DIY Matrix Keypad 3*4/4*4 Keypad Array Module for Arduino/Raspberry Pi
ab 7,57 €
Keypad is a combination of row and column circuits. 1 x Matrix Switch Keyboard. There is a switch connecting each row and column. So the combinations of rows and columns makes up the 12 inputs. It provides numbers from 0 to 9, as well as standard stars ( ) and hash symbols.
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