Questions tagged [lcd]

Short for Liquid Crystal Display. LCDs consume little power, and exist in graphic LCDs, or segmented. The latter type is used for character and 7-segment digit display, and also in custom LCDs for consumer electronics.

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Reading busy bit of 1602A lcd

I made a toy program on Arduino to write "Hello, World!" to the display using delays after every command. Now I was wondering if I could get rid of the delays if I read the busy bit. This is ...
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increase the maximum brightness for a laptop replacement screen [closed]

I would like to increment the maximum brightness for a laptop replacement screen such as this one How difficult that could be? I haven't bought the screen yet so any hint about the type / model and ...
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Connecting a 4 channels LVDS LCD (without EDID) to a 3 channels motherboard source [closed]

My plan is to fit a 1600x1200 20" 4:3 panel (LM201U05-SLA1) from a Dell Ultrasharp monitor (2007fPB) inside my 17" 1600x900 Asus (N71JQ) laptop (LP173WD1). From the datasheet I found the 17&...
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Is it possible to draw a border on row on 20x4 LCD?

I have 20x4 LCD, and I am using the LiquidCrystal_I2C library to communicate with the screen via Arduino. I want to build a menu with that screen, and I want to ...
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How to initialize a 16x2 I2C LCD in 4-bit mode with an STM32 MCU?

As part of an alarm clock project, I am trying to interface a 16x2 I2C LCD with an STM32F103RB microcontroller. The LCD uses an I2C backpack and only utilizes D7-D4 meaning 4-bit mode must be used. ...
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MSP430 LCD Interfacing via I2C

I am new at this. I am trying to interfacing 1602A LCD display with MSP430G2553 via PCF8574. When I run the code, nothing happens: ...
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Fixing MacBook Pro LCD Ribbon

So long story short, water got into the LCD TAB ribbon on the LCD screen and is causing a part of the screen to have problems. I've narrowed it down to see that there is corrosion (at least that's ...
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32 views

Identify LCD module connector type

I recently got a mini LCD module from Mouser (Newhaven Display Model #NHD-C160100DiZ-FSW-FBW, datasheet here. It came with a 14-pin ribbon-like connector that I've never seen before. Can anyone help ...
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Why are empty spaces on my 16x2 LCD screen displayed as striped lines

I am working on a circuit where I need to display some information on a 16x2 LCD screen. This is the first time that this has happened, but after I ran the code that I have written, the LCD displayed ...
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LCD Driver Questions [closed]

I recently disassembled some old Night Vision goggles (Jakks Pacific Night Vision goggles) and found a 420x234 LCD Panel inside connected to a 40 pin ribbon cable. Do you know of any drivers I could ...
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Can One hook up several displays on the same RGB parallel interface?

I am working with a 800*480 24-bit parallel RGB LCD display. The required clock for the RGB interface has to be between 23 and 27 MHz (typ. 25 MHz). For testing purposes, I need to display "...
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LCD backlight control

I want to connect K pin (or LED-) of LCD to the NPN transitor, so i can control it. The question is how can i calculate resistor value? I found this schematic online, do you think it would work? ...
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Why are graphic displays still so expensive? [closed]

As a new electronics enthusiast, I've been able to score a lot of components for very cheap, ranging from beefy MCUs in the 10$ ballpark to heaps of ICs for sub-dollar prices. However, buying a coffee-...
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Displaying bitmap on Arduino touchscreen TFT LCD

I'm having some problems displaying an image on my TFT screen, when called from within a custom class. I'm using the Adafruit pushColors method to push an array of ...
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Why shows the effect shown in the video below left-right asymmetry?

I made this video which shows what happens when I move the point of a wooden chopstick over my TFT-LCD screen, with firm pressure. It's remarkable that one can see that there is a difference between ...
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TFP401: 24-bit TFP401 to drive an 18-bit LCD panel, possible?

