Discover a step-by-step guide to building your own DIY external microphone for smartphones using old earbuds and a drinking ...
Discover how to build your own DIY laser pointer that connects to your smartphone's headphone jack and is controlled via an ...
Have you ever imagined building a drone so small it could rest comfortably in the palm of your hand, yet powerful enough to soar through the air with precision, all controlled from your smartphone?
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