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Originally Posted by WM6
The best of the best sell dr. Best only to Army and is not for civil use:
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Ok,
I will build the free project schematic with phototransistors changed to IR sensors.
The project also has two sensors with chemical treated lenses. So maybe it is detecting the same as the military version.
I also made another experiment.... I discover I can locate a gold ring at more than 10m without using laser or photosensor electronics.
Plain eyes can locate the gold ring at this distance.
Best wishes,
J_P