We would like to use this LCD panel as it matches customer dimensions perfectly: https://www.digikey.com/product-detail/en/sharp-microelectronics/LS037V7DW03A/425-2871-ND/4862435 This display has 6-...
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DPI interface for Raspberry pi including backlight driver

I am designing a DPI interface for my Raspberry Pi ZeroW. I believe the screen I have is exactly the same as the Pimoroni Hyperpixel 4.0 Square, just without the chunky interface PCB: https://shop....
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Why does this part of an OLED filter light only when orientated correctly?

Note: The screen is an OLED screen. I had assumed it was LCD, therefore the post mentions it as such. I was disassembling a Samsung phone (GT-I9305) and was able to seperate the LCD into two sections....
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How to implement an equation in assembly language using PIC18F and display its result on LCD?

I had a project that requires to measure illuminance(lux) using LDR and display the result on LCD. Thanks to some references from Google, I had managed to build a equation that shows relation between ...
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Is it possible to read calculator LCD values?

Hi all, I'm thinking about a project, but I have no idea if it's even possible... So the general idea would be to have a calculator that can display letters and other characters. I have a very basic ...
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Failed to display on LCD when interfacing with PIC18F4520 using ASM language

The LCD constantly shows nothing even though I built program sucessfully and found no error. I tried for many times in the past days but it doesn't work. I tried appling this code on PIC16F877 by ...
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LCD 16x2 Showing no text

I an trying to connect a 16x2 LCD text module with Arduino and it continuously shows only the green backlight. My code is correct and my connections are also correct. I tried the same project on ...
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Could I use a 2Ch 6bit LVDS cable on an LCD that uses 1Ch 6 bit LVDS?

this is my first question here so I'll try to make it as clear as possible. I've bought a T.V53.03 control board to use with an old laptop display I have at my home. After searching for the display ...
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How to connect generic smartphone LCD screen to take HDMI input from e.g. laptop?

For a certain project that has a specific screen size requirement, I want to use a phone-sized screen (6") to take HDMI from a laptop. Here is an example product: https://www.amazon.ca/Digitizer-...
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Can you get “raw” TFT display panels where you drive the gate and drain lines directly?

I am learning about different display types and how I might interface them with raw electronic components, e.g., TTL chips, op amps, function generators for scan line sawtooth, etc. CRT raster is ...
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Would an LCD monitor still work if both polarized films were rotated equally?

I am making a transparent computer monitor which can only be seen when using polarized glasses. Most commercial glasses are polarized vertically but the monitor that I'm working with seems to be ...
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In LCD technology what is the “duty cycle” of each pixel

I am trying to determine how much energy is transferred from an SLA printer pixel to the resin. One of the key things I am having trouble finding a good answer to is given a static image how long is ...
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How to power LCD backlight converter (from HP elite 8300)

I have 3 LCD screen form broken "all in one" pc (HP elite 8300) And would like to recycle them as normal monitor, but for that i have to power the screen backlight. It's 4 wire coming out from the ...
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LCD backlight inverters

I have two inverters, YEC YNV-01 and ASUS 08-20VL1011H. I don't know, how to power them. I saw this, but my ynv01 hasn't this pinout. it's pins 3 and 4 are connected together, and pins 5 and 6 are ...
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68 views

LCD screen: can this problem be caused by the inverter?

I'm repairing a HP 530 laptop with bad screen image. The image does not flicker, the corruption pattern is static. If I connect an external monitor through the VGA port the image is fine, therefore I ...
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Controller for HDMI to 30-pin display connector converter

I need to design a circuit for HDMI to a 30-pin eDP adapter. Do I need to use some high-speed microcontroller that takes the signal from HDMI or forwards it to the eDP connector or is there some chip ...
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Driving and dimming TFT LCD backlight

I have to add driving/dimming circuit to the design based on NHD-1.8-128160EF-SSXN-F display. The schematics suggested by the manufacturer is practically taken from MIC2289 datasheet (Figure 4-4). ...
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8051 to I2C backpack/4 bit LCD Byte Construct Probelms

