The Planted Tank Forum - View Single Post - DIY PAR meter, Yeah you heard me
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Old 02-05-2013, 02:27 PM   #481
mistergreen
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Quote:
Originally Posted by dzaninov View Post
Construction and testing of an inexpensive PAR sensor:
http://citeseerx.ist.psu.edu/viewdoc...=rep1&type=pdf
yup, that's where this project started, or something similar.

Hey, I built 6 sensors over the past weekend. I'll calibrate them this weekend.
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