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

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OLED segment voltage reference pin

what is the purpose of a segment voltage reference pin in general or particularly in a OLED display controller SSD1322. The datasheet says: When external VSL is used, connect with resistor and ...
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31 views

Test a ssd1322 based display

What's up folks? I have a problem with one OLED display based on the ssd1322 controller. The DD-25664GE-1A is a 5.5 inches display for which I made a custom PCB connecting the controller to a ...
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2answers
85 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 ...
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2answers
88 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 ...
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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 ...
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3answers
80 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 ...
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2answers
36 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
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1answer
71 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, ...
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1answer
63 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 ...
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0answers
36 views

Which TFT display to use for faster processing speed?

I'm planning to integrate a user interface into my arduino project and came upon TFT displays. While interfacing with the TFT displays, will it affect the performance of the arduino processing? Also ...
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0answers
32 views

I2C Display Module (NHD-C160100-DiZ) for DIY Scientific Calculator Help

Good evening everybody reading, This is a project I've been developing for about 6 months. I am stuck because I can't get the display module (datasheet here) to work. I attached my schematic for the ...
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1answer
61 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: ...
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1answer
68 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 ...
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1answer
42 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 ...
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3answers
105 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 ...
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1answer
143 views

Why is my SSD1306 OLED only displaying half of the screen area?

I am trying to get this display working with my arduino via i2c: http://www.buydisplay.com/default/0-49-inch-oled-display-module-64x32-pixel-ssd1306-i2c-white-on-black I have successfully initialized ...
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2answers
135 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 ...
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0answers
33 views

Will a ThunderBolt Connection, Power an iPad Retina Display?

I like this kit from Adafruit but I was wondering if I could do away with the external power and use the power coming from the ThunderBolt connector to power the display and all other electronics on ...
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1answer
123 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 ...
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1answer
60 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 ...
3
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2answers
99 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 ...
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2answers
88 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 ...
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1answer
130 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 ...
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3answers
157 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 ...
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2answers
58 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 ...
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2answers
448 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 ...
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44 views

how to connect micro display with DPI interface

I am beginner to do this . What I want to do is to connect dart4460 board to micro oled display. dart4460(omap4460) has display interface. oled display supports 24 bit RGB signal. here are specs ...
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1answer
58 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 ...
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0answers
70 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 ...
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0answers
135 views

Can I connect my Innolux screen to Raspberry Pi 2 using TFP401 HDMI/DVI Decoder to 40-Pin TTL Breakout

Setup Raspberry Pi 2 TFP401 HDMI/DVI Decoder to 40-Pin TTL Breakout - Without Touch Innolux 5.6 LCM aSi TFT type LCD I am hoping to be able to connect the Pi2 to the Driver using a small HDMI ...
0
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1answer
85 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 ...
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1answer
50 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 ...
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0answers
110 views

Discrete logic multiplexer

I posted a more in-depth outline of what I'm doing here, but basically I'm building this circuit (for n=3): The circuit displays an output based on the combination of three three-input DIP ...
5
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2answers
174 views

Is my LCD TV doing some sort of dithering? [closed]

I'm using a 32" 'LED' TV as a monitor (1920x1080 over HDMI). I've been noticing some annoying horizontal stripes where the source is displaying grey pixels. It seems that what's happening is the TV ...
1
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0answers
108 views

7 Segment display driver issues

I have this code for driving a seven segment display for hex. From my understanding its logically correct, but when I try and run it on my Nexsys 3 board I never get the correct output, it seems that ...
0
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1answer
90 views

Purchased a cheap LED monitor with no power leads, how do I find the power leads? [closed]

I just purchased a cheap TFT LED monitor and it has no power leads, how do I find where to soldier the power leads onto this unmarked circuit board?
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1answer
60 views

are there differences in energy consumption for displaying color?

The question stems from wanting to design UI's for mobile devices that consume the least power. I'm assuming a dimmer screen will consume less power..but would, for example, green use less power than ...
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1answer
87 views

What kind of a display should I be using? [closed]

Are old monochromatic displays, like the ones used on the original Gameboy (bad example, I know), much more power efficient than modern colour LCD/LED/OLED displays? If so, why are they so hard to ...
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1answer
126 views

what is the value of resistor used for 4 digit 7 segment 12 pin display?

refer circuit http://www.instructables.com/id/Arduino-4-digit-7-segment-display/ .Here no any resistor is use is there any need to connect resistor for a b c d e f g .And is there any alternative for ...
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2answers
284 views

Building a display system with depth - HUD (Iron-Man)

I hope most of us have watched iron-man and got excited on certain parts of the movie. Everyone got their personal favorite. My favorite is the HUD(Heads Up Display). This inspired me to start a ...
0
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1answer
83 views

DisplayLink LCD Controller [closed]

I want a small portable monitor (7 in) that can connect to my USB drive for power and picture (DisplayLink). I've found some cheap lcd screens, such as ...
0
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2answers
186 views

multisized 7-segment displays in a circuit

I want to use 1-inch & 2-inch 7-segment display in a digital clock based circuit(six 2-inch display in a row & six 1-inch display in another row). I am using 74hc164(serial in parallel out ...
0
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1answer
125 views

LCD Display connection

How to connect this http://docdroid.net/ngqg LCD Display to microcontroller? It is ILI9341 based. Is it possible to connect only SPI/LED pins and leave every other input pin floating or I need to ...
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1answer
132 views

Looking for 16 Segment LED/VFD Display with Comma, Decimal Point, and circle

I am building a KITT replica from the TV show Knight Rider. On his dash are 10 characters of 16 segment LED's that have a decimal point and comma. In addition to that, there is a circle beneath each ...
0
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1answer
68 views

What type of display digital watches use? [closed]

I need a "thin" seven segment display to buy. It should be in size of a digital watch. It can be both seven segment display or character display. How should I search? When I seek for 7 segment display ...
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0answers
77 views

How to increase number of LED blocks in a moving LED display

I have been working on a project where I have to make an 80x20 sized moving LED display. I'm using a decade counter to shift the characters being displayed. I want to know, in the programming ...
2
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2answers
144 views

Lots of thermistors but no readout

Back in Sep '12, Olin Lathrop answered a similar question about wiring a digital display to a thermistor, but my situation is slightly different from Jim McDerby's. I too have solar thermal panels ...
2
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0answers
54 views

Where do current developments go regarding graphical displays for devices? [closed]

Our company is currently redesigning a piece of measurement equipment. We have looked at what display we have currently (It's a generic 240 by 64 pixel graphic LCD like this one ) and if there is any ...
1
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1answer
61 views

Small system on a chip : Power consumption [closed]

This question is lying somewhere between electrical engineering and computer science, however I felt that this forum suited my question the best. I post this question because I feel that this kind of ...
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2answers
133 views

Is there a display technology that unites red, green and blue subpixels into a single pixel?

After checking out this question about a visual side effect caused by separation of each pixel into subpixels (red, green and blue), I thought that there might be a way to unite the subpixels into ...