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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STM32 communicating with LCD module HY28B

I'm currently in trouble with displaying something on the HY28B LCD module . I configured my LCD module in 16bits mode by soldering the right short at the right place and I'm using an STM32 discovery ...
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1answer
53 views

Is Write/Read pin in LCD is need to changed every time? Or is it ok if we fixed it to write only?

We are using 16X2 LCD. In that we are only going to write to LCD we are not going to read anything from it. Is it ok if we put it as write pin ? or every time after writing do we need to change it as ...
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1answer
31 views

Resources for learning how TFT works and how to drive it at the glass level?

I just scavenged an TFT display from a digital picture frame. Using the number on the back of the panel, I was able to locate and download the data sheet. I read through the document hoping to ...
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0answers
18 views

Trying to print text on LCD display from Arduino trinket [migrated]

I'm trying to simply program an Arduino trinket to display some text on an LCD display. I'm basically trying to follow this, except connect it to a Trinket rather than an Arduino Uno. The background ...
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3answers
60 views

Why exactly do you need a LCD controller board to interface LCD to a microcontroller?

I've dealt with interfacing a very simple LCD display with a microcontroller, so I get the basic concepts. I'm trying to interface something a bit more involved. I'm a bit confused on why you would ...
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1answer
159 views

Can zebra strips (elastomeric connectors) be cut to size?

I have a handheld radio with an LCD display. Due to time and climate, the rubber in the elastomeric connector seems to have gone hard and as a result the LCD shows the usual signs of failure, letters ...
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1answer
136 views

Have Cell Phone Display Panel(s) been hacked to accept HDMI?

Cell Phone Displays are cheap and have high-resolution and touch sense, but use varied specialized inputs via ribbon cable. So, has the DIY community made any controllers to input HDMI? What about the ...
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1answer
64 views

How to measure the temperature of a fridge with arduino?

A want to make a system with arduino to measure the temperature of many fridges and send SMS if temperature is over limits. I am wondering how to measure digital temperature without putting wire ...
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1answer
42 views

Why do we need TN liquid crystal to switch on/off a pixel?

I have been reading this wikipedia page about LCDs where they explain that we use TN Liquid Crystal to switch off/on a pixel. That made sense. But when reading on IPS, they say they can control ...
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2answers
63 views

STM32 Built-in LCD Controller Interface?

I have a bit of a specific question here: I am the proud owner of an STM32L476 microcontroller. According to the datasheet (page 41), this specific MCU not only has a built-in LCD controller, but it ...
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1answer
62 views

How to rewire a LVDS Cable?

I have a samsung LTN154X3-L03 LCD screen from an old laptop. And I was trying to use it as a second display. I bought the t.vst59.031 lcd controler board. The problem is that this board doesn't come ...
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18 views

LCD interface and contrast adjustment scheme

I am referring below graphical LCD. But since it's datasheet is not thorough, I have few queries in interfacing. Interfacing: VDD,LEDA is 5V and VSS is Ground. How Vo,Vout connection is to ...
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1answer
36 views

TFT LCD and PC - How to connect? [closed]

Having this specification, what pins must be connected to a VGA, DVI or HDMI cable? Unfortunately i am totaly unexperienced and do not know what informations are essential for the Question. I have no ...
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0answers
45 views

How to correctly control contrast on a JHD202C LCD display

I have a JHD202C LCD display, for which the datasheet is available here. Please note that there are more than three pages in the PDF file, one must download it to see them. TL;DR: Which of the two ...
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0answers
62 views

12v 3amp device powered via 9amp molex output from psu - will device only draw amps required? [duplicate]

I have a problem with a 12v lcd controller not switching on, even though the red LED is indicating power. I'm connecting it via a "molex connector output" from a standard PC psu, although the molex ...
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1answer
38 views

Placing a bypass capacitor on an LCD w/built-in serial controller a good idea?

I'm trying to learn more about bypass capacitors and am wondering whether an LCD that I have should have a bypass capacitor or not. I have an LCD that uses a built-in controller, a PIC16F690 for ...
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2answers
43 views

ARM M4 based Microcontroller or Particle Photon drive multiple small colour lcds?

