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.

learn more… | top users | synonyms

0
votes
1answer
39 views

Redoing the factory calibration of LCD panels?

Is it possible to rewrite factory calibration of LCD panels? I am not talking about buying a Spyder 4 or X-Rite calibration device and generating a software lookup table at the OS, or graphics card ...
2
votes
1answer
61 views

LCD connector repair [closed]

Does any one know if it is o.k to run a soldering iron over the connector with the fine black traces on in the photograph attached(or below I am new to pic posting :D)? I have an office kitted out ...
0
votes
4answers
69 views

Wiring up an LCD display with unknown controller

I found an old LCD in my pile of trunk. I would like to be able to use it. However, someone (possibly / probably me) sawed off the part of the PCB with the series code, so I can't know what the ...
1
vote
0answers
42 views

Controlling LCD with MSP430 via I2C backpack PCF8574

I'm at my wits end with this at the moment. I need to interface my MSP430G2553 with the PCF8574 I2C expander in order to drive an LCD display. So far I've had not much luck at all. There is very ...
2
votes
2answers
118 views

Issue of power line noise

I am laying out PCB for a stopwatch project that I made couple of months ago. I seem to have taken care of the only sensitive part i.e. crystal, since it is time measuring device. But I also see that ...
1
vote
1answer
71 views

Why do LCD Screens ripple through cameras?

I noticed that when taking pictures of an LCD screen (thank you, laziness to print), that while I look at the LCD screen through the cell phone camera, the screen has both 1) Ripples and 2) Moving ...
1
vote
0answers
52 views

LCD screen with a dark patch, hot, hissing and whole screen flickering: what is happening exactly?

I've just had a problem with an LCD monitor, but this question is not about solving this problem. Google did that. I want to know what is happening at the electronic and physical level. Google didn't ...
1
vote
0answers
56 views

Remote control of audio equipment over RS-232 with Arduino

These questions are following on from my previous question Reverse engineering old serial devices and cloning with Arduino about the monitoring of RS-232 traffic. I had some good success and now have ...
1
vote
0answers
60 views

Video streaming from image processor

The project I'm working on involves streaming video from an image sensor to an LCD, preferably as cheaply as possible. My question is: can I get an image processor/sensor SOC (a la ...
2
votes
1answer
77 views

Basic idea of color look up table

I'm driving an ILI9230 LCD 320*240 16bit interface, with a framebuffer of 250*200 and I want to drive it as 4bit. so I built a loook up color table like that: ...
1
vote
2answers
87 views

Getting an 8-bit LCD display interface to work

I have a LCD which this controller is used with: LCD Single Chip Driver. I am trying to get it to work with an 8-bit interface, but in my kit I can't find the three pins that are mentioned in the ...
1
vote
3answers
122 views

Weird output on 16X2 JHD162A LCD display

I am learning interfacing of Atmega 16a with 16X2 LCD. I have a written a header file for routines which will used frequently and every time I want to interface with LCD using Atmega 16a I use this ...
1
vote
1answer
49 views

how to turn backlight on for BC1202A LCD

Hopefully this question isn't too novicelike: I have an LCD (BC1202A) that I want to drive from a parallax propeller board. Spec data:link1 and link2 After hours of mucking around (mis-wiring, ...
2
votes
1answer
104 views

Weird problems with LCD (HD44780 compatible)

I've been trying to interface with a HD44780 compatible display (16x2) for quite a few hours now, but have run into some weird behavior problems which I can't solve. My setup: I'm using the LCD in ...
0
votes
2answers
68 views

Replacing a sound module's LCD/EL backlit display with a LCD/LED backlit display

I am attempting to upgrade my Kurzweil K1200 rack sound module's display with a LCD/LED display (it currently has an LCD/EL display). The reasons are numerous; but longer life, brighter display, and ...
2
votes
2answers
123 views

Displaying a custom character on 2x16 LCD

I have written a working LCD driver for a NHD‐0212WH‐ATGH‐JT and I would like to add the possibility to create your own custom characters. Through some research I understood that I need to write a ...
2
votes
2answers
123 views

How large is “one pixel” for S5 AMOLED display?

