Questions tagged [display]
Questions about LCDs, 7-segment LEDs, E-ink displays, etc.
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Why aren't laptops with transparent displays a thing? [closed]
I just realized that the display on my 2012 Macbook Air is transparent. I had the screen brightness of the built in display on the lowest (off) while using an external monitor, and the sun came ...
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1
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ILI9341 Library for arduino
I'm writing an arduino library for ILI9341 tft display.
I tried to write on the display but nothing appears. Why?
How can I solve the problem ?
My source code:
...
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1
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Simplest display for homemade 8080 based computer-what to use? [closed]
I'm designing a 8080 processor based computer and I want it to be able to at least output something visually.
I have thought about using SMD LED matrix made by myself, but even with the 160 x 120 px ...
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LCD 20x4 Only Show Fist and Third Rows Pixels On
I have a LCD 20x4 display this display works fine but now it shows first and third rows all pixels On. I am using 4MHz crystal oscillator.
That is happen when Vss, Vdd, Vee, RS, RW, E, A and K pins ...
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2
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How is a display with colored cylinders instead of flip-discs / flip-dots called?
The Rossio railway station in Lisbon (Portugal) uses little colored cylinders for parts of their displays (marked in red).
I'd be really interested in getting more information about them, but I ...
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1
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What should I do to unused input parts/features (analog and digital input pins, and power pins) of a video scaler chip?
I am working on a video scaler chip which has multiple inputs (i.e HDMI, DP, VGA) but I only want to use the VGA input. (Choosing another chip with only one input is not an option).
The friendly ...
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3
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1
answer
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Can I operate a 4-lane MIPI DSI Display from just one lane connected?
I was thinking to integrate a MIPI display into a project with a STM32L4R9 processor, which in my package of choice exposess only 1 of it's two MIPI lanes.
The data sheets of all displays I viewed ...
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cost efficient BOM for total 10x12 16 segment (1920 led) display
I've already built a few test prototype for a large(ish) 16-segment display board. I want to use a Arduino of ESP8266 to run it, with external power, and ICs for the Characters.
So far, I've been ...
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1
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XV0 and V0 - what does it stand for?
I'm looking for suitable GLCD, so far I have found the RX12864H, however the datasheet describes a lot of voltages and I'm bit confused.
While the VSS and VDD are clear to me, I have no clue what do ...
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AMOLED display vs. LCD display: Power consumption when displaying white only?
LCD's power consumption only depends on the screen brightness setting, not on the displayed content, unlike AMOLED, where brighter colours (towards white) cause more power consumption, while black ...
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Display Driver for a SHARP LS020B1DD01D LCD [closed]
I am working on a personal project that will feature an LCD panel and push buttons to control the graphical user interface. For the LCD I would like to use the SHARP LS020B1DD01D (for the ...
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1
answer
150
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1.54 e-ink without driver PCB [closed]
I want to know if it is possible to use this raw e-ink display with Arduino. Is it possible to directly connect cables from this ribbon cable to Arduino without any driver PCB and control it with 3 ...
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2
answers
771
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ssd1306 registers
I got confusion while reading datasheet of the OLED display(128x64).I do not understand why to use two column start registers.
https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf
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Why do we need sync pulses in digital (LCD driving) context?
I am studying how to drive LCD TFT display with the microcontroller (STM32F746).
The manual mentions that I have to set up timings for HSYNC, VSYNC, VBP (Vertical Back Porch), VFP (Vertical Front ...
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4
answers
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Understanding memory requirements for an image file
I want to understand the memory requirements for image resource files to be displayed on a 240x400 resolution display.
The display has the following specs:
It supports upto 18 bits color depth and ...
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1
answer
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How do LCD screens repair themselves?
Hey, electronics people:
A few months ago, I cleaned a spot on an LCD flat screen. Whatever it was, it was stuck on there pretty good and I guess I pushed down on it too hard (actually wasn't hard at ...
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Question about how the circuit of TV display works
I have a question about how the circuit of TV display works. Does current flow through the gate lines (horizontal lines)?
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Does parasitic capacitance increase the load value of electrodes?
I'm reading Samsung Display's patent about a display notch. In this patent, the inventors say that providing a parasitic capacitance to scan lines increases their load values. Can anyone tell me why?
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Pinouts of 4-digit Seven Segment Display! [duplicate]
I have a display as in photo I sent you. But it has no label so I can't get data sheet. It has seven pins only. How to know its pin configurations? Please help me.
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Do HDMI/DVI and DisplayPort transfer only differences or full frames?
Let's assume I have a static computer desktop on my external display that is attached by HDMI (or equivalently, it could be attached by DVI, as DVI and HDMI are compatible). The 60Hz picture doesn't ...
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3
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1
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How to create measurement points on a PCB for MIPI lane diagnostics?
I am looking for ways to test specifically MIPI DSI lane signal strength (because I am kind of pushing the envelope on the trace length and width), and am happy to add test points to the PCB design. I ...
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4
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Why could early displays not show white colours? [closed]
They were usually seen using green or orange text, but apparently because white was not possible for some reason?
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2
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unidentifiable phone component [closed]
I've been having a phone display problem which makes the display unreadable as seen in the images, but still usable (the top of the screen works, so it probably is a hardware problem).
I did some ...
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2
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Ghosting on 7 segment display
I have an EEPROM (AT28C64B) multiplexed and connected to 3 seven segment displays,
I did so using a tutorial online from ben eater https://www.youtube.com/watch?v=dLh1n2dErzE&t=300s
Sorry for ...
4
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3
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How to safely insulate the Power PCB of a display computer monitor?
CONTEXT
The other day I was checking the heat coming off an aluminium heatsink on the power PCB of an eizo EV line led display monitor. It was okay, not too hot, just warm and tad bit hot. When I ...
