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.

What components are used to build the resistance measurement project?

What is the maximum resistance that can be measured with the project?

Who is credited with building the project?

What is the purpose of the multiplexer in this project?

What is the significance of using precision resistors in the project?

How does the Arduino determine the unknown resistance?

What type of display is used to show the measured resistance value?

Explain the concept of Ohm's Law as it relates to this project.

Describe the process of measuring voltage at VX in the circuit.

What challenges might arise when selecting a reference resistor?