PIN 3 on the LCD is for contrast. Hook a pot up as a voltage divider with the wiper going to display pin #3. Then adjust until the black boxes go away. Then try sending "HELLO WORLD" to the display.LCD only shows a bunch of black box
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PIN 3 on the LCD is for contrast. Hook a pot up as a voltage divider with the wiper going to display pin #3. Then adjust until the black boxes go away. Then try sending "HELLO WORLD" to the display.LCD only shows a bunch of black box
Dave
Always wear safety glasses while programming.
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