Referring to Samsung Galaxy S5 OLED Pixel structure in oled-display.net, in particular this image illustrates the S5 AMOLED pixels: To my understanding, the yellow rectangle should represent "one ...
0
votes
0answers
56 views

Power LCD backlight (external power source)

I cut off 2 pin connector and connected +5V power source to it but nothing happens. However screen displays everything but with no backlight. 2 months ago it started flickering and today I turned on ...
1
vote
1answer
86 views

What is the difference between TFT LCD interfaces?

I am looking at driving a small TFT and have found that the driver chip supports various interface methods, however I can't see why I would choose one over another. The options are: i80 SPI VSYNC ...
1
vote
2answers
89 views

Creating a “virtual” LED display

I have a small project and I would like to have an LED display, just for the sheer fun and look of it. However it would be too expensive for me to make (I would like to use RGB leds) and I would need ...
0
votes
2answers
59 views

Using HD44780 display without contrast potentiometer

I found tutorial about connecting HD44780 display to Raspberry Pi. In this tutorial there is no contrast potentiometer. Vo is connected to ground. Tutorial author says: In order to control the ...
2
votes
1answer
61 views

What's happening when an LCD is initialized?

It seems that the function set command is repeated multiple times, with differing delays. Why can't it be a single function set command with all the delays combined? What is characteristically special ...
-1
votes
1answer
73 views

bluetooth headset with LCD and memory

I was wondering if it is possible to create a bluetooth device which would have a LCD screen and some memory (1kb) for making and receiving calls. From my research ( and I am far from an EE, but ...
0
votes
0answers
40 views

How to interface SED 1335 F0A LCD controller to LPC 2148?

I'm trying to interface a 320x240 Text/Graphics LCD module to an ARM microcontroller-LPC 2148. The LCD controller is SED 1335 F0A by EPSON. The LPC 2148 is mounted on a Keil Evaluation Board-MCB 2140. ...
-1
votes
2answers
73 views

serial to parallel lcd converter

Im looking for some information on a serial to parallel lcd converter. Im trying to retro fit a 240x64 led lcd with a 8 bit paralell in a machine with serial pixilated data. I have been searching ...
0
votes
2answers
55 views

Need help finding datasheet for Mitsubishi Electric AA11SB6C-ADFD TFT

Searching datasheet for Mitsubishi Electric AA11SB6C-ADFD LCD display. This LCD is discontinued product, no information on official site. Already tried sites like datasheetarchive, alldatasheet. Still ...
1
vote
1answer
217 views

Arduino TC1602 no display but backlight

I am using an Arduino Uno and TC1602 LCD display to write from MCU to the module. I have checked the wire connection for a lot of times, but still only backlight no text. So I am wondering whether ...
2
votes
2answers
117 views

Program memory question (working dispite insufficient memory)

I am writing this program to a Microchip PIC. ...
2
votes
3answers
180 views

BJT switch vs amplifier mode

I'm getting really confused about a specific BJT circuit. I want to control LCD brightness and contrast as suggested here. Apprently a capacitor is used to filter PWM output to the contrast pin, ...
0
votes
1answer
154 views

LCD brightness and contrast control with PWM

Is it reasonable to control LCD brightness and contrast directly with the PWM pins of an Arduino, or would it be advisable to use a capacitor/filter to get a constant analog voltage? I assume human ...
0
votes
0answers
350 views

How to connect smartphone LCD to HDMI (how to make controller)

I need very small HDMI display. I saw HDMIPi - 9 inch is too big for me, if that display was 5-7 inch - it would be perfect for me. There are 7 inch HDMI displays for cameras, but they are big, ...
2
votes
1answer
98 views

Good idea to control LCD contrast using a microcontroller?

In a commercial product, would it be a good idea to control LCD contrast using a microcontroller? The LCD is to be installed in a vehicle and is to withstand temperature changes. I am concerned if ...
0
votes
1answer
58 views

What are types of connection between metallic conductors and glass part of an LCD?

I know that elastomeric connectors are being used to connect metallic conductors to the conductive paths on the glass part of an LCD but there must be other ways being commonly used. For example in ...
1
vote
3answers
312 views

Convert 3.3v to 14v?

