4004 lcd problems

Other Hardware Displays
1

Sorry for the translation errors.

There is a 4004 screen, I cannot use the screen in one piece. It looks like 2 screens on Arduino, but it gets very confusing when you enter the codes. Does anyone have an idea, I've seen a few videos but they didn't work, thanks in advance.

For some reason the guy in the video is working, I couldn't figure it out.

20220923_230049
20220923_2300491920×1440 74.9 KB

https://www.youtube.com/watch?v=NCzIHrmNZo4

lcd datasheet

Thanks

2

What codes? Please post them in code tags. Also please post a wiring diagram.

3

Have a look at this thread: Dual HD44780 4 x 40 Library
Don

4

20220925_164607
20220925_1646071920×2560 174 KB

  • #include <LiquidCrystal.h>

  • #include <Wire.h>

  • #include <DHT.h>

  • #include <virtuabotixRTC.h> //

  • #define DHTPIN 13 //sıcaklık sensörü D13 pin araya 10k direnç (kahve siyah turuncu)

  • #define DHTTYPE DHT11

  • int CLK_PIN = 6;

  • int DAT_PIN = 7;

  • int RST_PIN = 8; /

  • virtuabotixRTC myRTC(CLK_PIN, DAT_PIN, RST_PIN);

  • LiquidCrystal lcd1(12, 10, 2, 3, 4, 5);

  • LiquidCrystal lcd2(12, 11, 2, 3, 4, 5);

  • DHT dht(DHTPIN, DHTTYPE);

  • void setup() {

  • lcd1.begin(20, 2);

  • lcd2.begin(20, 2);

  • lcd1.home();

  • lcd1.setCursor(0, 0);

  • lcd1.print("Warning :Do not accelerate the vehicle");

  • lcd1.setCursor(0, 1);

  • lcd1.print("when the engine is cold!!! The engine ");

  • lcd2.setCursor(0, 0);

  • lcd2.print("will be lubricated within 1 minute and ");

  • lcd2.setCursor(0, 1);

  • lcd2.print("will be ready to go. ///MPower ");

  • delay(3000);

  • lcd1.clear();

  • lcd2.clear();

  • dht.begin();

  • }

  • void loop() {

  • int temp = dht.readTemperature();

  • int hum = dht.readHumidity();

  • lcd1.setCursor(0, 0);

  • lcd1.print(" Information Display ");

  • lcd1.setCursor(0, 1);

  • lcd1.print("Vehicle Temperature : Clock:");

  • lcd1.setCursor(20, 1);

  • lcd1.print(temp);

  • lcd1.print("C");

  • lcd2.setCursor(0, 0);

  • lcd2.print("Engine Temperature:88 Date:");

  • lcd2.setCursor(0, 1);

  • lcd2.print("ABS:On ASC:Off PDC:On Hi-Fi:ON AUX:On");

  • myRTC.updateTime();

  • //Başlamadan önce ekranı temizliyoruz.

  • lcd2.setCursor(30, 0);

  • lcd2.print(myRTC.dayofmonth);

  • lcd2.print("/");

  • lcd2.print(myRTC.month);

  • lcd2.print("/");

  • lcd2.print(myRTC.year);

  • lcd1.setCursor(32, 1);

  • lcd1.print(myRTC.hours);

  • lcd1.print(":");

  • lcd1.print(myRTC.minutes);

  • lcd1.print(":");

  • lcd1.print(myRTC.seconds);

  • delay(1000);

  • }

5
  • #include <LiquidCrystal.h>
  • const int rs = 12, en1 = 11, en2 = 10, d4 = 2, d5 = 3, d6 = 4, d7 = 5;
  • LiquidCrystal lcd1(rs, en2, d4, d5, d6, d7);
  • LiquidCrystal lcd2(rs, en1, d4, d5, d6, d7);
  • void setup() {
  • lcd1.begin(40, 2);
  • lcd1.setCursor(0,0);
  • lcd1.print("Ekran 1");
  • lcd2.begin(40, 2);
  • lcd2.setCursor(0,0);
  • lcd2.print("Ekran 2");
  • }
  • void loop() {
  • }
6

Please read the forum guidelines to see how to properly post code and some information on making a good post.

Use the IDE autoformat tool (ctrl-t or Tools, Auto format) before posting code in code tags. Remove excess white space.

Please go back and fix your original posts.

7

the library no longer works

8

Please provide more information about the following parts of your post:

  1. "the library"
  2. "no longer works"

Don

1 Like
9

@ahmet93
you can try my LCD Library. It supports 40x4 character displays in 4bit mode as one display with 4 lines.
https://werner.rothschopf.net/microcontroller/202012_arduino_liquid_crystal_4004_en.htm

10

thanks guys

11

My problem is somewhat solved.
When I write from serial transfer, it does not exceed 3 lines.
Thanks again, BROTHER. :slight_smile:

#include <NoiascaLiquidCrystal.h>
#include <NoiascaHW/lcd_4bit.h>
const byte cols = 40;
const byte rows = 4;
const byte rs = 12;
const byte en = 10;
const byte en2 = 11;
const byte d4 = 2;
const byte d5 = 3;
const byte d6 = 4;
const byte d7 = 5;
const byte bl = 255;
const t_backlightPol blType = POSITIVE;
LiquidCrystal_4bit_4004 lcd(rs, en, en2, d4, d5, d6, d7, bl, POSITIVE, cols, rows);
#include <virtuabotixRTC.h>
int CLK_PIN = 6;
int DAT_PIN = 7;
int RST_PIN = 8;
virtuabotixRTC myRTC(CLK_PIN, DAT_PIN, RST_PIN);
void setup() {
Serial.begin(115200);
lcd.begin();
lcd.setCursor(0, 0);
lcd.print("Warning :Do not accelerate the vehicle");
lcd.setCursor(0, 1);
lcd.print("when the engine is cold!!! The engine ");
lcd.setCursor(0, 2);
lcd.print("will be lubricated within 1 minute and ");
lcd.setCursor(0, 3);
lcd.print("will be ready to go.");
delay(5000);
lcd.clear();
}
void loop() {
lcd.setCursor(0, 0);
lcd.print("Oil Pressure:2.3 Passing Time:");
lcd.setCursor(0, 1);
lcd.print("Vehicle Temp:28 Clock:");
lcd.setCursor(20, 1);
lcd.print("");
lcd.setCursor(0, 2);
lcd.print("Engine Temp:88 Date:");
lcd.setCursor(0, 3);
lcd.print("ABS:On ASC:Off PDC:On Hi-Fi:ON AUX:On");
myRTC.updateTime();
lcd.setCursor(36, 1);
lcd.print(myRTC.hours);
lcd.print(":");
lcd.print(myRTC.minutes);
lcd.setCursor(35, 2);
lcd.print(myRTC.dayofmonth);
lcd.print("/0");
lcd.print(myRTC.month);
lcd.setCursor(36, 0);
lcd.print(millis() / 60000);
lcd.setCursor(37, 0);
lcd.print(".");
lcd.setCursor(38, 0);
lcd.print(myRTC.seconds);
delay(1000);
}

12

I can't read your code. Please read in the forum how to - how to post code in code tags and correct your post accordingly.

Furthermore I can't see where you do any "serial transfer". Please explain what you expect and what you get instead.

Please check: Does the example "0420_4bit_4004.ino" from my library print in all 4 rows?

13

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