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You are here: Home / Replies / Black boxes on the first row

Black boxes on the first row

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Microcontroller › 8051 › black boxes on 16×2 LCD › Black boxes on the first row

November 11, 2012 at 5:48 am #8734
AJISH ALFRED
Participant

Black boxes on the first row means “LCD not initialized”. Only after proper initialization an LCD can display characters.

Problem could be either hardware or software. First check your circuit connections and then your code.

If possible post your connection diagram here.

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