How to Use a 5x4 20-Key Keypad with Arduino to Detect Strings
Using a keypad with keys containing more than one character is challenging. I have written code to remove the channel, and you will be able to readily read virtually any length key value in this video.
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How to use 5x4 20 keys keypad with Arduino detect String
How to use 5x4 20 keys keypad with Arduino detect String
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