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.
2
votes
1answer
65 views
Is this a common LCD display?
I'd like to know if this LCD display is a common one like the HD44780. Sadly there is no model number on it, only the brand(?) "onv" or maybe it should be "auo" when you read it upside down. It's part ...
-1
votes
0answers
20 views
Interfacing MSP430 with a INT035TFT (TFT LCD) [closed]
I have a INT035TFT 3.5 inch TFT LCD manufactured by Displaytech ltd. I need to interface it with the MSP430-P1611 board from Olimex. The LCD already has an inbuilt display controller(SSD1963), so I ...
-3
votes
0answers
42 views
3.2" LCD & SainSmart Mega2560 [closed]
Today I received the 3.2" LCD TFT shield and the SainSmart Mega2560.
I can`t contact the LCD with my Mega2560. What can I do?
The original question is that I do not know how to connect the 3.2" LCD ...
1
vote
0answers
46 views
Arduino - Solenoid Valves and Pumps Control (Relay Shield & Motor Drive Shields)
I’m trying to control two Diaphragm Pumps (12VDC/4.3W) and five Solenoid Valves (24VDC/10W) using Arduino Uno & Arduino Display Module.
I know there are many different ways to control these ...
1
vote
0answers
72 views
16 x 2 LCD not displaying analog inputs fed to ATmega168
I am experiencing some problems getting a display of analog inputs(current and voltage) fed to ATmega168's A0 and A1 respectively. I believe the wiring and the program are correct since the same ...
-2
votes
0answers
56 views
ARM board for DIY GPS [closed]
I have been experimenting with a u-blox 7 module hooked up to my laptop via USB. Now I want to try using it to build a DIY GPS receiver. But I am not sure which ARM board to go with.
Basic specs I am ...
3
votes
2answers
69 views
Getting rid of ripple from an LCD backlight
I have built a circuit which contains an integrated power supply stepping down mains voltage to 5v through a transformer, rectifier circuit and a voltage regulator. With a couple of smoothing caps the ...
0
votes
0answers
34 views
how to add 0.8 mm FPC hotbar soldering in cadsoft Eagle ?
I am designing a connector for my 2.2 LCD which has 0.8mm pitch fpc cable for soldering. I could not find the board for 0.8mm pitch. So I want to design my own. But in eagle the default library has ...
0
votes
1answer
41 views
DFRobot LCD shield minimum pin connections
I am connecting a DFRobot LCD shield (http://www.dfrobot.com/index.php?route=product/product&product_id=51#.UYWE0itxsVk) to a bareduino. There will be no shield placed on top of the LCD and am ...
1
vote
0answers
95 views
MPLAB XC8 vs MikroC problem
I have been trying to write a program for LCD on PIC18f452. I found a library and worked on it and MPLAB XC8 compiled it successfully. I tested it in ISIS and it ...
1
vote
0answers
118 views
TFT LCD interface with a Microcontroller: Getting Started
I have a small 3.5 in TFT LCD display from a Chinese manufacturer. It doesn't have an integrated LCD controller. The documentation claims it is a "16 bit RGB/parallel interface" and it uses a Renesas ...
2
votes
3answers
103 views
TFT LCD pixel clock filtering
I would like to know how to filter the pixel clock in order to reduce emitted radiations.
Block diagram
The LCD controller is part of a motherboard. A board, connected at the other side of the FFC ...
-4
votes
0answers
42 views
Is it inverter problem? [closed]
I was working with my vaio, suddenly the screen became pale blac, it is on but only black, when I connect it to external monitor it works perfect, from that time, sometimes after turning on for 10 or ...
-1
votes
1answer
163 views
HDMI/VGA/NTSC/PAL to 24-bit parallel RGB interface [closed]
Adafruit.com is selling TFT-LCD modules that comes with an NTSC/PAL driver board. The product specification page includes a link to the original manufacturer´s datasheet/specifications for the TFT ...
0
votes
0answers
53 views
TFT LCD shield doesn't work properly
We have bought TFT LCD shield 2.6.
And got library for it by this link:
TFT LCD Library
When we try to execute graphicstest example, it shows setup part. But doesn't show loop part. What can be the ...
2
votes
2answers
30 views
Interfacing a 16x2 Character LCD to the Arduino
A friend recently gave me a set of three (old) 16x2 LCD displays. (datasheet)
However, I'm having difficulty thinking through how to connect one to my Arduino. Particularly, each LCD has 14 (!) ...
