Build your own auto-ranging Ohmmeter! (with Arduino)

This video tutorial demonstrates how to build a resistance meter using an Arduino, precision resistors, a multiplexer, and an OLED display. The project can measure resistance from zero ohms to one giga ohm with high accuracy. The tutorial includes a step-by-step guide to building the circuit, testing it against a commercial multimeter, and an explanation of the underlying theory, including Ohm's Law and voltage dividers. The video also highlights the importance of selecting appropriate reference resistors to minimize measurement error.

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