LED Strip lights (2 Amps) Short Fade on / Fade Off effect

[danadak]

Human eye has a log response curve to brightness. So use micro to effect
log to linear behavior.

Eye intensity response, contrast sensitivity

Intensity response of the human eye - Weber law, Stevens' power law, and eye contrast sensitivity.

telescope-optics.net

Correcting for non-linear brightness in LEDs when using PWM

When driving an LED with PWM, the brightness (as I perceive it) does not scale linearly with duty cycle. The brightness is slow to ramp up, then increases exponentially with duty cycle. Can anyone

electronics.stackexchange.com

Regards, Dana.

 

[ThomsCircuit]

Try increasing C1, to reduce the PWM frequency?

it had no effect but thank you.
FYI it worked the same way with the darlington TIP. Im going to go ahead and have these made up (PCB's) Ill post back when the boards arrive.

 

[ThomsCircuit]

Human eye has a log response curve to brightness. So use micro to effect
log to linear behavior.

awesome observation. I can hear the code calling me. Might be time i look into Java.