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208 Threads found on hd44780
Hi, I have a cu4002scpb-t63a VFD installed on a machine which is now broken.:sad: I want to replace this VFD with hd44780 LCD but the problem is this VFD uses i80 Parallel interface (D7-D0,/WR,/CS,BUSY) and hd44780 uses M68 intererface(D7-D0,RS,R/W,E). Is there anyway to replace this VFD with LCD??
Dear All, Just bought new oled display which has 6800 and 8080 parallel controller. This. And I'm trying to control it through mikroC Pro for pic LCD library. It is connected in 4 bit mode similarly than lcd display, but it seems to not work properly. I get mostly senseful ou
Guys, Can I use blue hd44780 16x2 LCD with 3.3V power supply ? Thanks
I'm fairly certain the RG2004 series utilizes a hd44780 compatible chipset, like the S6A0069. While I do not have RG2004A datasheet, I believe it is very similar to the attached GDM2004D datasheet. If correct, be aware the connector needs to be orientated at the top of the device and pin 1 is in the top left corner. I've also attached the
The following two videos shows an interfacing of LCD display(with hd44780 controller) with parallel port and serial port respectively. A two softwares are used for both interfacing which can be downloaded
Hello All, I'm currently building an interface to hd44780 LCD, and needs PWM to drive the backlight. For some electrical rules on PCB, i can only set PWM at P1A/RC5, but i'm unable to get it done, even with ISIS Proteus simulation, its outputs nothing. Here is the code for the PWM for lowest possible frequency, at 48MHz fosc: void Ini
I changed LCD library found on the internet from STM32F4 to STM32F3. Now it has not any errors but the LCD does not display any character. This is my code #include "stm32f30x.h" #include "hd44780.h" #include "stdlib.h" #include int main(void) { LCD_ConfigurePort(GPIOD,GPIO_Pin_7, GPIO_Pin_5, GPIO_Pin_6,0,0, 0, 0,GPIO_Pin_0
Hey I have been connecting an LCD to Arduino but I made a mistake: /* LiquidCrystal Library - Custom Characters Demonstrates how to add custom characters on an LCD display. The LiquidCrystal library works with all LCD displays that are compatible with the Hitachi hd44780 driver. There are many of them out there, and you can
Hello, bought PIC programer(mikroProg) from mikroElektronika and i have some problems with LCD could you help me out? Im using PIC16F628A and Hitachi hd44780 LCD. My code in C looks like this : sbit LCD_RS at RA0_bit; sbit LCD_EN at RA1_bit; sbit LCD_D4 at RB0_bit; sbit LCD_D5 at RB1_bit; sbit LCD_D6 at RB2_bit; sbit LCD_D7 at RB3
If you are utilizing either the Microchip XC8 or C18 compilers, both provide the XLCD library which supports either the 8-bit or 4-bit interface to hd44780 compatible LCDs. You can find the source code for the XLCD library in the: \sources or src\plib or pmc_common\XLCD Depending on the comp
Also, as I described to another poster earlier this week, you do not initialize the LCD anywhere. There is a specific initialization routine that must be run after powerup in order for the LCD to display anything at all. IIRC, that LCD is a common hd44780-based character display and you can find a link to it's init routine in the post I made a f
This is Multiple I2C LCD code. It is written using CCS C Compiler version 5.044. This si tested in Proteus and also EasyPIC v7 development board with 2 x 20x4 LCDs. LCDs should be hd44780 or compatible. I have used I2C LCDs and I2C LCD modules from Banggood. I will soon post mikroC PRO PIC and AVR versions of the code here. With this you can
Almost all displays with up to 20 characters and up to 4 lines use the same controller IC, the hd44780 or an equivalent from a different manufacturer. There is nothing in the specification that says what the display will show until the IC has been initialized so just powering it up is inconclusive. You really have to test it in a known working cir
If you are using a LCD display with a hd44780 controller from Hitachi, or some other compatible clone, you can program up to 8 characters into the CG RAM. To use these in your text, you just write the character codes '00' to '07' to the display. You will need to program the patterns when initiating the display. Each character use 8 bytes to make a
Hi, I am using hd44780 4x20 LCD to display some data.. I am using PC30f5011 controller and external oscillator configured as XT Oscillator with PLL4X... its not showing any data only Back light is switching On. External Oscillator tested its working fine.... Same code Configured as Internal Fast RC with PLL 16x LCD working fine. where i
I have ported this mikroBasic code to mikroC code but the data displayed is not proper. What is the problem with the code ? The author of the mikroBasic code has shown that the data is displayed properly on hardware LCD. I am testing in Proteus as I have not yet received my 40x4 LCD. I
Hello, I had one 4 line lcd display laying around and planned to use it on my PIC projects. Problem is that I don't have any datasheet and cant find it by google search. Tried it if it were hd44780 compatible and used the same pinout but nothing on display. I even tried to supply +5V on pin 2 from left, gnd on 1st and +5V on 3rd for contrast and
I think u should revise the timing requirement(Bus Timing Characteristics) in pages 49 & 52 here & compare them to the timing used in your code. Also u should revise timing needed during initialization in pages 45 & 46 (also LCD intial. here can be more explanatory here
I have got my 4x20 LCD working so I can write data to it but I cannot succesfully read the busy flag. This is a 3.3v PIC so I am using open drain outputs and 5v tollerant inputs. After scoping the Enable and D7 lines I can see the D7 level is low when it should be reading but my routine (lcd_status) always returns 1. I have been trying all manne
If I define a custom character that uses the lowest (8th) pixel row also, this row is never displayed, although the hd44780 datasheet says this: The 8th line is the cursor position and its display is formed by a logical OR with the cursor. Maintain the 8th line data, corresponding to the cursor display position, at 0 as the curs