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I currently do not have it with me.Please search for matrix keypad and use the logic for making the keypad.
The keypad logic
As long as you connect pinA5 of Arduino to ground(gnd) and disconnect the lights.
Here you go.I am extremely sorry that I didn't upload the program for I almost forgot about that and Enjoy.
Vote me for trash to treasure contest and if you have any ideas for my next instructables please comment below.
Check mine out....https://www.instructables.com/id/DIY-Headphonz/(I never knew yours until today but we have similar instructables)
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