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Friday, 6 February 2015

Porblem Solved Arduino LCD only showing black boxes

 Vee or Vo is the contrast pin of the Lcd by using this pin we can High or Low the Contrast of the Lcd Too Much high contrast can cause a black boxes and too much low contrast ca cause Blank Lcd.
you will need a minumumm of 5k resistor from Input Dc power (5V) to Vee Pin and a 470 or 940R from Vee to Ground OR use 5k potentio meter 


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