Questions tagged [display]

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

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29 views

Pass bandwidth of backing light for LCD display

A stardard industry LCD display is composed of several parts. Polarizer film and color filters produce and image by masking the light from a source positioned behind the LCD itself, the so called ...
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32 views

Is it possible to connect to a phone LCD screen? (just the screen) [closed]

I replaced a Xiaomi MI A1 screen that had a few cracks but is completely working. It got me thinking: Is it possible to wire it up to a Raspberry Pi / Arduino? Has anybody ever succeeded connecting ...
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49 views

What display is used in remote control

I'm making a device which requires a display, and the display I want is similar to what goes into remote control of air conditioners. What are these kind of displays, and how do they have some special ...
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135 views

Are all pixels addressed simultaneously in one frame?

In computer screens, is every pixel turned on during one frame? How can you address millions of pixels at the same time? Or is it like in CRT where it is scanned left to right, top to bottom?
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49 views

No display at all tests, but shows continuity [closed]

My multimeter buzzer is ok and sounds when continuity is checked. However, no display on the LCD. Also, no numbers are showing in every tests voltage, resistance, etc. I have replaced the battery and ...
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3answers
154 views

Why do displays have limited bit-depth?

As far as I am aware, HDMI 2.1 does support 12-bit 4K 60fps, Also it doesn't use TMDS, rather FRL. Sends upto 48Gbps GPUs can do calculation in fp32 and from some reference, I think that it can send ...
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35 views

SSD1351 Display showing random bars across the screen

I recently bought this Display and wanted to use it with an ESP-WROOM-32. After some problems I got it to work using this schematic and the Adafruit SSD1351 library. (I connected the 13V of the ...
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1answer
63 views

Microcontroller and design for multiple displays

at my day job I'm an application level developer, but I have an idea that I would like to prototype thats a bit more on the microcontroller side. Basically I want to be be able to display some static ...
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35 views

Minimum wiring for remote ST7735R SPI TFT display

Figure 1. ST7735R 1.8" TFT colour LCD. Image source: eBay. I have an ST7735R working on an Arduino Nano as shown below. Figure 2. Current setup. I want to try mounting the display remotely (< ...
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43 views

DVI interface current requirement

I am using DVI(display visual interface) interface supporting FHD at 60fps. What is the current requirement of DVI interface.
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66 views

How is called this peculiar rounded segment display system? [closed]

There are a number of industrial displays which use 23-segment columns to show semi-rounded alphanumeric characters and simple icons. An example photo: I cannot find anything about this system, like ...
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54 views

Splitting pins on USB-C

I’m new to EE and I have a project I’m working on that has confused me. I have an old display from a laptop that I want to make into a custom 2nd monitor, I bought a driver board for that model ...
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38 views

Units, ten and hundred in a 7-segment display (LOGISIM)

I need to know how to represent in units, ten and hundred on a 7 segment display in logisim. I need to do a college job that is necessary to convert 8 bits from binary to BCD, from this a carry ...
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48 views

increase the maximum brightness for a laptop replacement screen [closed]

I would like to increment the maximum brightness for a laptop replacement screen such as this one How difficult that could be? I haven't bought the screen yet so any hint about the type / model and ...
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2answers
66 views

How to convert pixel map to voltage/angles?

My end goal is trying to get something rendered using lasers and a MEMS scanning mirror. There are not that many resources online for this, but it seems like the basic idea is pretty applicable to ...
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1answer
38 views

Calculate RGB color ratio for a color space given a white point?

I am new to the field of displays and color science. I am trying to calculate RGB color ratio for NTSC color space using D65 white point. Can anyone point me to a good reference on it or how I can do ...
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47 views

SPI MOSI line only hits 1.2V for speeds above 500kHz and below 4MHz (3.3V logic)

I'm trying to drive a ST7789 TFT display (datasheet) with an ATTiny-416, but for some reason SPI fails at speeds above 500kHz. So far I've had these results: 500kHz: pass 666kHz: fail 1MHz: fail ...
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74 views

Should a VFD be turned off when not in use, as much as possible, or should it be left turned on all the time?

