stardustsailor
Well-Known Member
I've made an Arduino based device ,not so long ago ,which bears the name " AutosDias" and it's purpose is to dim the LEDS/COBs to imitate the diurnal irradiance ( Dawn=>Noon=>Dusk) .Fully adjustable.It uses PWM dimming.Lot's of great info here guys thx
as I run differents wavelenghts on different timers, I'm very intersted in those things ...
I also believe in benefits of dimming, that's why I'd like to understand this point:
I've read that pwm dimming produces kind of flickering, (visible on a video recording), but as this 3 in 1 dimming function is just an input command, I used to believe that the 3 types of command should produce the same result, am I wrong ?
or maybe your point was about the powering-on moment, as pwm is not something constant, depending on the driver technology, it could run at full power for the 1st milliseconds, but still voltage dimming shouldn't be concerned ...
There's obviously something that I'm missing ...
https://www.rollitup.org/t/the-autos-dias-project.855633/#post-11188892
PWM dimming is the worst option ,regarding the 3in1 dimming function of many branded drivers.
Not so much for plant illumination ,but for human vision illumination ,even at high frequencies of PWM ,
still causes flickering of LEDs / COBs .Not detectable from the human eye ,
but for sure detectable from human nervous system !
That's why I prefer either the "via resistor " or either "via voltage " control of the 3in1 dimming function.
Cheers.
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