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Ships within 48 hours · Estimated delivery Sep 5 - Sep 10
Support ISO14443A multi-layer applications
steady and reliable
UART Baudrate Support 300 ~ 4608000 bps ˈDefault 115200 bps
Pull Test >= 1
Membrane 4X4 Matrix Keypad + Extras 2X5P Support ISO14443A multi-layer applicationsThis Matrix Keypad 4 X 4 has 16 buttons, arranged in a telephone line 3x4 grid with a column of 4 characters (A, B, C, and D). The keys are connected into a matrix, hence only 8 microcontroller pins (4 columns and 4 rows) are required to scan the pad. It's made of a thin, flexible membrane material with an adhesive backing (just remove the paper) so you can attach it to nearly anything. The keys are connected into a matrix, so you only need 8
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