Questions about LCDs, 7-segment LEDs, E-ink displays, etc.

learn more… | top users | synonyms

1
vote
2answers
40 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 ...
1
vote
1answer
31 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 ...
0
votes
2answers
28 views

VHDL - displaying 4 digits on 7-segment display

I wrote a vhdl code, that would display 4 digits on cpld 7-segment displays. I used a state machine to select the display, and with ... select instruction to select a set of bits given to the current ...
1
vote
1answer
55 views

Vacuum Fluorescent Display (VFD) serial connection ~ Debugging Questions

I am attempting to display information on a Futaba Vacuum Fluorescent Display (VFD) (apologies for the google-drive link to the datasheet. I lost the original and couldn't find it again). I'm ...
0
votes
4answers
79 views

Working display connected by GPIO pins to microcontroller?

Would it be possible to add a normal HDMI port or a display to any microcontroller with the GPIO pins? (I didn't buy anything yet, I'm just getting information before I buy...) EDIT: Thanks for all ...
-1
votes
1answer
32 views

What display and controller to use [closed]

So I intend to produce a prototype for idea I am have, this idea works off a screen a a micro board, I do not understand much about the subject but I indent on having a screen (7") which I will be ...
1
vote
3answers
57 views

Help driving a VFD Display

I managed to pick up a few cheap VFDs (Vacuum Fluoro Displays), but the information about them is scarce. What makes matters worse is that I am a post vacuum tube era child, so my knowledge in the ...
1
vote
2answers
69 views

LED radio display - How to control multiple segments at a time?

I have a display from an old radio (I think it was a Watson). Now, there are different wires connected to it: Let's call the first two A and B and one of the others (it seems to be not so important ...
0
votes
0answers
21 views

display the output of a MATLAB simulation model for an induction machine in space phasor illustration

Hello, do any one know, if is it possible to display the output of a simulation model in MATLAB with the space phasor illustration? (in german: Raumzeigerdarstellung) as the picture shows: I have ...
0
votes
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 ...
0
votes
1answer
60 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 ...
-2
votes
2answers
126 views

Intercepting graphics card output?

I was wondering what it would take to intercept a PC's graphics card output or parts of it. First of all I'm wondering if you could even intercept the output without increasing the latency between the ...
-2
votes
4answers
101 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
0
votes
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?
1
vote
1answer
73 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 ...
1
vote
2answers
89 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 ...
25
votes
3answers
602 views

What is this unusual LCD controller technology?

Preface: Even if you do not have a definite answer, I would greatly like feedback from anyone who has even seen an LCD using this technology. I recently took apart a Canon digital camera from the ...
0
votes
1answer
54 views

Two voltage regulators on same circuit

Would it work if I have a lithium ion battery that's connected to a voltage regulator that's connect to a Raspberry PI then another voltage regulator to a display?
1
vote
1answer
84 views

What is the pin to light up colon in Basys 2?

I am trying to make a clock in a Basys2 board but I can't find in documentation the pin to light up the colon of the 7segment display. Where is it?
6
votes
1answer
309 views

LCD driver: What changes in 3-D mode?

Facts: We know that a system needs high data transfer speed if it works with +120 Hz refresh rate and +1080p resolution(This mostly requires DVI dual link). We know that in a 3-D system with ...
0
votes
1answer
77 views

NHD-0216HZ-FSW-FBW-33V3C Black Boxes in Line LCD Display

I installed a NHD-0216HZ-FSW-FBW-33V3C with an MSP430g2553. I tried to initialize it for 4-bit mode in assembly language but black boxes still shown and initialization is not completed I think. My ...
0
votes
1answer
54 views

Energy consumption of a small TFT

I am looking to replace a 4.3 inch TFT (480*270 px - 400-500 mA @ 5V) by a more energy efficient one (other sizes welcome) to go with my raspberry pi driven handheld emulation console. What is the ...
0
votes
3answers
181 views

BPM Generator with display?

Trying to figure out how to design this with decent precision but having trouble getting this started. I've worked with 555's before but not for precise counting that can be modified in steps. I'm ...
2
votes
2answers
149 views

Error sending data to LED Display board from a microcontroller

I have a LED Display which has a RS232 connector so that we can connect it to our system. Display board accept whatever data we type in hyper terminal and display it. For e.g if I type ...
1
vote
1answer
60 views

How to connect a 4D display to a beaglebone black?

I am fairly new to all this so sorry if this question is rather trivial. I have a 4D Picasso Display (28PTU-Pi) and I want to connect it to my Beaglebone board. So plugged the usb cable into the ...
0
votes
1answer
360 views

Interfacing I2C OLED display with pic18f2550

I've been trying to interface SSD1306 I2C oled monochrome display module with PIC18F2550 micro-controller without any success. the datasheet of ssd1306 controller shows the following data format so ...
0
votes
2answers
99 views

Why LED signboards shake when I eat an apple? [duplicate]

while I was sitting in city center with so many LED (especially red ones mounted) signboards and I was bitting an apple, the signboards suddenly begin to shake for only a second while my head is ...
0
votes
2answers
229 views

Missing segments in LED fridge display [closed]

What can I try to fix this display? I assumed water vapor got into it from opening and closing the fridge door so I tried these things: I disconected it and left it in the sun for 4 hours. I ...
7
votes
2answers
2k views

How does E-Ink Work?

