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Topic: Problems to print the analog value on LCD (Read 435 times) previous topic - next topic


Hi guys,

someone know what there is of wrong in this code?
The number printed on terminal is different from the number printed on LCD!
Also, if I connect A11 pin to GND, on LCD I've a low random number.
If the same pin is floating, on LCD I obtain numbers that can reach also 9000 while on terminal the value is totally different.

If I connect the A11 pin to 3.3V the LCD shows the right number and also on the terminal I can see the same number (1023).
Someone can help me?

Code: [Select]

#include <LiquidCrystal.h>

LiquidCrystal lcd(25, 30, 37, 38, 39, 40);

void setup() {
  while (!Serial)  { ; }
  //- begin the lcd
  lcd.begin(16, 2);

void loop()
int16_t AD;


AD = analogRead(A11);




I found the problem...
before to print the value, I need to clear the old value prined on LCD with lcd.print("0000");

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