problem with lcd 16*2


New member
I have the display lcd cfah1602b-ymi-jtk
black and orange
I have wired it following this outline
but I have not put the potenziometro from 100ohm if use the program of 4 tests to bit looks at instead all if I put to 8 bit from all strange characters like $
why ago therefore?
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CF Mark

Check your wiring, then check it again, then get someone else to check it for you.

99% of the time the problems are due to wiring faults.


New member
but the scheme is ok?
the problem is in the wiring?
but i controlled....
it some ok..
i re Check the wiring