Hey, this is my first post on here, the rules seemed a bit strict so I hope I'm posting in the right place. Anyways, I've been wanting to build my own Icelight (http://fjwestcott.com/product/the-ice-light). It seems pretty straight forward, I'll be using an 18 inch led light tube, probably around 7 watts.
The biggest problem I'm running into is Dimming. I don't know wether to use PWM or CCR. PWM seems perfect, except for flickering, which may cause problems with photography, here's a link to someone that had issues with PWM in video (http://provideocoalition.com/aadams/story/pulse_width_modulation_is_not_your_friend/). I don't plan on doing a lot of video, but I don't want to run into issues if I do, I guess I can always put it on full power if I need to. CCR, on the other hand, doesn't flicker, but does have color shift issues, after a ton of time on google I still don't know exactly how much color shifting it does, and if it'll be a problem in photography. I think I've heard somewhere that it can get hot too. Is there a clear reason to choose one or the other, or do i just have to choose which pros and cons I'd rather deal with?
Another important question, how much can an Arduino take? What can I do if the light needs more power than the Arduino can work with. eventually I want to use an Arduino mini or nano, would that be wise with a project like this? I'm still learning about circuitry and how all that voltage and wattage and...stuff works....
My last question would be how do I know how many lumens is acceptable, that's probably more of a question for a photography forum, so i don't expect too many people to know here, but If you do, I'd appreciate it.
I know some of these questions might be silly. my first one is most important. I tried googling it... a lot. but I can't really find any clear answers.