Modified manual.md#18

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rudstre wants to merge 3 commits intojonnew:masterfrom

Commits on Aug 15, 2017

Modified manual. Lengthened section on photodiode circuit and created a section for photodiode construction.
Rudy Gelb-Bicknell
committed

Commits on Aug 16, 2017

Modified manual. Lengthened section on photodiode circuit and created a section for photodiode construction.
Rudy Gelb-Bicknell
committed
Modified manual. Lengthened section on photodiode circuit and created a section for photodiode construction.
Rudy Gelb-Bicknell
committed