Skip to main content

Questions tagged [graphics]

The tag has no usage guidance.

Filter by
Sorted by
Tagged with
6 votes
1 answer
220 views

Pi Pico generating YPbPr-like signal for VGA monitor

I would like to generate TED-like signal for VGA monitor input (Analog RGB + H/V-Sync). This is basically 16 pre-defined chroma values with 8 brightness levels applied, encoded as 7 bits: ...
smokku's user avatar
  • 163
1 vote
1 answer
80 views

What kind of displays and processors are used in consumer electronic products (like a coffee machine)? [closed]

I am presently working on the development of a smart kitchen appliance, which will eventually be sold in the market. As part of this project, I need to incorporate a touch display for the operation of ...
santosh kumar's user avatar
6 votes
0 answers
161 views

Vivante video memory size?

I'm using an NXP i.MX 8MP, with Vivante GC7000UL and GC520L GPUs. Using the Etnaviv open source drivers. For the life of me, I can't figure out how much video memory is made available to the GPUs, nor ...
jaskij's user avatar
  • 1,233
4 votes
0 answers
80 views

TFT screen image being squashed and printed twice

I am getting into graphics programming and have come across an odd issue. I am using Microchip's Harmony + Legato platform on a PIC32MZ DA chip for a TFT screen that takes a 24-bit RGB format input ...
jakob's user avatar
  • 462
2 votes
1 answer
283 views

How to extend a connected graphic lines in KiCad 6?

How can I extend or decrease the length of a connected graphic line in the Schematic Editor of KiCad 6? Below is in blue ovals the pictogram and two examples marked. I can remember I could change the ...
Michel Keijzers's user avatar
1 vote
1 answer
247 views

Can run LTDC by circular buffer for easy graph drawing on STM32F7?

In stm32f746G-Discovery, I want to draw moving graph like drawing ADC output on real time. Is it possible to make start address of LTDC buffer shifting in every single new ADC data to having graph ...
mohammadsdtmnd's user avatar
0 votes
4 answers
378 views

Making a graphics card using transistors

Is it possible to make a graphics card using no ICs that uses a VGA cable and outputs, say, 16px by 16px? Or are too many transistors required for it to be realistic? (Too many meaning more than 500.)
user118995's user avatar
2 votes
1 answer
277 views

TMDS chip fails, but direct connection to FPGA works

We've been attempting to do some graphics over HDMI using an FPGA. I've built a board that has two HDMI connections. One of these links the required video lines directly to the FPGA. The second HDMI ...
Oni's user avatar
  • 133
0 votes
1 answer
648 views

How to Identify my TFT LCD Driver Chip

This is one of my TFT LCD which I have no Technical details. How can I find which driver chip they have used? I have previously interfaced TFT based on RA8875 driver. So I Have a basic idea. I have ...
UB_Roy's user avatar
  • 163
1 vote
1 answer
1k views

How to draw sprites using DMA2D with transparency using stm32?

I am using STM32F429I-Discovery board I want to draw sprites on TFT-LCD with transparency on top of background image , I used black color as the transparent color for the images that I want to draw ...
Islam Gamal's user avatar
0 votes
1 answer
122 views

Could a PC consume more power from the plug if it oparates in a colder enviroment?

I have a mining rig (computer using its processing power to calculate hashes in order to eventually be rewarded with cryptocurrency tokens.) The program I use to mine tells me each time the power ...
papajo's user avatar
  • 101
1 vote
2 answers
130 views

MOSFET repair 4901 or 4901NF

I'm from Germany and im not so good in English, please forgive me. I have a little bit idea of electronics but I'm not so sure with this problem. I would like to say beforehand that I have a soldering ...
ToastKiste12's user avatar
0 votes
1 answer
224 views

Why refresh rate is needed in a passive-matrix LCD

In a passive-matrix LCD we have horizontal and vertical conductors. The intersection points are pixels which are cells of liquid crystal molecules. For drawing a frame, we provide the necessary ...
Urooj's user avatar
  • 193
2 votes
1 answer
1k 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?
Noob_Guy's user avatar
  • 443
1 vote
2 answers
589 views

8 bit PC integrated with VGA video card (similar to ben eater project)

I'm thinking about making a project like this one and add a graphics card like that one. Using an EEPROM for the video memory and changing its content setting it in write mode and assigning a value ...
Paa's user avatar
  • 135
0 votes
0 answers
94 views

Resistor, Inductor or something else?

