light meter

Hello all, I'm doing some market research. I have an idea for a product that measures light output over area. By moving the product under your grow light setup, it will feed back data to your computer to give you a picture of power density over area. Ideally it will display units in...

going with a cob diy build frim what i seen 16" from canopy to light seems good but i def want some numbers/data to back it amd tips would be great

Hey, Y'all. If this has already been covered please just let me know, but I have been searching and haven't found any threads that really cover this. I want to get some suggestions for a good quantum meter. I have come to realize that measuring PPFD is going to be vital to tuning in my grow and...