs
   ///@{
   Typical8mmPixel=0xFFE08C /* 255, 224, 140 */,
   TypicalPixelString=0xFFE08C /* 255, 224, 140 */,
   ///@}

   /// uncorrected color
   UncorrectedColor=0xFFFFFF

} LEDColorCorrection;
4

Looks like it turns down the green a lot and the blue a little bit.