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# A Seven Segment Counter

## Description
In this project, I reused an old "seven segment display" salvaged from a microwave oven to build a counter. The project is based on an Arduino Nano.
[](images/breadboard_large.jpg)
## How it works
The salvaged display is a made of four digits that can be individually selected by its cathode pin. Each segment is lit up by the corresponding anode pin. The display is in a common cathode arrangement.
After
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