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June 15, 2017
News - Enginursday: Pressing Our…
about 7 years ago
The voltage divider is a cool trick! I'll have to remember that one.
When you have enough digital pins available for each row and column (4+4, so 8 in this case), I found it really easy to create keypads that work with the Arduino Keypad library for detecting key presses.
No public wish lists :(