mahmood Elnasser wrote:
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"Yes, you need to get the contrast of the LCD right, use variable resistor of 10k between VCC and GND, tweek it till the display gets darker and I think here where most problems are."
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I do already have a variable resistor of 10K between Vcc and GND to adjust the contrast. That works fine. But the first line is always darker than the second, and neither of the two shows anything.