Hi I was just wondering if anyone had an example of running multiple small colour lcds from an arm based microcontroller or photon? I'm hoping to run up to 5 lcds with photos. Ideally if I could ...
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1answer
60 views

Mounting a LCD display to a PCB

I'm working on a project that involves this LCD for a PCB. From the drawing, I can easily tell how to connect the pins. But I am not sure how to tell from the drawing how the display should be ...
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4answers
208 views

Powering Arduino from a voltage divider

I'm making a voltmeter for the college senior project, and the problem is that voltage divider should equally split 17V into two 9V(nominal value of the batteries. As of now, an actual voltage is 8.5V ...
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1answer
83 views

Problem with lcd - pic interface

I wrote the following code to display a blinking text on an lcd. The code works properly on the simulator but the real lcd doesn't display anything. I attached the circuit diagram I used to connect ...
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0answers
51 views

SPI0 not working - SPI0 pins of Beaglebone black conflicting with the 4D 7.0" LCD CAPE pins

I have been working with BBB for a while using the 4D 4.3" LCD CAPE. The SPI0 worked well with the 4D 4.3"LCD CAPE, but later when I switched to the 4D 7.0" LCD CAPE, the SPI0 is not working and ...
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1answer
43 views

lcd “random fruit” built in function for pic

I'm trying to display a random fruit on an lcd and I was wondering if there's a built in function in the MikroC PRO for pic v.6.4.0 library that does so. I drew the fruit using the lcd custom ...
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1answer
58 views

LCD controller interface

I wanted to learn Interfacing a LCD with a LCD controller. Is there any guide or tutorial that I can learn from? I wanted learn interfacing LCDs like these( ...
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1answer
83 views

What are these wires for?

I have a Dell monitor I took apart to examine the LCD for a future project and it has these 4 wires coming out of the side of the LCD marked LRB. After examining the board that I removed the LCD from ...
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1answer
62 views

LCD Data Pins from different ports

I am using LPC1769 and it's port pins as below image. DB0 to DB15: Port pins of LPC1769 used as data pins for LCD Control Signals for LCD: C/D : Register Select Command or Data /WR : ...
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1answer
74 views

LCD Backlight voltage requirement

For LCD, I have to make back-light voltage provision. As per below image, LEDK1 to LEDK4 pins are internally grounded in LCD module itself. But I have to add series resistor to limit current. LED ...
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1answer
48 views

Power supply for a 3.3v portable device based on dsPIC33FJ128GP804

I have been building a portable device which has as its main components a dsPIC33FJ128GP804 and a graphical liquid crystal display, which is working fine. The PIC voltage range is specified at 3.0v ...
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1answer
58 views

Nokia 5110 backlight

I'm learning how to run a Nokia 5110 LCD (similar to this) using an atmega328p chip. I don't understand how the backlight works. If I power the LED/backlight from one of the chip pins, it turns on ...
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1answer
63 views

Backlight LED Boost Converter testing

I am using LCD EJ080NA TFT with LED back-light. LM3410 is used as backlight driver. Schematic as below: But when I am testing it on hardware, I tried without load and with load. Without load, ...
13
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2answers
1k views

How does 13 connections control a simple LCD with 34 segments?

Inside my digital scales I find a 7-segment style LCD capable of displaying "-88:8.8" plus 3 symbols indicating Kg, Lb or St. This adds up to 34 individual segments, assuming the colon is a single ...
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2answers
48 views

What is needed to create a HDMI output

I am experimenting with the arm cortex A8, it has a bunch of LCD outputs I first thought I could just convert LCD to a HDMI signal, but can't seem to find any thing of an use, any help would be ...
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1answer
29 views

Using a led driver as a led backlight inverter

Can i use a led driver to replace an led backlight inverter ? I have an old MacBook display (LG LP154WP2) and don't really know how to use the inverter board, because i can`t identify the ic on the ...
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1answer
126 views

Use LCD 1602A with F28027

I want to connect C2000 Piccolo LAUNCHXL-F28027 and LCD 1602A. And I already found this example: http://embedjournal.com/interfacing-16x2-character-lcd-with-c2000-launchpad/. I downloaded the source ...
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4answers
99 views

Is it necessary to use resistor when connecting backlight of 16x2 LCD display?