I want to use a 4D Systems OLED display with an ATmega32u4 based PCB. I'm still working on designing the PCB and have hit a problem. In the data sheet it says that one of the power supply pins for the ...
0
votes
2answers
82 views

I2C Enabled LCD Unreliability

I'm trying to control an I2C Enabled LCD Display using the STM32F0. I have a bunch boards built with the LCDs and a couple of them work all the time, a few work intermittently and a few rarely work at ...
-1
votes
1answer
61 views

Displaying binary on LCD

Hi I am doing a home project to make a simple calculator. I plan on using a encoder for the number and arithmetic inputs and I want to display it on an LCD. I plan on having a 16:4 encoder where 0 to ...
0
votes
1answer
62 views

Identify Display Technology

Can somebody tell me what display technology this is? There're digits made out individual pixels and then there're glyphs. It is installed behind white plastic.
0
votes
1answer
62 views

Arduino LCD crashing / solid top line

I have recently acquired an Arduino and LCD display, I have been experimenting with it and I have made it work, and had it working for a few days on a few different sketches. This morning, I uploaded ...
1
vote
2answers
57 views

Extra pins on HD44780 lcd

I am looking at ordering this lcd https://www.sparkfun.com/products/255, however when looking at the picture it seems that there are some extra pins on the right side not described in the hd4470 ...
0
votes
1answer
160 views

Writing to FSMC is extremely slow

I have an ARM Cortex M3 STMF32F103VE http://www.st.com/st-web-ui/static/active/en/resource/technical/document/datasheet/CD00191185.pdf, and I'm using an LCD with ILI9320 controller ...
1
vote
1answer
442 views

OLED 128 x 32 SSD1306 display problem (picture inside)

I bought one of these cheap 0.91" OLED displays and hooked it up according to a datasheet that was sent to me by the seller. I tried several drivers for it after I thought there are compatibility ...
1
vote
1answer
61 views

Help with this protocol - LCTC

I have a 640x200 monochrome display from a HP 200LX palmtop computer. On its PCB I can see two types of ICs: HD66204TFL and HD66205TFL from Hitachi. Here is its schematic (it has 200 px not 240 as in ...
0
votes
1answer
66 views

How to Identify faulty bus pins on LCD?

I've soldered 14 pins on the back of my LCD and connected to an AVR Microcontroller. The LCD powers on correctly and contrast is set correctly but I'm having trouble sending software initialization to ...
0
votes
0answers
123 views

2.4" TFT LCD Shield isn't working on Arduino Mega

Even on ebay's website it is mentioned that I can't use 2.4" TFT LCD Shield display on attach to Arduino Mega. The problem is that I bought this shield by mistake. I want to put this shield onto ...
1
vote
1answer
132 views

A black blinking box character on LCD [closed]

We have a machine which is using a timer and the timer has an LCD, a few of the displays, with no reason all of a sudden displays a black box blinking... If I switch off the machine from power switch ...
0
votes
2answers
99 views

Why was a transistor used in this circuit for setting the backlight of an LCD display?

The transistor connection was used to set the back-light of an LCD display. Can you explain why a transistor was used and why those resistor values were picked?
-1
votes
1answer
90 views

If your monitor screen flikkers, what could be generally the causes of this? [closed]

If your monitor screenlight (not data, just the licht behind it) flikkers, say 30 times per second orzo, what could be generally the causes of this flickering of the light generally speaking?
1
vote
1answer
369 views

Problems with LCD initialization: 4-bit mode

I have this microcontroler with this LCD(DEM16216) mounted on it which I cannot initialize. Only 4 of the pins are connected, thus it runs in a 4 bit mode (I think?). I found the datasheet for it ...
4
votes
1answer
107 views

LCD: do black pixels spend energy?

Does displaying black screen (but not turned off), consume less power than a white screen? Or is the screen just blocking light to show a black pixel and not blocking for not showing it? And, if I go ...
12
votes
5answers
6k views

Why there are no circular LCDs?

There are some potential uses for round LCDs, for example smart watches. Searching reveals couple news from while ago but I haven't seen any in real use. What is the main reason why these non ...