Arduino BCD Conversion Interfacing MAX7219 LED Display Controller

YouTube video for this project: Arduino BCD Conversion Interfacing MAX7219 LED Display Controller.

Download Arduino code for this project: arduino_max7219c.txt.

This is very similar to two related projects with Arduino and the MAX7219. In this case I demonstrate how to convert from an integer value to binary coded decimal. (BCD) This is done without the use of any micro-controller specific libraries for functions.

The first four digits on the display will count from 0000-9999.

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