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Teaching notes, project walkthroughs, and hands-on electronics guides from Gary and the Mr Circuit team.

1 post Updated Jun 29, 2026
Educational bitmap showing a rotary potentiometer on a breadboard with a knob, three labeled pins, and an LED brightness control example
beginner electronicsWhat Is a Potentiometer? Simple Student Guide

Learn what a potentiometer is, what its three pins do, and how to explain adjustable voltage and resistance in a beginner circuit...

Jun 29, 2026· 4 min read