LCD screen goes blank no light after the program is loaded

Speleocaver · January 25, 2018, 7:22pm

My Screen goes out after the program is loaded.
I am sure it is a syntax problem or something but I cant find it.
Would someone try this on your uno board and see if it gives the same result?
Does anyone see what I have done wrong? I am using a shield LCD that works fine until I get to this point.

The Program

#include <LiquidCrystal.h>
LiquidCrystal
lcd(8, 9, 4, 5,6, 7);

int h = 17; //Here h= is the hours for the time of day it could be 1-24//
int m =0; //here m= is the minutes for the time of day it could be 1-59//
int s=0; // here s= is the seconds for the time of day usually left at 0//

int hao = 17; //Here h = is the hours for the Light on it could be 1-24//
int mao = 0; //here m = is the minutes for the Light on it could be 1-59//

int haf = 17; //Here h = is the hours for the Light off it could be 1-24//
int maf = 1; //here m = is the minutes for the Light off it could be 1-59//

int hwateron= 17; //Here h= is the hours for the water Pump on it could be 1-24//
int mwateron=01;//here m= is the minutes for the water Pump on it could be 1-59//

int hwateroff= 17; //Here h= is the hours for the water Pump off it could be 1-24//
int mwateroff=02; //here m= is the minutes for the water Pump off it could be 1-59//

int hpumpon = 17; //Here h= is the hours for the water Pump on it could be 1-24//
int mpumpon =03; //here m= is the minutes for the water Pump on it could be 1-59//
int hpumpoff = 17; //Here h= is the hours for the water Pump off it could be 1-24//
int mpumpoff=04; //here m= is the minutes for the water Pump off it could be 1-59//

int hpumponn = 17; //Here h= is the hours for the water Pump on it could be 1-24//
int mpumponn =5; //here m= is the minutes for the water Pump on it could be 1-59//
int hpumpofff = 17; //Here h= is the hours for the water Pump off it could be 1-24//
int mpumpofff=6; //here m= is the minutes for the water Pump off it could be 1-59//

int hpumponnn= 17; //Here h= is the hours for the water Pump on it could be 1-24//
int mpumponnn=7; //here m= is the minutes for the water Pump on it could be 1-59//
int hpumpoffff= 17; //Here h= is the hours for the water Pump off it could be 1-24//
int mpumpoffff=8; //here m= is the minutes for the water Pump off it could be 1-59//

int hgasinjecton = 17; //Here h= is the hours for the CO2 Pump/Valve on it could be 1-24//
int mgasinjecton =9; //here m= is the minutes for the CO2 Pump/Valve on it could be 1-59//
int hgasinjectoff = 17; //Here h= is the hours for the CO2 Pump/Valve off it could be 1-24//
int mgasinjectoff =10; //here m= is the minutes for the CO2 Pump/Valve off it could be 1-59//

int hExtraon = 17; //Here h= is the hours for the CO2 Pump/Valve on it could be 1-24//
int mExtraon =11; //here m= is the minutes for the CO2 Pump/Valve on it could be 1-59//
int hExtraoff = 17; //Here h= is the hours for the CO2 Pump/Valve off it could be 1-24//
int mExtraoff =12; //here m= is the minutes for the CO2 Pump/Valve off it could be 1-59//
int fert = 17;

void setup()
{
pinMode(1,OUTPUT);
pinMode(2,OUTPUT);
pinMode(3,OUTPUT);
pinMode(10 ,OUTPUT);
pinMode(11,OUTPUT);
pinMode(12,OUTPUT);
pinMode(13,OUTPUT);
pinMode( A0 ,OUTPUT);
pinMode( A1 ,OUTPUT);
pinMode( A2 ,OUTPUT);
pinMode( A3 ,OUTPUT);
pinMode( A4 ,OUTPUT);
pinMode( A5 ,OUTPUT);
}

void loop()

{

if ((h == hwateron)and(m == mwateron)) digitalWrite(1, HIGH),digitalWrite(2,HIGH);
if ((h == hwateroff)and(m == mwateroff)) digitalWrite(1,LOW),digitalWrite(2,LOW);

if ((h == hpumpon)and(m == mpumpon)) digitalWrite(3, HIGH),digitalWrite(11,HIGH);
if ((h == hpumpoff)and(m == mpumpoff)) digitalWrite(3,LOW),digitalWrite(11,LOW);

if ((h == hpumponn)and(m == mpumponn)) digitalWrite( A0 , HIGH),digitalWrite( A1 ,HIGH);
if ((h == hpumpofff)and(m == mpumpofff)) digitalWrite( A0 ,LOW),digitalWrite( A1 ,LOW);

if ((h == hpumponnn)and(m == mpumponnn)) digitalWrite( A2 , HIGH),digitalWrite( A3 ,HIGH);
if ((h == hpumpoffff)and(m == mpumpoffff)) digitalWrite( A2 ,LOW),digitalWrite( A3 ,LOW);

if ((h == hgasinjecton)and(m == mgasinjecton)) digitalWrite( A4 , HIGH),digitalWrite(10,HIGH);
if ((h == hgasinjectoff)and(m == mgasinjectoff)) digitalWrite( A4 ,LOW),digitalWrite(10,LOW);

if ((h == hExtraon)and(m == mExtraon)) digitalWrite(11, HIGH),digitalWrite(12,HIGH);
if ((h == hExtraoff)and(m == mExtraoff)) digitalWrite(11,LOW),digitalWrite(12,LOW);

if ((h == hao)and(m == mao)) (digitalWrite( A5 , HIGH)), (digitalWrite( 13 ,HIGH));

if ((h == haf)and(m == maf)) (digitalWrite( A5 ,LOW)),(digitalWrite( 13 ,LOW));

lcd.begin(16, 2);
lcd.setCursor(0,1);
lcd.clear();
lcd.print(“TIME:”);
lcd.print(h);
lcd.print(":");
lcd.print(m);
lcd.print(":");
lcd.print(s);

}

aarg · January 25, 2018, 7:58pm

Look at how your code is displayed in the forum.

You didn’t use code tags to post your code. It’s important that you use them - if you don’t, the forum software sometimes interprets sequences of characters in the code as directives to format text in some way. It won’t display those sequences, and it will unexpectedly reformat the rest of the text. When that happens, and someone tries to copy your code and paste it into the IDE, it often throws an error, and readers will complain that the code fails to compile. Using code tags also makes it easier to read, and can be copied with a single mouse click.

Unless the sketch is too large, it’s better if you post your code, rather than attach it. When it’s attached, we have to download it, open it in a text editor, then copy it to the IDE. It’s much easier to just view the code in your post.

The code tags make the code look

like this

when posting source code files.
If you have already posted without using code tags, open your message and select “modify” from the pull down menu labelled, “More”, at the lower left corner of the message. Before posting the code, use Ctrl-T in the IDE to reformat the code in a standard format, which makes it easier for us to read. Highlight your code by selecting it (it turns blue), and then click on the “</>” icon at the upper left hand corner. Click on the “Save” button. Code tags can also be inserted manually in the forum text using the [code] and [/code] metatags.

When you are finished that, please read this post:

How to use this forum - please read.

knut_ny · January 25, 2018, 8:03pm

if ((h == hwateron)and(m == mwateron)) { digitalWrite(1, HIGH); digitalWrite(2,HIGH); }

// and so on..

Speleocaver · January 26, 2018, 12:54am