4x4 Key Pad by Liamthe1st

This sketch is missing a short description
Use serial monitor to check your input four rows and four columns 123A 456B 789C *0#D

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<iframe style="height: 510px; width: 100%; margin: 10px 0 10px;" allowTransparency="true" src="https://codebender.cc/embed/sketch:35032" frameborder="0"></iframe>

Embed The Serial Monitor

You can also embed the Serial Monitor section! Just use this HTML code.

<iframe style="height: 510px; width: 100%; margin: 10px 0 10px;" allowTransparency="true" src="https://codebender.cc/embed/serialmonitor" frameborder="0"></iframe>