jaimealmeida

Instructables

• 

  Portable Metal Detector

  39 12K
• 

  Light Detector

  16 2.0K
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  Simple Continuity Tester

  10 1.1K
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  Cell Phone Charger From an Old 9V Battery

  116 57K
• 

  How to Make One Flashlight From an Old 9V Battery

  20 1.5K
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  Small Test Bench

  14 1.3K