Kerypad 3x4 Membrane

[last updated: 2018-09-21]
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The 3x4 membrane keypad is a component I got from Adafruit (PID: 419). I will be using it for an interface to a home security/alarm system.

Adafruit PID: 419

cable pin#'s

matrix to cable pins

Current sketch - see: programs-all
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Used in i2C_keypad project
Used in door alarm panel project

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