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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Details of TFT LCD wiring and driver board

I was curious about LCDs so I started looking them up. Our modern screens (as far as I understand) have a special light filter with many small red, green, and blue "stained glass windows" which make ...
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2answers
29 views

Unsual sizes of TFT, LCD or OLED panels?

On Stackoverflow there was a question about a round TFT display, but that answer was difficult and pricey. What is the possibility of finding rectangular LCD/TFT/OLED displays that are small in ...
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71 views

Why my TFT screen takes time to fill screen? [closed]

I am using WB-7 TFT LCD Module Rev2.2 in 8-bit mode with MCU dsPIC33EP512MU810 cloicking at 80 MHz. The LCD module is 7-inch 800x480 display with SSD1963 controller. I am totally new to using LCD ...
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0answers
12 views

interface arduino with lcd to work as oscolliscope [closed]

in my project ... l get a sin wave from arduino due and i want to connect it with tft lcd work as an oscollicope to show my signal. so i want to ask ..do i need a shield for arduino ? ... what do i ...
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1answer
40 views

What are the causes and solutions to battery-powered LCD backlight buzz/hum?

Many battery powered devices with LCD displays (eg: clocks or thermostats) will illuminate with a turquoise backlight when a button is pressed. Some of them will emit a buzzing/humming sound while the ...
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1answer
56 views

blood pressure and other electronics LCD display [closed]

Do blood pressures and other electronics like digital watches contains mercury on the backlight of their display (LCD) or somewhere else in order to display the numbers.. etc ?
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1answer
44 views

16X2 lcd not working with pic16f887

i have been trying to interface a 16x2 lcd with pic16f887 microcontroller using mikro c. The code complies successfully but i am not getting the expected result when load on the microcontroller. The ...
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1answer
65 views

LVDS 30 pin cable confusion [closed]

I'm trying to salvage a Samsung LTN154AT07 LCD from a laptop. I've ordered an MT6820-B rev.3 universal LVDS driver and a 5A step-down module (XL4005), and I think I have a decent grasp of how ...
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2answers
48 views

How does it work: smartphone pixels are turned off when heated

I saw this video: https://youtu.be/urbhA37a70c?t=1m45s In the video you will see that the pixels of a smartphone are turned off when heated. The pixels are turned back on again when they cool down. ...
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2answers
37 views

lcd display with black background under a semi reflective mirror?

I'd like to make a "magic mirror", something very similar to this https://blogs.windows.com/msedgedev/2016/05/31/magic-mirror-hosted-web-app/, but much smaller. Basically, I have a closed box (no ...
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3answers
123 views

Arduino 16x2 LCD weird symbols after relay-switch

I am using my arduino to automatically change water of my aquarium. The program runs fine, the pumps, heaters and valves are controlled by relays. When connected to my laptop, I can see via the serial ...
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2answers
49 views

Extend flat cable between LCD panel and driver board

Given a setup similar to this: https://www.adafruit.com/products/2395 The panel itself is nicely thin, but the driver board takes up some space. So I need to put it somewhere separate from the display....
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36 views

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
56 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
34 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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3answers
79 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 ...
2
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1answer
168 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 ...
0
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1answer
151 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
70 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
43 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
79 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
109 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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1answer
38 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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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
45 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
67 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
230 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
84 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
75 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
50 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
61 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( http://www.aliexpress.com/store/product/...
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1answer
85 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
67 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
78 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
49 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 ...
0
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1answer
66 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
114 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, ...
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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
57 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 ...
0
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1answer
33 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 ...
0
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1answer
142 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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votes
4answers
115 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
76 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
107 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
166 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 ...
0
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1answer
244 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 ...