I wonder if it's necessary to use any resistor when you're connecting backlight of 16x2 LCD module? OR it depends on voltage? I am using Hitachi HD47780
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1answer
67 views

What defines LCD display constrast?

How is a general 16x2 LCD display contrast defined? Is it with voltage on pin V0 or with total resistance of potentiometer?
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1answer
73 views

What type of display is this?

I found this display in this cheap chinese handheld tetris. It doesn't have any connectors on itself and is just sitting on small PCB with some kind of gum between them. What kind of display is it and ...
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2answers
88 views

Powering a 6-Pin DAC-08B035 LCD Inverter

i have an old LCD Panel(N141X6 -L01) from a Fujitsu Siemens laptop and an inverter(DAC-08B035) for it. Before connecting the whole thing to a raspberry pi(and buying the necessary controller board), I ...
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2answers
162 views

Which method is better for liquid crystal overdriving?

Recently, I started to design a LC (Liquid Crystal) shutter glass. The question is which component should I use. This is the LC shutter I might use: PolarSpeed®-S However, there are a few more ...
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1answer
205 views

LCD data read and show on computer

I have a project to work as follow: this is a PIC based (PIC16C62B) porudct which measures value coming from mechanical gyro sensor. analog data from gyro amplified and sent to AD7707 to convert into ...
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0answers
93 views

Power requirement for LCD

I am using LCD with below power interface. But as per below note in LCD datasheet, VCC and VGL need to apply first and then VGH. My query is why such power sequencing is needed ? If I use below ...
25
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3answers
602 views

What is this unusual LCD controller technology?

Preface: Even if you do not have a definite answer, I would greatly like feedback from anyone who has even seen an LCD using this technology. I recently took apart a Canon digital camera from the ...
14
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2answers
2k views

How to drive 1080p with only 540 pins?

I was trying to hack a 3-D system starting from the monitor: VG248QE. I teared it down to LCD matrix and driver. This is a 1080p(1920 x 1080) monitor so I was expecting that at least 1080(row) + ...
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1answer
60 views

LCD Interfacing types

I am learning LCD interfacing and came across parallel, RGB, LVDS interface so far. I have worked on parallel 8/16 bit interface. But have few doubts in overall interfacing of LCD. Is RGB a ...
6
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1answer
309 views

LCD driver: What changes in 3-D mode?

Facts: We know that a system needs high data transfer speed if it works with +120 Hz refresh rate and +1080p resolution(This mostly requires DVI dual link). We know that in a 3-D system with ...
2
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0answers
213 views

LTDC data starvation during simultaneous SD-RAM and NOR Flash access with STM32F429 rev 3

Application details: SDRAM is used as the LCD frame buffer. Memory for 2 LCD frame buffers are allocated(double buffering) in SDRAM. LTDC will be always accessing one of the frame buffer in the ...
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2answers
108 views

Running Nokia 5110 with 3 pins

I recently received a Nokia 5110 LCD screen and have hooked it up to my Uno and got it displaying stuff. I'd like to try using it in a project with an ATtiny85 and found some resources to that ...
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1answer
195 views

Calculator with MSP430 in Assembly Language

I am programming a calculator in assembly language with the MSP430g2553. I have a 4x4 membrane keypad and an 2x16 LCD. I already can display numbers in the LCD with the keypad. The issue is that the ...
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1answer
77 views

NHD-0216HZ-FSW-FBW-33V3C Black Boxes in Line LCD Display

I installed a NHD-0216HZ-FSW-FBW-33V3C with an MSP430g2553. I tried to initialize it for 4-bit mode in assembly language but black boxes still shown and initialization is not completed I think. My ...
4
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1answer
144 views

How does color LCD work on the Pokémon Pikachu 2 GS?

The Pokémon Pikachu 2 GS is a small electronic toy that has an LCD screen. What's unusual is that the screen is not the typical black-and-white LCD found on almost all handheld devices, but instead it ...
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52 views

16x2 LCD Display Got Error Cause by External Current

As shown in the image above the 16x2 LCD display is controlled by Arduino. Relay and LCD both connected to +5V of Arduino The LCD got an erroneous symbols display whenever I pug/unplug the relay ...