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led [2016/06/08 14:59]
psykhaze [RGB LEDs]
led [2016/06/15 12:40]
psykhaze [Introduction]
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 ====== LED ====== ====== LED ======
  
-{{ ::​neonking:​leds.jpg?​direct&​500 |}}+{{ :​neonking:​leds.jpg?​direct&​350|}}
  
 ===== Introduction ===== ===== Introduction =====
  
-LED is an industry acronym for **Light Emitting Diode**. These are usually small little "​bulbs"​ that glow in different colors when they are "​turned on" ​(most common colors are red, green,​yellow,​ blue or white)  ​+LED is an industry acronym for **Light Emitting Diode**. These are usually small little "​bulbs"​ that glow in different colors when they are "​turned on" ​
  
-That's also a generic term used for the lighted display on calculators and other numeric displays; they are made up of 7 distinct straight line "​bar"​ diodes that when turned on display light in a "​portion of a line" (instead of a dot) pattern. The pattern combinations can be turned on or off (does not conduct currentto form numbers or in some cases, alphanumeric characters. Some of these had an 8th "​light"​ which was a decimal.+//(most common colors ​are red, green,​yellow,​ blue or white// 
  
-LCDs emulate this pattern style, though they are NOT diodes. The first to use the style was the "​nixie"​ tube from the early 50's. The pattern is still in use today, though nixies have gone to the vacuum tube graveyard. 
-===== White / Blue LEDs issue ===== 
  
-It has been proven recently that the use of **high brightness White and Blue LEDs are not good to human sight**. The output light spectrum for these LEDs is some harsh for the eye. You should prefer using other colors LEDs or not using them too much. 
  
 ===== RGB LEDs ===== ===== RGB LEDs =====
  
-RGB (Red Green Blue) or multicolor LEDs can be serial driven by a core32. Some tests have already been made with  WS2812 ( APA106 ) LEDs  and a core STM32 through J4B Pin.+RGB (Red Green Blue) or multicolor LEDs can be serial driven by a core32. Some tests have already been made with  ​**WS2812 ( APA106 )** LEDs  and a core STM32 through J4B Pin. 
 + 
 +<wrap tip>​Original Forum Thread here: [[http://​midibox.org/​forums/​topic/​19752-rgb-hue-sweep/​|RGB LEDs]]</​wrap>​ 
 + 
 + 
 +===== White / Blue LEDs issue ===== 
 + 
 +It has been proven recently that the use of **high brightness White and Blue LEDs are not good to human sight**. The output light spectrum for these LEDs is some harsh for the eye. You should prefer using other colors LEDs or not using them too much. 
  
-Original Forum Thread here: [[http://​midibox.org/​forums/​topic/​19752-rgb-hue-sweep/​|RGB LEDs]] 
led.txt · Last modified: 2016/07/10 15:03 by psykhaze