How to interface keypad with arduino
In this video, we will see how to use 4x4 keypad with Arduino and at last we will make a simple project in which we enter a password from the keypad and an led will be turned on if the password is matched.
we will use a 4X4 keypad.It has 4 rows and 4 column.when we press a button, it will short one of the row outputs to one of the column outputs. From this information, the Arduino can determine which button was pressed.
Link to download the keypad library:
https://github.com/Chris--A/Keypad
Link to download the code:
https://goo.gl/eXv5is
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