Can someone explain how this really works? I don't understand those bubbles, and how you get different colors on this type of screen, or it is only black&white, does it works similar to ...
0
votes
3answers
226 views

7-segment display decoder

truth table for a 7-segment display decoder. It converts a binary input x[3..0] to a 7-bit code which drives each LED in an LED display am a bit confused can anyone just give a hint i want to produce ...
0
votes
2answers
55 views

Appropriate Brightness for LED Displays

This may be a question strongly depending on application and opinion, but I'll give it a try. I am designing some controls for an industrial application, including cap touch buttons and LED 7-segment ...
2
votes
1answer
256 views

VHDL 4-display counter on a Nexys 3 (0000 to 9999)

I'm triyng to implement a 4 display counter (0 to 9999) on a Nexys 3. However, when I load the bit file, all displays remain at 0. It seems like variables a,b,c,d; which control individual digits, ...
1
vote
1answer
115 views

Using a LS248 7-segment driver, but segments are dim. Can't figure out why

I'm building a project where I want to use two double-digit 7-segment-LED displays (green, common cathode). From what I've read, a shift register wouldn't be able to source enough current, so I ...
0
votes
1answer
109 views

A possible decimal digit dvm?

I would like to build a 3x10 decimal digit dvm for an edge lit numerical display. The nearest schematic that I can find is using a CA3162E / LM74LS147 which can be found at: ...
1
vote
1answer
158 views

LED Display: Understanding Led pitch, resolution, viewing angle and distance

i'm working on project in which we need to design a Led Display. I google some information and get a little confused about some key topics. Some of them are: Led Pitch Viewing Angle Resolution ...
1
vote
1answer
80 views

RGB matrix displays?

I'm working on firmware for LED display composed of Chinese RGB LED matrix modules (1/4 scan, 16x16, RGB). I want to find out how some pictures are displayed in three colors, is there any idea behind ...
2
votes
3answers
149 views

What is this display technology called?

I saw this display on Adafruit. They describe it as a mix of an e-ink (the low power consumption) and an LCD (the fast response time). And further as "a matt silver background, and pixels show up ...
1
vote
2answers
210 views

16 segment LED sparkfun resistor help

I am quite new to this and am struggling to read through the data sheets of the Sparkfun 16 segment display, datasheet here. I have managed to get all of the LEDs wired up through a LED driver, with ...
1
vote
1answer
129 views

What are these displays called?

I now searched the web for about an hour and just can't figure out how these displays are called or where to buy them. A lot of airports use them for the departure table. They seem to be just ...
3
votes
1answer
112 views

How are DACs integrated in color LCD screens?

I'm having trouble imagining what actually happens inside an LCD screen. I picture digital RGB data for each pixel getting sent to the screen through a connector. Lets say we have 24-bit color for ...
4
votes
2answers
125 views

Self Contained Temperature Display in Very High Temp Environment

I want to build a temperature sensor + display that will operate in a high temperature environment (routinely 120C, but periodically spiking to 175C, and might be exposed to 350C where it would be ...
-5
votes
2answers
110 views

3D display, that's actually3D [closed]

So one night, (last night) i was in bed trying to get to sleep, and then something came to mind, this one thing came to my mind and got me excited. You may now be wondering what came to my mind, or ...
1
vote
1answer
353 views

How exactly does a VGA cable work?

I've been looking around on the internet and I can't find anything in depth on how the cable/connection functions. I've only been able to find simple pin out descriptions. If someone can link me or ...
0
votes
3answers
267 views

Driving 50-pin e-ink display with one chip?

I'm trying to connect this 50-pin e-ink display to an Atmel ATmega328p for a hobby project. The biggest design challenge I'm facing is connecting all the pins from the display to the MCU in an ...
0
votes
2answers
179 views

Power Supply amp doesn't match with adapter. Can I use the adapter? [duplicate]

Can I use this LCD display: http://www.itontec.com/product-detail/product-name-7/ With this adapter: *Display Specs: Power Supply(5~12V 2A) *Adapter Specs: Output: 12V - 1A Is that safe to use ...
1
vote
2answers
1k views

SSD1306 Display ISP Connection or I2C (According to resistors)

I bought one of those cheap 0.96" OLED Displays from china, ebay. In the product description it states that it's a I2C Display, Ebay Link. I want to use it with an ATmega8. I connected it accordingly ...
1
vote
1answer
68 views

Running a 7v shift register from arduino 3.3v

Im trying to learn some electronics, so im not that confident with some of these systems, I recently bought a load of the alphanumeric displays from Sparkfun but foolishly read the data sheet for ...
0
votes
0answers
158 views

Odd red noise appears on the display of my Samsung SyncMaster 943N monitor [closed]

I have a problem with my Samsung SyncMaster 943N monitor. For some reason red noise appears on the displayed screen. Notice the red noise around the white zones in the image: Tried connecting it ...
0
votes
1answer
107 views

blinking a display using trigger

I've been banging my head over this for a while now, basically I have this display driver that in normal conditions would update a seven segment display continuously. What I would like to do, and I'm ...
0
votes
1answer
52 views

Can a LCD display work with swollen capacitors for a large period of time until briefly turned off? [closed]

I am trying to figure out why would my very old SyncMaster 720N stop working after turning it off for a very brief moment. I've already had issues with it, I had to replace some capacitors and then it ...