1
vote
1answer
37 views
How to flash error if a macro is not defined in program
I want my program to flash compile time error like "LCD_PORT not defined" if it is not defined in program itself. For that I modified the header file like this
...
0
votes
1answer
68 views
24-bit parallel TFT module on circuit designed for 16-bit parallel
I've designed a circuit that connects a 16-bit parallel LCD TFT module to the SPI-connector on a RPi, but bigger TFT modules often have 24-bit parallel. Can I use a 24-bit parallel TFT with my circuit ...
16
votes
4answers
401 views
Do graphical/pixel mapped LCDs need a screensaver?
Will displaying the same for a very long time on a graphical or pixel mapped LCD harm the display in any way?
If so, what would be a maximum time to display the same, or how could I determine that ...
2
votes
1answer
93 views
A small, thin LCD for my device
I've been looking for a good display for the handheld device that I'm building and I've liked the various HD44780-based displays that I've tried. (like for example this one: ...
3
votes
1answer
88 views
What makes a display visible in daylight (such as the Pixel Qi)?
What characteristics of the Pixel Qi display make it visible under daylight conditions?
It seems to have something to do with "daylight grayscale". But what exactly does "daylight grayscale" mean? ...
-3
votes
1answer
70 views
Reusing monochrome LCDs [closed]
I have been looking for old monochrome screens without much luck. I would like to do a project that can control the screen with a microcontroller. There are many old devices on eBay with nice ...
2
votes
1answer
181 views
Can I use a voltage divider circuit instead of a level shifter here?
I am trying to hook up an LCD module to my microcontroller, and was following this tutorial.
Notice that the three signal wires all go through a level shifter, which drops the voltage from 5V to the ...
0
votes
0answers
71 views
OLED Custom Character not being displayed correctly on Arduino Uno? Too Many?
So I have a bunch of custom characters and they are created like this
...
0
votes
1answer
87 views
Simplest device for mini operating system
I have been developing an operating system off of this video and I want to begin building a device to support this os. All it really does is print to the screen. I want to build a small device with an ...
1
vote
2answers
250 views
PIC16F877A (with LCD) not working
I have designed a PIC18F877A micro controller project to read temperature from an LM35 using ADC, display it on an LCD and transmit it to a serial port.
When the program starts, sometimes it shows a ...
2
votes
2answers
156 views
Applescript to Arduino LCD only works with Serial Monitor
I spent all day trying to figure this out and finally got somewhere that atleast lets me know that I am doing something weird...
I am trying to send data to my LCD Screen on my Arduino Uno, but for ...
0
votes
1answer
100 views
Using touchscreen cellphone lcd module for custom projects
I intend to use the capacitive touch based lcd modules of cellphones in custom embedded projects,
I will be using this display with low cost stm32 boards.
Has anybody experimented with this approach ...
1
vote
1answer
122 views
Voltage Level Translation: LCD(5V) -> GTL2000 <-> MCU (3.3V)
I am trying to interface a micro-controller (LPC11C14) to a LCD. The LCD has Vih = 3.5V so I cannot directly connect the uC pin to the LCD. For this, I found a GTL2000 chip which looks like it might ...
0
votes
0answers
87 views
Design of an inverter required to run 5 laptops and 1 LCD (32") for 8 hours
I need to design an inverter which will run 5 laptops and one 32" LCD screen for 8 hours.
As per my calculation,
average laptop = 135watts
average LCD = 82watts
wattage for 5 laptops = 135*5 = ...
-3
votes
1answer
200 views
Arduino 3 digit LCD calculator
We would like to build a calculator using Arduino which uses 3 digit LCD and a keypad similar to digital phones. (# for plus , * for minus) Which components and way is good enough to not to run out of ...
3
votes
1answer
105 views
Monochrome LCD sources [closed]
I'm planning on doing a one-off project that will need a monochrome LCD 3-4 inches wide. Unfortunately, I haven't had much luck finding what I need. Smaller screens like those salvaged from cell ...
1
vote
2answers
238 views
7 segment LCD works on breadboard, not on stripboard
I am using a 7 segment 3 1/2 digits "raw" LCD (like this one) using 4 CD4543 controllers and a MSP430. I use one of MSP430's pins to create a 30Hz square wave that I feed into CD4543's phase input. ...
