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sa_leinad
sa_leinad
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I hooked up a 16x2 arduinoArduino compatible LCD yesterday and made sure all the connections were according to the program and the schematics provided all over the web. My contrast is adjusted perfectly but the problem is that there are black boxes on the top line while the lower one is empty.

Black boxes on top row only of LCD

I know this question has been asked many times but no one has answered the question other than saying, "Check your contrast pin". I'm using the default sample code provided in the arduinoArduino IDE. HELP!

Regards.

I hooked up a 16x2 arduino compatible LCD yesterday and made sure all the connections were according to the program and the schematics provided all over the web. My contrast is adjusted perfectly but the problem is that there are black boxes on the top line while the lower one is empty.

I know this question has been asked many times but no one has answered the question other than saying, "Check your contrast pin". I'm using the default sample code provided in the arduino IDE. HELP!

Regards.

I hooked up a 16x2 Arduino compatible LCD yesterday and made sure all the connections were according to the program and the schematics provided all over the web. My contrast is adjusted perfectly but the problem is that there are black boxes on the top line while the lower one is empty.

Black boxes on top row only of LCD

I know this question has been asked many times but no one has answered the question other than saying, "Check your contrast pin". I'm using the default sample code provided in the Arduino IDE. HELP!

Regards.

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Owais
Owais
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Arduino 16x2 LCD Black Boxes

I hooked up a 16x2 arduino compatible LCD yesterday and made sure all the connections were according to the program and the schematics provided all over the web. My contrast is adjusted perfectly but the problem is that there are black boxes on the top line while the lower one is empty.

I know this question has been asked many times but no one has answered the question other than saying, "Check your contrast pin". I'm using the default sample code provided in the arduino IDE. HELP!

Regards.