Arduino Library for the charlieplexed 8x7 LED Array. To use the LED array with any ATmega 168 or 328-based Arduino, see the SparkFun LED Array (8x7) Hookup Guide. A version of the LED array (called ...
If you want to build a button array, follow this diagram. The main idea here is to connect each button to a diode in a row by column fashion, and read all the rows column by column. Rows works as ...
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