Tagged Questions

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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Connect Lilypad to LCD

I am trying to connect an LCD panel (RioRand (TM) IIC/I2C/TWI Serial 2004 20x4 LCD Module Shield For Arduino UNO MEGA R30) to an Lilypad Arduino. How can I get them to talk to each other? I do have ...
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1answer
25 views

Problem initializing 4-bit mode LCD(DEM 20486 SBH-PW-N)

I've got an ATMEGA16 with a LCD display DEM 20486 SBH-PW-N (datasheet) connected to port C like so C0 - RS C1 - RW C2 - E C3 - not Set C4 - D4 C5 - D5 C6 - D6 C7 - D7 D0-D3 are grounded I ...
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2answers
52 views

HD44780 in 4bit mode connected to only ONE PORT on PIC

i am new to PIC programming. I am using MPLAB X + XC8 compiler. I have on a breadboard an PIC18F4550 connected to a HD44780 compatible LCD. Digging online i found out a routine to interface the PIC ...
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20 views

Can the Arduino use this i2c LCD Panel [migrated]

Can the Arduino Mega2560 use the New Haven NHD-0420D3Z-NSW-BBW-V3 LCD panel by controlling it with the New LiquidCrystal library? What cable will you use to connect the LCD to Arduino, are there screw ...
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1answer
95 views

How can I solder LCD Pins when solder does not “stick”?

I have a 16 * 2 LCD Display, with 16 input pins. However while I am soldering the pins it it does not stick or "take". How can I fix this? Is there any other metal for soldering a display ?
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Sainsmart LCD 2004 - LiquidCrytal_I2C library issue unable to compile [migrated]

I bought a Sainsmart LCD2004 from Amazon to use with my Arduino Uno. I understand that since this LCD uses I2C a new library needs to be downloaded. From the sainsmart website I dowloaded the LCD ...
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1answer
41 views

HDMI to MIPI conversion [closed]

I want to use a 1080p touch panel with an ODROID-XU3 Lite but unfortunately it seems that the ODROID only supports HDMI output and that 1080p panels are only really available with a MIPI interface. I ...
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0answers
21 views

Stack arduino, motor shield and lcd shield [migrated]

I made arduino-stack which consists of arduino r3, robotdf motor shild and robotdf lcd shield. But motor shield and lcd use same pins 4 and 5, so we have a conflict of pins. Can i use other pins?
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53 views

Identifying unusual LCD pinout of salavaged HP printer

I salvaged the following lcd from a relatively new HP printer, but the pinout seems a bit odd, any ideas how could I set up the screen?
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66 views

SPI LCD Screen on OpenWrt based hardware using Atheros AR9331

I'd like to connect a graphics lcd 240x64px to my OpenWrt based hardware, which is based on Atheros AR9331 MIPS architecture. The development board I'm using has SPI outputs... I've been using the ...
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32 views

4-lamp-inverter with LCDs designed for 1 or 2 lamps

can i use a 4-lamp-inverter with LCDs designed for 1 or 2 lamps? The unused lamp connectors could be closed with resistors as suggested here. Or, is it safer to use an 1-lamp-inverter with an LCD ...
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0answers
29 views

Can't drive adafruit display with Arduino DUE

I'm currently trying to write a library for the Adafruit ST7565 graphic display. (see links below) The current one is entirely AVR specific and the code is generally pretty unreadable given the ...
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1answer
53 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
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1answer
69 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 ...
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4answers
105 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 ...
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0answers
93 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 ...
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2answers
125 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 ...
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1answer
83 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 ...
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0answers
69 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 ...
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0answers
65 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 ...
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0answers
66 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 ...
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1answer
82 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: ...
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2answers
102 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 ...
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3answers
201 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 ...
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1answer
51 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, ...
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1answer
137 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 ...
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2answers
84 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 ...
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2answers
178 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
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2answers
135 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 ...
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0answers
67 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 ...
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1answer
114 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 ...
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2answers
95 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 ...
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2answers
86 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 ...
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1answer
63 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 ...
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1answer
75 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 ...
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0answers
45 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. ...
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2answers
76 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 ...
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2answers
56 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 ...
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1answer
312 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 ...
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2answers
118 views

Program memory question (working dispite insufficient memory)

I am writing this program to a Microchip PIC. ...
2
votes
3answers
208 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, ...
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1answer
163 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 ...
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0answers
497 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
103 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 ...
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1answer
62 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 ...
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3answers
322 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 ...
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2answers
92 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 ...
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1answer
71 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 ...
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1answer
63 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.
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1answer
70 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 ...