Design & Build a 6½ Digit Millivolt Meter – Part 3

In Part 3 of this project I cover Improvements to the input protection. We also add two new features which include storage of calibration setting in EEPROM for automatic calibration at switch-on. The other new feature is an additional button to allow user to set number of displayed decimal place.

Below is the link to download the new software version for this project:

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