Display working but the text doesnt appear.

Hello all! So I’ve been trying to make lcd work for 2 days so i thought you might help me .
I’ve got a lcd 1602 with blue blacklight, a resistor of 220 ohms and a 10k stereo potentiometer.
And i was watching this https://www.arduino.cc/en/Tutorial/LiquidCrystalDisplay tutorial and the pins were soldered on the lcd. It’s my second time soldering please dont judge ;D :smiley:
Code:#include <LiquidCrystal.h>

const int rs = 12, en = 11, d4 = 5, d5 = 4, d6 = 3, d7 = 2;
LiquidCrystal lcd(rs, en, d4, d5, d6, d7);

void setup() {
// set up the LCD’s number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print(“hello, world!”);
}

void loop() {
// Turn off the display:
lcd.noDisplay();
delay(500);
// Turn on the display:
lcd.display();
delay(500);
}

I strongly advice to check your wiring, especially that of pins 1,2 and 3 of the 1602. From the pictures it seems that on the 1602 pins 2 and 3 have a lot of solder on it (do the solder blobs touch --> short circuit) Pin3 on the 1602 (connected with the wiper of the pot meter) governs contrast between text and background.
Furthermore the wires have become very hot during soldering because the plastic has melted. You'd better cut off the Dupont pins and soldered the bare copper wire stumps to the 1602.

Thanks for the reply! I will come back with an update.