Smooth fading of led's at low light

is possible fade led's using pwm smoothly on low light values, 0-100? trying have set of 4 mean ldd drivers, 4 different colors, fade led lights on long period of time, 20 min. have tried using multiple libraries made fading led's supposed done on short periods of time. when trying modify examples fade on long time stepping effect on low levels of light, 0-100.

when posting on forum s/w issues customary if not mandatory post code having issues with. announcing having problems means nothing if not willing take time post code. part , try ours. it's 2 way street. in addition , since driving hardware, require schematic (hand-drawn schematic photographed cell phone sufficient) datasheets devices (be leds or whatever).
the exception garden variety red led. no datasheet required that.

Arduino Forum > Using Arduino > LEDs and Multiplexing > Smooth fading of led's at low light

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