Please Help! multiple DS18B20 sensors ,I2C LCD 20x4

hello !

im trying use 4 ds18b20 sensors 20x4 i2c lcd , if i'll add more 2 sensors doesn't display third , fourth sensor . tried same sketch using serial monitor , works fine
i'm lost because i'm not sure if if that's hardware or software problem.
any appreciated!

here's code

code: [select]

#include <onewire.h>
#include <dallastemperature.h>
#include <liquidcrystal_i2c.h>
#include <wire.h>

#define one_wire_bus 10
liquidcrystal_i2c lcd(0x27,20,4);
onewire onewire(one_wire_bus);
dallastemperature sensors(&onewire);

void setup() {
  lcd.init();                      // initialize lcd
  lcd.backlight();
 
  sensors.begin();
 
}

void loop() {
 
  sensors.requesttemperatures();
  lcd.setcursor(0, 0);
  lcd.print("sensor 1:");
  lcd.print(sensors.gettempcbyindex(0));
  lcd.print((char)223);
  lcd.print("c");
  lcd.setcursor(0, 1);
  lcd.print("sensor 2:");
  lcd.print(sensors.gettempcbyindex(1));
  lcd.print((char)223);
  lcd.print("c");
  lcd.setcursor(0, 2);
  lcd.print("sensor 3 :");
  lcd.print(sensors.gettempcbyindex(1));
  lcd.print((char)223);
  lcd.print("c");
  lcd.setcursor(0, 3);
  lcd.print("sensor 4 :");
  lcd.print(sensors.gettempcbyindex(1));
  lcd.print((char)223);
  lcd.print("c");

}


is there reason have

lcd.print(sensors.gettempcbyindex(0))

lcd.print(sensors.gettempcbyindex(1))

for first 2 lines then

lcd.print(sensors.gettempcbyindex(1))

 and

lcd.print(sensors.gettempcbyindex(1))

for third , fourth lines?  ie, same line two.

maybe meant ....index(2). , .....index(3).

weedpharma

Arduino Forum > Using Arduino > Sensors > Please Help! multiple DS18B20 sensors ,I2C LCD 20x4

arduino