-3
votes
1answer
79 views
Problems With The Desktop Contemplator Code [closed]
I cannot get the ContemplatorNV.ino code to down load from the Nuts& Volt article. I have tested the complier on an Arduino Uno on code I know works. This at least proves the compiler, USB ...
3
votes
2answers
80 views
Best practicce to refresh data on LCD
I am currently reading value from ADC and displaying on LCD screen. The ADC is supported by DMA. Now my system has 5 menus seen on LCD (Voltage, Current, Resistance, Settings). 3 of them should ...
0
votes
0answers
71 views
Data loss between parsing and displaying on an 8 by 2 LCD
I'm trying to display strings that are larger than eight characters on the top row of am 8 by 2 LCD by making them scroll across the screen. I'm using a PIC16f1936 microcontroller and MPlab x IDE.
...
-1
votes
1answer
86 views
How to address a 16 bit LCD using 8 bit bus?
I need such a TFT with SSD1289 controller, but with 8 bit bus.
Does anyone know how to modify it?
1
vote
2answers
89 views
LCD Multiplexing: Segment Off Voltages
I am reverse engineering a LCD (this is a raw bit of glass, i.e. no controller) and trying to understand the signals... there are 16 lines of which 4 are backplanes and 12 are segment lines.
The ...
2
votes
1answer
110 views
Hantronix 20x2 LCD backlight
I recently got a big box of Hantronix 20x2 LCD from a friend. They appear to be the negative type, where the 'on' pixels appear as clear and the off are opaque. When he gave them to me he told me that ...
3
votes
3answers
115 views
Freetronics LCD pins all used up
I am new to electronics and recently bought Freetronics Arduino experiment kit with the Freetronic LCD shield with keypad. I have installed the LCD shield and now I realize I no longer have any pins ...
3
votes
2answers
252 views
Reverse engineering a 12 pin LCD?
I just found a broken "laser projecting alarm clock". I took it apart, and am interested in only the laser projection arm. This consists of a laser diode (although I suspect that this is actually just ...
-1
votes
1answer
151 views
Does someone make a 7-segment or LCD display in an industrial enclosure that I can drive with RS232 or RS485? [closed]
I'm working on an industrial machine (factory automation) that has a nice PC-based control interface but it needs a secondary display of a couple lines of numbers.
Is there an off-the-shelf product ...
1
vote
0answers
121 views
TFT display with ILI9328 controller
I would like to get started with TFT displays (expecially "printing" text on the display). I feel like standard 20x2 or even 20x4 LCD displays are somewhat too limited. Plus touchscreen maybe a good ...
1
vote
2answers
284 views
16x4 lcd not desplaying anything
I am trying to interface a 16x4 lcd with an atmega32 chip. I wrote the following code which used to work for 16x2 lcd
...
-5
votes
1answer
182 views
List of companies offering ARM evaluation boards for free/reduced prices (5 - 10$)? [closed]
Does anyone know of any free evaluation boards based on ARM Cortex M or A processors? Or at least for really cheap prices? Are there any who offer free electronics start up kit?
Free LCD samples, ...
0
votes
1answer
152 views
How to get a CVBS signal into an TFT LCD Panel over TTL
I have a TFT LCD panel from Chi Mei, namely G104V1-T01 on which I want to show a PAL composite video signal. As the datasheet tells me, this panel uses TTL (as opposed to LVDS) for data transfer, so I ...
0
votes
1answer
211 views
Diagnosing LCD backlight inverter problem
I am having problems diagnosing the error with a notebook LCD display inverter.
Symptoms: After switching the notebook on, the LCD backlight comes on but the intensity oscillates rapidly (flickers). ...
-2
votes
1answer
97 views
free drawing on a touch screen, interacting with physical objects [closed]
I am an hobbyist and having a plan to create my own drawing tablet, and still making ideas, I want to combine physical world with this thing, an idea that I have is that I want line that I draw with ...
0
votes
1answer
100 views
Using LCD module with poor / missing datasheet
I've got an NMTB-F000393FGHSAY-A 2-row character LCD display module, which I'd like to use in a project. It's got 18 pins in a 2x9 configuration on the back. I pulled it out of an existing (broken) ...
1
vote
1answer
234 views
How to shift cursor of a ST7032i based LCD?
I am using a MIDAS MCCOG21605B6W, I2C interfaced, COG type LCD.
I am also using a PIC16F616 microcontroller to interface it and I am bit-banging the I2C protocol.
I can initialize the LCD, write to ...