I have bought a Noritake itron vacuum fluorescent display, to use in an Arduino project. A menu with settings will be shown on the display, and the user can interact with it by using some buttons. My ...
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1answer
77 views

What is Symbol Clock Frequency?

I came across the term Symbol Clock Frequency in this Intel programmer reference manual (P131). I could not find what the symbol clock frequency actually is in the manual or online and thought it ...
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82 views

Vacuum Fluorescent Display: What are the benefits of an AC filament driver instead of DC?

Question is already in the title: What is/are the benefit(s) of an AC filament driver instead of DC for VFD displays? It works with DC so why to invest in an AC driver? Anyone?
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3answers
102 views

Why are graphic displays still so expensive? [closed]

As a new electronics enthusiast, I've been able to score a lot of components for very cheap, ranging from beefy MCUs in the 10$ ballpark to heaps of ICs for sub-dollar prices. However, buying a coffee-...
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1answer
98 views

Connecting display to arduino [closed]

So i've been googling displays for the Arduino, and they are all usually small or the wrong shape, but they all seam to have GPIO connectors in the back (shields) that connect directly to the Arduino. ...
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1answer
45 views

Displays used in clocks - use with Arduino/ESP32/PIC [closed]

I'm working on a project with a micrcontroller and I need a low-power display similar to something shown above. Does anyone know what these particular displays are called and whether or not there ...
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1answer
41 views

How would you connect a LVDS display to a laptop motherboard supporting natively a different display?

I'm planning a project of building a 4:3 laptop based on existing (modern) components. As 4:3 displays are not manufactured anymore the idea is to take one from a old laptop, like a thinkpad T60. Then ...
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34 views

2 Digit Integer Display in Proteus

I have a homework which I am working on right now. Design a counter that counts 0 4 6 8 12 14 0... (mod6) and when to counter shows 14 it is going to stop and wait for 3 minutes. After 3 minutes ...
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35 views

How to connect generic smartphone LCD screen to take HDMI input from e.g. laptop?

For a certain project that has a specific screen size requirement, I want to use a phone-sized screen (6") to take HDMI from a laptop. Here is an example product: https://www.amazon.ca/Digitizer-...
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1answer
72 views

Can you get “raw” TFT display panels where you drive the gate and drain lines directly?

I am learning about different display types and how I might interface them with raw electronic components, e.g., TTL chips, op amps, function generators for scan line sawtooth, etc. CRT raster is ...
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27 views

How do I connect display to board

I’m experimenting when some OLED displays similar to this and here’s the data sheet. My question is how do I connect the display to the PCB? I’m unfamiliar with the flat ribbon type cable and how to ...
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2answers
83 views

Efficiently driving 6 LEDs in parallel

I have a display that has six white LEDs in parallel (common anode) as backlight. The LEDs' forward voltage is 3.2V, the current per LED is 20mA, so 120mA in total. The available voltages in the ...
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3answers
201 views

Reading info from an LCD display

OK, so I've quite recently stepped in to the world of Arduino, and I seem to get the "overall" view of it. But I have a long way to go before I'm putting "Expert" on my card... :smiley-confuse: So ...
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1answer
75 views

Setting HSYNC and VSYNC registers

I am using the FT801 (datasheet) to drive a Newhaven 4.3" TFT display (datasheet). The TFT datasheet specifies the normal timing parameters (hsync/vsync peroid, front porch, back porch) on page 6. ...
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17 views

Disabling menus on MSO2024B

The Tektronix MSO2024B oscilloscope has annoying menus that continually pop up when you adjust the scale , time base, or any other setting on the scope that you need to remove (by clicking waveform ...
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1answer
42 views

Use a decoder or direct address?

I am designing a RGB LED matrix of 1:4 scan 16x32 pixels As it is 1:4 I have 2 options Option A: Use A,B,C,D pins direct address to control the display or Option B: Use A,B pins only and use a ...
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34 views

What display interfaces do automotive screens use?