Been feverishly writing bit bang code in assembly for this I2C backpack/4 bit LCD and dont quite understand the binary constructs I need to display text. Im trying to learn this the real way, not the ...
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Led white circles, spots etc

reference to internal leds What voltage is a 3-LED light from a LED-TV? As above the gentleman is asking for operational voltages etc, my question is (refer to my pic) The apparent white circles may ...
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BC457 transistor shuts down entire power on high signal

simulate this circuit – Schematic created using CircuitLab I'm making a microcontroller circuit to control a heater using an ATmega328, a 5 V relay, a 16x2 LCD display, a transistor etc. Now ...
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How to convert 8080 type 8 bit parallel interface to I2C interface?

I have a 8080 type 8-bit parallel interface LCD. Is it possible to convert it to I2C interface?
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Nokia5110 LCD user's manual

I am confused when searching for a user's manual for Nokia5110 LCD. I've found User manual ET LCD5110 with This has the same pins with different placement; therefore I don't know whether I have found ...
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LCD 4x20 display malfunction after ESD, Recover?

I have a device with 4x20 generic LCD display controlled by arm STR750 processor which is working well. According to IEC EN 61000-6-4 standart criteia B display of device should be recovered in a ...
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front and back LCD polarization film angles

I've taken apart an old dot matrix LCD because the polarized films are burnt. I removed the old ones and ordered a 10x10cm sheet (https://www.aliexpress.com/item/32804985320.html). I read that ...
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89 views

Connecting a parallel LCD using ST7789 with STM32H743VI

I have a STM32H743VI that I want to connect to a LCD display that uses ST7789 with parallel interface (8 or 16 bit), the LCD doesn't have the SPI signals so I have to use the parallel interface. I am ...
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What system would I need if I want to store large amounts of text data and be able to control a TFT LCD display? [closed]

My goal is to build an electronics project where I can store large amounts of text data (books) where I want to display that text on a TFT-LCD display. Right now, I have my display hooked up to an ...
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Boot problem with STM32 HAL, I2C HDD44780 and 1602 LCD

I'm using the following (relevant) combination: STM32F103C8T6 devboard (bluepill) 1602 LCD with I2C (HDD44780) STM32CubeIDE HAL Also I have a keypad and some other components attached, but these are ...
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LCD screen console cover

I'm trying to replicate this video game console and I would like to know what is this plastic that it's used as a LCD cover. It's an acrylic sheet, a plastic sheet a plexiglass sheet? It's very thin ...
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Does a passive LCD's screen have 1 pin to 1 segment?

I'm very green in electronic engineering. But I have a 1997 Yamaha AN1X synth with a custom LCD screen that is only half operating and was thinking of making a replacement from todays parts with some ...
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Suppressing Noise without Earthing

We have designed an HMI, which will contain a 10.1" TFT with PCAP touch panel. I am using an enclosed power supply to convert the 230V AC to 12V DC. Only DC positive and negative is connected to my ...
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What is wrong with this LCD backlight boost converter circuit

I have been working with a dev board with the LCD backlight circuit shown below. The boost converted used is the TPS61041. On page 18 of the datasheet, there is an example of the backlight circuit ...
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In LCD/LED displays, does the back light strobe or remain on?

In LCD/LED displays, like the ones used with computers or for watching TV channels. Does the back light strobe in sync with the refresh rate or does it remain on all the time?
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FFC 13 pin cable extension

I have this 13 pin FFC cable inside my Canon Typestar 5 thermal typewriter. It connects the LCD display to the main board. I'd like to pull the display outside the machine and for that I need an ...
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what kind (brand) of LCD display is this? it has no pins [duplicate]

I just gutted working new kitchen scale, and I have never seen a LCD display like this before. There are no pins just a black strip that goes on to the PCB. What brand of LCD is this?
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How do I configure the wires in the LVDS 30 pin cable?

I explain: I have a screen that I want to use as a monitor. I have purchased an LCD controller board and a LVDS cable I need someone to help me to rewire the LVDS cable. I have the input terminal pin ...

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