Problem with LCD

Question

I'm working on this piano project. When I push a button one of the led light is suppose to turn on and a tone comes out of the piezo. The LCD screen is suppose to print out a sentence but I can't get it to work.

Here is a picture of the board ( everything works except the LCD) I think the problems lies in the power supply but I'm not sure. This is the first time I use a big breadboard. Image of the board

Here is my code:

#include <LiquidCrystal.h>
LiquidCrystal lcd(13,12,11,10,9,8);
int p1 = 1; 
int p2 = 2;
int p3 = 3;
int p4 = 4;
int C,D,E,F; 
int buzz = 5;
void setup()
{
 lcd.begin(16, 2);
 lcd.print("hello, world!");
 Serial.begin(9600);
 pinMode(p1,INPUT);
 pinMode(p2,INPUT);
 pinMode(p3,INPUT);
 pinMode(p4,INPUT);
}
void loop()
{
 lcd.setCursor(0, 1);
 lcd.print(millis() / 1000);
 C = digitalRead(p1);
 D = digitalRead(p2);
 E = digitalRead(p3);
 F = digitalRead(p4);
 if(C == 1){ 
 tone(buzz,523); 
 }else if(D == 1){
 tone(buzz,587); 
 }else if(E == 1){
 tone(buzz,659); 
 }else if(F == 1){
 tone(buzz,698); 
 }else{
 noTone(buzz); 
 } 
 delay(50); 
}

• Juraj: the power rails are separated in the middle of the breadboard. bridge them with jumper wires
• Jot: According to the picture, RS and E are connected to pin 8 and 9. According to your sketch, RS and E are connected to 13 and 12.
• Gerben: Did you set the contrast correctly (using the potentiometer)?

Answer 1

The LCD is not powered, there are 2 separated power rails... use a wire to connect both rails.

• Chase: Where do I put the wires?
• Rene Ramirez: You need to use a wire to connect the 2 rails. Right where is the bigger separation.

Answer 2

the power rails are separated in the middle of the breadboard. bridge them with jumper wires

enter image description here