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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6
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1answer
1k views

LCD modules with I2C or SPI interface [closed]

I would like to add an LCD to my current design (a project that is to be produced in low volume, around 50 to 100 units). A small display size (around 8 or 16 characters) should be plenty since it is ...
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2answers
273 views

Interface a LCD to RS232

Is it possible to connect this LCD display. Directly to the PC serial port using a prolific usb 2 serial converter ?
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2answers
458 views

Why do displays with auto-synchronization function get out of sync? (pixels blur) [closed]

I'd like to know why LCD displays that have the "Auto" button need it in the first place. Are they losing sync with the signal because of some special feature or all LCD displays really suffer from ...
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2answers
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How to plot a graph on Nokia 5110 LCD

I have interfaced a Nokia 5110 LCD to a PIC. It displays characters using a font table. Is there a way to plot ADC data on the LCD with ADC data on Y axis and time on X axis? I do not want to use a ...
2
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3answers
749 views

Controller that supports multiple LCDs, ideally up to 5

Are there any controllers that support multiple LCDs? Ideally I'd like to connect up to 5 LCDs to a single controller. The sort of LCDs I'm mainly interested in are smallish units around 320 x 240 ...
3
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2answers
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Atmega32 + LCD displays nothing

I'm trying to write a program in C to display text on this LCD, for some reason it displays nothing at all. I followed this tutorial on youtube and used my schoolbook (I recently started studying ...
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1answer
2k views

Arduino LCD displays weird character after a while

I having some issues with an LCD. I have made a climatic control system that controls some relays (output) and receives some input from water pipe sensor and ambient temperature/humidity. This was ...
1
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1answer
247 views

Can a CD4056BP drive an LED display

I bought some 7-segment LED displays along with some BCD-7 segment decoders. The clerk said he didn't have the exact part I asked for and instead gave me a Texas Instruments CD4056BP. He said it was ...
5
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1answer
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Interfacing with the kind of LCD found in thermometers

I have been experimenting with various sensors recently, and one common functionality I have needed with all of them is the ability to see the data being measured. Thus, I am considering attaching a ...
6
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2answers
47k views

How do I power a LCD Backlight inverter (got from a disasembled LCD screen) [closed]

I have two LCD Backlight Inverters lying around here and I want them to powerup without using any laptop part / motherboards. I want to power it by using a simple power source, I have both AC and DC ...
4
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3answers
947 views

Is this a serial LCD?

I had a broken remote for a small RC helicopter that I took the LCD off. I dont know the size, but I could try to describe the pins and maybe someone could pinpoint what this is. It has 7 pins, and ...
3
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2answers
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How does the Microsoft Surface table detect objects?

I saw that the Surface table (now called PixelSense) detect objects. The strange thing is that it's basically an IR screen with LCD on bottom. How does it "scan" them then? Here's a video http://www....
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1answer
128 views

I'm looking for a chip which can play media files stored in a pen drive connected to it on LCD tv

I am searching for such a chip which has a usb input to connect a pen drive to it. The chip should have a HDMI output (or any other suitable output) to display on a LCD tv. For example, I have a movie ...
2
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6answers
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How do I exchange LCD display with 7-segment LED's?

I have bought a cheap radio controlled clock, and I want to make a hack that replaces the existing LCD display with 7-segment LED's. With my voltmeter in AC mode, I can measure voltages(with respect ...
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2answers
5k views

How to feed an SPI TFT display a signal from a composite video source

Here is the module I am looking at: 1.8" Serial 128X160 SPI TFT LCD Module Display + PCB Adapter with SD Socket So my question is, is there any way I could convert a video signal from a composite ...
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3answers
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LCD/display for a digital thermometer-like device

I need a small LCD display for a digital thermometer-like device I am making. I need to be able to display 6 digits or letters only.The main constraint is the small size and rectangular shape.I cant ...
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2answers
2k views

PIC 18F4620 with LCD [closed]

I am doing a project using PIC 18F4620 to display readings on a LCD. but I am not sure how my power, LCD and pic 18f4620 should be connected. Is there any suggested schematics??
6
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4answers
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In LCD Display,scrolling only one line

In LCD Display, I want to SCROLL only one line in and Second line will be constant. I am using 0x1E command but the entire display will move.What commands is using for scrolling one line? I am using ...
8
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3answers
2k views

What is this type of digits-only LCD called?

