The Planted Tank Forum - View Single Post - Convert Lux meter to PAR meter?
View Single Post
Old 06-21-2012, 02:14 AM   #40
Planted Tank Guru
Hoppy's Avatar
PTrader: (79/100%)
Join Date: Dec 2005
Location: Sacramento, CA
Posts: 19,534

The photo diode, beside a penny. Just barely big enough for me to solder the lead wires to it. This is the same one Mistergreen used in his pioneering PAR meter build,
Hoppy is offline   Reply With Quote