Hello everyone , I am still very new to arduino and this forum and wanted to ask a question regarding tinkercad, I am running a traffic light simulation and was wondering why although the lights work, the lcd would not come on, am i doing something wrong that i do not know? no errors but lcd is just being passed.
What a mess. Make your wires parallel, different colors, and cross at right angles. Also, when posting code, use the < CODE > button in the message box to start a code block, then paste your code where you see ```type or paste code here```
yes i know its a mess haha, not a perfectionist just want to get the job done first before making it pretty, but my main concern is the coding not the presentation of the circuit.
``
//
#include <LiquidCrystal_I2C.h>
#include <Wire.h>
LiquidCrystal_I2C lcd_1(0x22,16,2);
void setup()
{
lcd_1.begin(16, 2);
pinMode(13, OUTPUT);
pinMode(12, OUTPUT);
pinMode(11, OUTPUT);
lcd_1.setCursor(0, 1);
lcd_1.setBacklight(1);
lcd_1.display();
}
void loop()
{
LiquidCrystal_I2C lcd_1(0x22,16,2);
lcd_1.setCursor(0, 1);
digitalWrite(13, HIGH);
lcd_1.clear();
lcd_1.print("GO");
delay(5000); // Wait for 5000 millisecond(s)
digitalWrite(13, LOW);
lcd_1.clear();
lcd_1.print("SLOW DOWN");
digitalWrite(12, HIGH);
delay(2000); // Wait for 2000 millisecond(s)
digitalWrite(12, LOW);
lcd_1.clear();
lcd_1.print("STOP");
digitalWrite(11, HIGH);
delay(7000); // Wait for 7000 millisecond(s)
digitalWrite(11, LOW);
}[quote="xfpd, post:2, topic:1312508, full:true"]
What a mess. Make your wires parallel, different colors, and cross at right angles. Also, when posting code, use the < CODE > button in the message box to start a code block, then paste your code where you see ```type or paste code here```
[/quote]
heres the code btw 
Hi, @2kenny4u
Welcome to the forum.
The link will tell you how to post your code so it is in a scrolling window.
Thanks.. Tom.. 
1 Like
The point is not to make it look pretty, but to make it understandable. Do you understand?
How can we review your "schema" if it is almost illegible?
1 Like
And how can we read your code when it is all piled up like plain text?
Use the <CODE/> tool in the message composition window tool bar and paste your code where it says.
But this
void loop()
{
LiquidCrystal_I2C lcd_1(0x22,16,2); // lose this. What it does needs doing once, you did it aready
At least. More if you post code we can read. Easily.
a7
1 Like
Hey, kenny... clean up the code posting, too. Put three back-ticks (on the "tilde" key) before your code and after your code, like this...
```
// paste code here
```
You should verify your LCD address. I believe it is 0x27.... but I could be wrong, and your LCD address could be 0x22.
You shouldn't re-declare lcd_1 every loop. The global declaration should work.
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