I've seen this type of LCD many times in weigh scales, calculators, gauges, micrometers, etc. I know it's a fairly traditional display but I really like its compactness, simplicity, and maybe it even ...
3
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3answers
591 views

Microcontroller or arduino alternative for small cell-phone sized device?

I am doing a project in which I need to read RGB values from a color sensor TCS230 and send it to a microcontroller and use an linear equation to get glucose value from it and display it on an LCD.As ...
5
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2answers
2k views

What is the use of the unused Data pins of a LCD

I've a 16 pin LCD. The whole display (16x2) can be driven just using only half of the data pins (D4 - D7) of the LCD. Other 4 data pins (D0 - D3) can be neglected. I need to know why then the LCDs ...
5
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2answers
6k views

Identifying Pins of an Unknown LCD

I got a LCD removed from some device. I need to check whether it is working. But the thing is I only have the LCD, no datasheet or any documentation regarding that. I have an Arduino mega 2560. I'm ...
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1answer
271 views

Design a simple circuit to generate -21V..-24V from +5V

I have got an old-STN-LCD which needs a very negative voltage, -21V..-24V are required in order to do the proper contrast, a current of less than 200nA is required, the LCD controller also requires a ...
3
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1answer
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How to program an ATmega32 in C++ to control a LCD?

I'm electronics student. I'm a newbie in programming. I have loved C++ after watching some videos on C++. Am using Atmega32 uC, WinAVR GNU GCC compiler programming tool, 16*2 Hitachi HD4478OU LCD for ...
4
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1answer
201 views

What type of connection is this?

I pulled apart an older augen netbook that ran windows CE. I was wondering what type of connecter this is. I just got my Raspberry Pi in the mail and was looking for a way to connect it for a project ...
3
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2answers
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Small variable width fonts for LCD display

I'm looking for a small variable width font that can be used on small LCD screens (in this case a 128x64 pixel screen). I'd like it to have a height of 8 pixels or less, so that the characters will be ...
0
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1answer
126 views

Arduino and Display in different rooms, possible?

I only wondering which four pins I have to connect for the LCD4884 from SainSmart, because I want to have Arduino and the LCD in different rooms. Is it possible?
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3answers
871 views

How does the HD44780 LCD work at the low level?

I'm not asking for a driver specifically, but how exactly it works. I looked up the 2 chips that were in it. HD44780A00 and HD66100F to be exact. I'm assuming one is a display driver? And the other ...
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2answers
588 views

Need help getting SainSmart TFT LCD working with mega

I bought ths TFT LCD instead of the one I asked about yesterday. This unit has wider screen and has a touch panel. But I can't get it working. Can't see which wires to connect to mega. I have not ...
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1answer
443 views

A quick question about TFT LCD

Can I use this 1.8" TFT LCD to make it show graphic? Or all the TFT LCD can display graphic?
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2answers
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Inverter ICs for (5v DC -> 5v AC) and (9v DC -> 9v AC)

What are some ICs that can turn 5v DC into 5v AC? How about 9v DC into 9v AC? I'm wiring up the liquid-crystal lenses from active shutter 3D glasses to be electric-powered sunglasses. Depending on ...
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2answers
165 views

I ran into LCD problem

I am using Arduino mega 2560 and LCD with I2C. it is working well powered by USB but not working powered by external wall charger (9vDC). The LCD is on without any character. Do you know the issue and ...
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1answer
177 views

Compatibility and hookup question [closed]

I am considering connecting my Arduino UNO and Sainsmrt Sensor shield V4 to this TFT LCD . Are they compatible? If they are, how am i supposed to wire them up?
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1answer
463 views

Using a specific LCD with an arduino

I have the following lcd (DisplayTech 128x64 COG STN Y/G) unfortunately after reading the data sheet I still have no idea how to hook this up with an arduino. Could someone either assist in explain ...
0
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4answers
439 views

Stand alone LCD display for sensor monitoring [closed]

I am looking for a standalone (meaning self contained, enclosed, mountable to a wall etc) LCD display to monitor a process sensor. I would like to feed this unit a 4-20mA or 0-10VDC signal and have it ...
-1
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0answers
70 views

Got error in 1602 LCD [duplicate]

Possible Duplicate: Mega 2560 and LCD 1602 got error messages when upload I just received the Sainsmart 1602 LCD and when I was trying to get it work, tried the hello world sketch, I got this ...
4
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1answer
7k views

What is the acceptable current draw on pin #9 on a VGA connector?