For example the screens inside tesla cars, I first think of HDMI, many high end embedded processor boards come with HDMI outputs, but is this connector found in actual mass production or industrial ...
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1answer
78 views

SSD1306 128x32 OLED Initialization problem

I'm trying to run the SSD1306 128x32 on a NUCLEO board. But I can't get the thing to properly initialize. This is my initialization sequence. ''' ...
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1answer
40 views

Controller for HDMI to 30-pin display connector converter

I need to design a circuit for HDMI to a 30-pin eDP adapter. Do I need to use some high-speed microcontroller that takes the signal from HDMI or forwards it to the eDP connector or is there some chip ...
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1answer
221 views

Analyze protocol used for Futaba VFD display, 3 data pins

I take apart a Samsung SMT-C7140 HD Unit (made obsolete by cable company, a shame) and found a nice display that I could probably reuse. It is a Futaba GL07-00006A (13-BT-246GINK). I tried to find the ...
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1answer
68 views

what kind of display technology is this?

There is some kind of backlit display in the product markets which is most likely displaying behind the plastic. I don't know if this is related to LCD or electronic technology or maybe some kind of ...
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What is a training pattern ? How does it lock the CR Clock

This is regarding the Display port ( Section 3.5.1.3) How sending the D10.2 characters lock the Clock recovery circuit in the Display port during the link training sequence ?
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21 views

What is AUX CH handshake in Display port

In the section 2.5.3.3 Link Initialization through Link Training "There is another exception for a box-to-box connection. When DisplayPort Source Device is resuming the transmission, the Source ...
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1answer
25 views

Do we need to send HSync, Vsync, HFP, VFP, HACTIVE in the Display port

On going through the display port specification, in the main stream packet structure I see only the pixels getting packed between blanking start and blanking end. Don't we need to send HFP, HBP, Hsync,...
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1answer
82 views

What is inter-lane skew insertion in display port

I am reading the display port specification facing some issue in understanding some terminology 1. What is inter lane clock skew 2. In the fig 2.8 what is bus steering ?
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35 views

What is the difference between 960RGB and 1920RGB?

In MIPI DSI display resolution, what is the difference between "960RGB * 1920" and "1920RGB * 960"?
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133 views

Interfacing a MIPI DSI dislay

I'm designing an interface board to connect a MIPI DSI LCD screen to an RPi. The screen is a KWH070KQ40-C08 (link to pdf), but the datasheet isn't quite clear and I ...
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1answer
91 views

Can I use the 1.8 inch TFT LCD SD slot for other purposes other than displaying images on the display?

Can I use the 1.8 inch TFT LCD SD slot for other purposes other than displaying images on the display? For example, storing text files on that SD card (that's on the display's SD slot)? Can I use that ...
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1answer
54 views

How to display 20 2-digits numbers?

I'm working on something where i need to display 20 independent 2-digit numbers that are located in different places. In current prototype there are 20 extruded in plastic numbers with led backlight. ...
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1answer
46 views

What system would I need if I want to store large amounts of text data and be able to control a TFT LCD display? [closed]

My goal is to build an electronics project where I can store large amounts of text data (books) where I want to display that text on a TFT-LCD display. Right now, I have my display hooked up to an ...
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35 views

How to display Keyboard's binary to Digital waveform

How can I display to a monitor a digital waveform of any key when pressed in a keyboard? I was thinking to use an arduino or a raspberry. For example, when I press the small letter 'a' on a keyboard (...
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1answer
120 views

What is wrong with this LCD backlight boost converter circuit

I have been working with a dev board with the LCD backlight circuit shown below. The boost converted used is the TPS61041. On page 18 of the datasheet, there is an example of the backlight circuit ...
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2answers
85 views

How to wire 0.91/0.86 inch display to i2c?

I have a 0.91 inch display with a 4 pin I2C connection. I then realised that I needed to use a 0.86 inch display with the connector in the above image. I have searched on google on this but nothing ...

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