Simple Tutorial on interfacing 5×7 dot matrix display with AVR

Dot matrix displays are common display types in electronics. They are used where simple pseudo-graphics information need to be indicated.  Controlling dot matrix display is quite easy because it is nothing more than LED array. Anyway there are some points to keep in mind to make things easier.

In this project you will find out how to connect 5×7 dot matrix displays to AVR microcontroller and display information by scanning lines at some frequency – as you know these works dynamically to fool your eyes. Simple code snippet will give some starting point.

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