Weird symbols on lcd when anything is in loop.

Other Hardware Displays
1

Hi, I'm working on a project that automatically waters a plant. In the loop function of my sketch the lcd replaces my normal text with odd special characters. However the text in setup is normal. I believe to have narrowed it down to the program because the "hello world" example works just fine.

Here is my sketch:

#include <Wire.h>
#include <TimeLib.h>
#include <DS1307RTC.h>
#include <LiquidCrystal.h>


const byte d7=1;
const byte d6=2;
const byte d5=3;
const byte d4=4;
const byte en=5;
const byte rs=6;
const byte pump=7;
const byte soilMoisture=A0;
const byte waterLevel=A1;
const byte button=A2;
const int pumpTime=4000;
//const unsigned long timeGap=900000;
const unsigned long timeGap=10000;
unsigned long previousTime=0;

LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

byte miniTwo[8] = {
  B00000,
  B00000,
  B01110,
  B00010,
  B01110,
  B01000,
  B01110,
};

byte timer[8] = {
  B01110,
  B00100,
  B01110,
  B10101,
  B10111,
  B10001,
  B01110,
};

byte moon[8] = {
  B00000,
  B01110,
  B11101,
  B11000,
  B11101,
  B01110,
  B00000,
};

void setup() {
  
pinMode(button, INPUT);
pinMode(pump, OUTPUT);
pinMode(waterLevel, INPUT);
pinMode(soilMoisture, INPUT);

lcd.createChar(0, miniTwo);
lcd.createChar(1, timer);
lcd.createChar(2, moon);
lcd.begin(16,2);
lcd.setCursor(0,0);
lcd.print("H");
lcd.write(byte(0));
lcd.print("O: ");
lcd.setCursor(8,0);
lcd.write(byte(1));
lcd.print(": ");
lcd.setCursor(0,1);
lcd.print("Stan:");


Serial.begin(9600);
}
     
     tmElements_t tm;
     
void loop() {

  unsigned long currentTime=millis();
//obsługa automatyczna
if(currentTime-previousTime>=timeGap && analogRead(waterLevel)>500 && analogRead(soilMoisture)>429 && RTC.read(tm) && 21>=tm.Hour && tm.Hour>=9){
      digitalWrite(pump, HIGH);
      delay(pumpTime);
      digitalWrite(pump, LOW);
      previousTime=currentTime;
      }
//obsługa guzika
    if(analogRead(button)>1020 && analogRead(waterLevel)>500 && analogRead(soilMoisture)>429 && RTC.read(tm) && 21>tm.Hour && tm.Hour>9){
      digitalWrite(pump, HIGH);
      delay(pumpTime);
      digitalWrite(pump, LOW);
      }
//the problem
lcd.setCursor(5,0);
lcd.print(analogRead(soilMoisture));

}

Any help would be grealty appreciated. Thanks!

2

Your are sending information to your LCD every time you go around the loop. I don't think that was your intent.

Don

3

Don't use Pin 1 (and Pin 0) for your LCD. These pins are used by Serial.

/ffur