After using the analog ESR meter I built, I soon discovered I needed a meter with just a bit more resolution to read the low ESR cap values (less than 1 ohm). Sure the analog meter worked flawlessly for troubleshooting BAD caps, but when testing caps for use in low ESR SMPS circuits, it left a lot to be desired.

So I set out to find a micro controller circuit driving an LCD and what I was able to find was either incomplete or way to complicated. So I decided to take Manfred Morninweg’s design that I modded for the analog meter and somehow use it with an Arduino.

This is part 1 of the Arduino ESR Shield I designed.

Part 2 can be seen here. Part 3 can be seen here. Part 4 can be seen here.

In this video I go over the background of the design, I then demo the operation and functions of the meter and go over future video segments I am doing to explain how it works and how to make one yourself.

Watch in HD!