i use 16f628a with pull-ups ..... for test
in circuit row and col have voltage around 0,5 to 3,5v (oscillating ... i don't know why)
than i press one button, 2 pins have 0,0v
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i use 16f628a with pull-ups ..... for test
in circuit row and col have voltage around 0,5 to 3,5v (oscillating ... i don't know why)
than i press one button, 2 pins have 0,0v
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