Submitted by ArduinoHack (not verified) on Fri, 04/03/2009 - 18:42.
Garrett wrote:
RGB LEDs contain three elements that each provide a narrow wavelength band centered on red, green, and blue wavelengths. These colors each interact with the sensors in our eyes to appear as a mixed color. The actual wavelength emitted by each LED never changes.
I agree for the individual led elements, but as a whole the luminous flux and the wavelength of the elements both affect the mixed color. Temperature and age of the elements can change both.
I was referring to the overall RGB color mix.
I've been playing with a few Shiftbrites and cannot eliminate
the flicker when running just three in a chain on an arduino. Driving me nuts.
Power supply is clean (5.5V 2A) and even tried on 7.2V battery. Yet the same setup works fine off an old bit bang interface, no flicker at all.
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Garrett wrote:RGB LEDs
I agree for the individual led elements, but as a whole the luminous flux and the wavelength of the elements both affect the mixed color. Temperature and age of the elements can change both.
I was referring to the overall RGB color mix.
I've been playing with a few Shiftbrites and cannot eliminate
the flicker when running just three in a chain on an arduino. Driving me nuts.
Power supply is clean (5.5V 2A) and even tried on 7.2V battery. Yet the same setup works fine off an old bit bang interface, no flicker at all.