I'm trying to appropriate the 5v that comes into an LCD monitor on pin #9 of a VGA connector to power a microcontroller with some sensors, and LEDs. I've found a discussion on this topic on a ...
9
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4answers
22k views

Debugging a 16x2 LCD Display on an Arduino

I have a standard 16x2 LCD display (I believe it is Hitachi HD44780 compatible - see summary and specification below), hooked to an Arduino Uno using 4 data pins, as described here, though I've added ...
5
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1answer
22k views

How to connect an Arduino UNO to an LCD 1602

I got an Arduino UNO and a 16x2 alphanumerical LCD on hand, the LCD looks like this: I just have no clue about how to connect these two together. I got some Dupont Line, just want to know how to wire ...
2
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2answers
3k views

HD44780 based LCD display shows half-black, half-blank

I have been trying to get a HD44780 LCD display to work for multiple times. The first time was by parallel port from a computer, then multiple times using different PIC uCs. I am only able to get the ...
1
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1answer
452 views

LMB204BDC with CCS Flex 4x20 driver not displaying text

I am trying to get an LMB204BDC LCD screen working with a PIC16F877a and the Flex 4x20 Driver (I'm programming in CCS BTW), however for some reason the text is not displayed. Before, I mistaked the ...
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2answers
2k views

For the Arduino Uno, should I use a 3.3V or 5V serial LCD?

I am just getting started with Arduino, so please forgive me if this is a stupid question. I was searching for serial LCD displays, and found them in two variants: 3.3V and 5V. I looked on the Uno ...
0
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1answer
795 views

Verilog: Pass a vector as a port to a module

I have two modules counter: Output is a vector called error_count. lcd: Module to display the code on an LCD. Input includes clock and error_count. Following snippet of the code is most relevant and ...
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1answer
124 views

Electrophoretic Displays

I am extremely interested in learning about electrophoretic displays. On their architecture, how they function and also would like to assemble one from the scratch for myself and see how it works (I ...
3
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1answer
766 views

PIC 18f4685 and Hitachi 44780 LCD

Anybody have some sure to work 4-bit interface C code for a PIC 18f4685 to Hitachi LCD 2-line display? I'm using a Northmicro proto board with a LCD module which is Hitachi 44780 compatible. Using ...
0
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1answer
2k views

reading data back from lm016l LCD(HD44780)

How to read data back from a lm016l lcd(HD44780 based)?I couldn't find any useful data on reading except writing.I have followed hd44780 datasheet ,but when i try to display what i read back,the whole ...
2
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2answers
3k views

Interfacing HD44780 compatible LCD display and Spartan 3 FPGA

I've recently bought HD44780 compatible LCD screen (16x2) from eBay. I want to use it with my Spartan 3 FPGA development board, but after I've thought a little about it, I'm not sure that I can use it....
3
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4answers
29k views

LCD / LED panel power consumption

Does an LCD or LED monitor consume lot more power if the pixels are changing their colors or does the backlight have way more impact on power consumption, which makes changing pixel colors' power ...
0
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2answers
6k views

LCD Programming with Arduino

I'm trying to get my LCD to display "Voltage= (variable)". I have it programmed to write the text and I have a pot wired to my arduino and I'm trying to get a voltage number to come after the equals ...
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2answers
1k views

Good LCD for clean mounting in hobby project?

I'm refurbishing an old Kenwood amplifier--- removing the old faceplate and adding a board with a microcontroller, multiplexer IC, digital pot for volume control, IR receiver, etc. I'm also ...