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Topic: LCD display not displaying text (Read 457 times) previous topic - next topic

piplikoc

Hello!
I just started to setting up my LCD display, but I have a problem.

This is my code.
Code: [Select]
#include <LiquidCrystal.h>
LiquidCrystal lcd(12, 11, 5, 4, 3, 2);
void setup()
{lcd.begin(16, 2);
  lcd.clear();}
void loop()
{lcd.print("Printing text");
  delay(3000);
  lcd.clear();}


I soldered every single small metal piece to the board. Maybe I made a mistake?
I watched a lot of tutorials and pages, but I didn't find a solution.
My LCD display is from Ali-express. My Arduino is a Arduino Uno Rev3, but maybe a clone.

https://photos.app.goo.gl/V5izie9p2ALytAdW6 There a few photos, this was too much for the site.

floresta

. . .

I soldered every single small metal piece to the board. Maybe I made a mistake?
I watched a lot of tutorials and pages, but I didn't find a solution.
. . .

You definitely need to get some help with your soldering.  You could start with this Adafruit guide.

Don

pert

@piplikoc's IMG_20190924_203650.jpg:



I very much recommend against trying to use that LCD module until you have fixed all the solder joints. You have bridged some of the pins together with solder blobs and it's possible this could result in damage to the LCD or Arduino (it may have already done so).

piplikoc

#3
Sep 25, 2019, 07:09 pm Last Edit: Sep 25, 2019, 08:21 pm by piplikoc
I only soldered 3 pins together, which are D1, and D0 and the E, because I thought I will only use the E, because I only use the D7-D4.

Paul__B

We can only repeat pert's advice.

Get help with soldering from someone with the skill.  Until it is connected properly, there is no point whatsoever in attempting to operate it.  :smiley-eek:

It is probably not damaged, but foolish to proceed in this state.

david_prentice

Learning how to solder is a useful skill.
Either ask a neighbour for help or study videos on the Internet.

Many Ebay modules come with ready-soldered header pins.   Make sure that you check the photos before buying.

LCD modules with I2C backpacks are normally soldered.
Regular non-I2C LCD modules are not soldered.

David.

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