Anyone have a good build for a PAR sensor?

7CardBud

Well-Known Member
I know the photodiode will be cheap, probaly the $5-10 range. I'm guessing most of the price of these sensors is in the band pass filter.
 

Boatguy

Well-Known Member
You can buy a name brand sensor and connect it to a multimeter. You will have to do the math but will have accurate measurements
 

7CardBud

Well-Known Member
You can buy a name brand sensor and connect it to a multimeter. You will have to do the math but will have accurate measurements
Got any links for a decent one to use in my greenhouse? The only sensor sales I've seen are for aquarium use and seem way overpriced.
 
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