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by wdegroot
Mon Sep 01, 2003 11:39 am
Forum: General Discussion
Topic: photo - electronics project
Replies: 1
Views: 974

photo - electronics project

I am getting back into b&w photography in the april 1974 issue or popular electronics , there was an article by Joseph giannelli " auto photo enlarger controller" using a FET and a '555 and a photo resistor, it controls a photo enblarger to give automatic exposure. I built one back then and i believ...