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How can I design a Caesar cipher encrypter and decrypter without using Non-programmable circuit components?
My device should be able to take an input from A-Z and another input to from 0-25 and finally a Encrypt or Decrypt option. Currently I have given A a code of 0000, B 0001... so on and the output will ...
2
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2
answers
130
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How to display high frequency signals on a small display?
I'm working on a project to build an oscilloscope using the Arduino Mega2560. I've built the system using an 128x160 display, and I'm having difficulty showing a range of frequencies on the display.
...
user160063
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What could one do with a 4 BIT computer made out of discrete logic gates? [closed]
I want to manually program the 4 bit computer . (Without another computer). I want it to display a message on a LCD display. Let's say a Hd44780 display or a Nokia display. Have a nice day.
Here ...
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3
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Seven Segment display output problem
I am trying to come up with a circuit using logic gates to drive a seven segment display.
I have a circuit with a BCD output (A, B, C, D) and need to convert this so that when any one of nine ...
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507
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VGA Output for 640 x 360 (16:9) Display for LCD monitor [closed]
I'm currently designing a TTL-based device to output VGA signals to a 16:9 aspect ratio LCD Monitor with a frame rate of 60 Hz. I hove mostly been referring to this question on how the VGA protocol ...
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2
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Video scaling vs Display scaling
I am going to start a project in FPGA and "graphical screen" scaling. I am still in the "reading-the-material-phase".
Are there any differences between video-scaling and display(e.g. Windows Desktop)-...
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Testing a Display [closed]
Currently working on a design project for school where a display is needed.
I need help figuring out what parts I need to split the 10 wire ribbon cable that comes of the LCD into 10 jumper cable to ...
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2
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Which things should I have in mind when choosing LED backlight frequency in range 10 kHz to 100 kHz?
So I have a display which has an integrated LED driver for backlight. The driver expects PWM input with frequency between 10 kHz and 100 kHz. The only other information I have are the maximum voltage ...
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How to measure/show MIPI-DSI 4 lane signals on DSO/oscilloscope?
I want to measure/show the MIPI-DSI 4 lane signals on an oscilloscope. There is MIPI type display has been connected with LVDS-to-MIPI converter. I want to measure the signals at the output side of ...
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4-20 mA loop powered ADC with display
I was asked to design a display that is loop powered and sits between the receiver and the transducer. I was wondering what's the best way to source power from the loop to power my electronics without ...
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1
answer
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Connecting multiple 1inch lcd displays to only one MCU
i'd need to connect multiple very small (1inch if not slightly more) square lcd displays to only one controller unit.
I searched for it but being not an electrical engineer it seems i lack some ...
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1
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What kind of display connector is this?
I'm looking into using this display for a small project I'm working on, but I'm not positive what kind of connector it has:
http://www.alibaba.com/product-detail/2-4inch-transparent-oled-screen-...
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How do I wire this 3 way switch?
I have this switch it goes 3 ways, I am a noob and just started learning about electronics. I have a small oled Display connected to my nodemcu which is displaying information. The middle switch is ...
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What is this display connection?
This is a 40 pin display connector that was found on a mass promotion video player mailed to a house. I disassembled it and I would like to use the display for a project.
The display has the model ...
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FPGA - Injecting an overlay into an HDMI stream
I am looking to use an FPGA in line with a non-encrypted HDMI stream in order to inject an overlay to the display. The minimum resolution and frame rate I would like to support is 1080p at 60Hz.
My ...
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Controlling a 4 lane DSI display from RasPi 3
I have a DSI display which runs on 3 data lanes. Can this be controlled from a Raspberry Pi 3 which has a DSI interface that only supports 2 lanes? Looking for a yes or no with a reason. If you have ...
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Connecting an Arduino oled display without a breadboard
I am new to Arduino and over all electrical and computer engineering. I need some help with connecting an OLED display to my Arduino. The problem is, I do not currently have a breadboard. If I need a ...
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How does a microcontroller drive an LCD?
I'm not a professional so I'm looking towards a simple answer to this question.
If you want to turn an LED on using a microcontroller, then you have to assign a pin on the microcontroller to the LED....
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What type of cable/connector is this 30 PIN LCD display cable?
I need help identifying the type of cable this is. It is used to connect an LCD display panel to a processor board. The width of each connector is about 15 mm and each end attaches to a 30 PIN ...
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FPGA based VGA controller to drive PC monitor
I have implemented a VGA controller in FPGA, for 800x600 resolution @60Hz. Can I use it to drive a PC monitor ? In the PC's monitor resolution settings, it's seen that it supports multiple resolution ...
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SRAM vs SDRAM as display buffer
I'm in a bit of a dilemma and I'm wondering if anybody here can help me.
For a display application in need to use a framebuffer which is at least 2Mbytes.This framebuffer is used to drive a 800x480 ...
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0
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How do I drive this display?
I would like to know how to drive this little e-Ink display. The company supplies a demo kit and a sort of "adaptor circuit" (basically a breakout board with a few capacitors, which allows one to use ...
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Identifying a SMD component?
anyone has seen the component in picture?
I have searched google but no results.
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2
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What's the "accepted" way of driving LOTS of 2-digit, 16-segment, common-cathode displays?
I have a project that has 18 of these common-cathode displays, 36 digits in all, organized into three rows of 12 digits. My first version of the project used an Arduino and shift registers to drive ...
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3
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Maximum SPI speed of TFT display
I have a 1.8" TFT color display from Banggood. It's very nice with the vivid colors.
However, the screen refresh is slow. I'm limited by the SPI speed of 1 MHz. It results in an update rate of:
...
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