Hi all I have an Arduino UNO I am making a home alarm system(after a spate of burglaries in our street) have built an analog 4x3 keypad which uses just 1 pin. It works fine although my programming leaves a lot to be desired. The keypad returns these values 1=58, 2=96,,3=145, 4=228 ,5=335, 6=447,7=59…

Single pin Analog 4x3 Keypad Password help please

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