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Simple Metal Detector : 8 Steps (with Pictures) - Instructables
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Simple Metal Detector Circuit
3 Ways to Build a Metal Detector - wikiHow
DIY Metal Detector Circuit
How To Make Metal Detector at Home - Skeleton PCB and easy | Metal detector, Detector, How to make metal
Build Your Own Metal Detector with an Arduino - Projects
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A Smart DIY Metal Detector | Hackaday
Simple Metal Detector using CA3140 IC
DIY Metal Detector Kit
Homemade Metal Detector
Search for coins and jewelry with this DIY metal detector | Arduino Blog