I'm trying to identify a component marked simply as "R". There are two of these on a graphics card I am trying to fix that has a power issue. Thanks for any help...
ptolemy's user avatar
0 votes
1 answer
59 views

Swapping a step down converter

I have a faulty graphics card i am trying to repair, i noticed on the back near the 12v connector that a step down converter in Q501 had a leg missing (right side, second from the bottom) and i am not ...
Moe's user avatar
  • 1
0 votes
0 answers
141 views

What would cause streaking in graphics LCD display?

I am using a 128x64 graphic LCD module that uses either NJU6676 or ST7565P similar to this Zettler module. I am getting vertical streaks as pictured. They appear to be most pronounced when the topmost ...
Bort's user avatar
  • 1,104
0 votes
1 answer
80 views

Which would be cost effective, a display with graphics controller or without graphics controller?

I am working on a touch screen display on stm32. I found some evaluation boards like mikromedia-7-stm32f7 and stm32h753i-eval Mikroelectronica uses the external controller SSD1963, although the MCU ...
yogesh nandurkar's user avatar
3 votes
2 answers
624 views

What does it means that a MCU has support for OpenGL?

I am trying to understand the meaning of when someone says that PowerPC 7410 CPU has support for OpenGL based software. Does it mean that there are any specific instruction in its ISA architecture ...
alt-rose's user avatar
  • 1,479
11 votes
3 answers
5k views

Can it be proven that running a GPU at high temps is bad for the card?

If you continuously run your graphics card at between 80°C and 90°C (176°F and 194°F) is it actually bad for the graphics card? I.e. does it reduce the life of the card? Can this be proven? Or is it ...
Daniel's user avatar
  • 121
1 vote
0 answers
2k views

How to rotate a square on a TFT ILI9486 screen with Arduino

Problem Summary I have a “square” rotating on my 3.5 Inch TFT screen (ILI9486 driver) with dots/circles at each of its 4 corners. It is connected to an Arduino MEGA 2560 There are a few issues with ...
daviegravee's user avatar
34 votes
5 answers
15k views

How do devices like the Game Boy Advance achieve their frame rate?

I've been designing my own handheld gaming device based around an AVR microcontroller and a small OLED display. I started off with a monochrome display 128x64 pixels and can comfortably draw to it at ...
MalphasWats's user avatar
0 votes
2 answers
106 views

is the intel quark capable of running an opencv webcam unity application for linux? [closed]

I built a fairly simple application in Unity that uses a webcam and opencv to overlay graphics in realtime to a user's face. I am looking for a low cost microcontroller/computer to run the ...
mheavers's user avatar
  • 159
1 vote
1 answer
179 views

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 ...
Grzegorz's user avatar
2 votes
1 answer
1k views

So there was an ant that somehow got inside my screen. How do I remove it? [closed]

Wondering if it's possible to remove the LCD screen without damaging it. I noticed there are six black metal thingys at the back of the module that is twisted up holding the LCD in-place, is it safe ...
Rafael Ibasco's user avatar
-2 votes
1 answer
129 views

What kind of software I can use to plot graphics like this? And how is this plotted? [closed]

I am trying to plot the transfer function of a circuit. What kind of software I can use to plot graphics like this, without using circuit simulation software? I would like to understand things ...
Duck's user avatar
  • 847
0 votes
2 answers
367 views

Drawing bitmap fast on ARM Cotex

I'm trying to blit an image with sprites, animated. While drawing the animated sprite, I draw a background before the sprites. With the sprites, the game looks smooth and playable, with the background ...
Andre Ahmed's user avatar
2 votes
1 answer
1k views

Drawing a bitmap using 2D DMA on STMF32F4

I'm trying to draw a bitmap using 2D DMA, so I have the address of the destination which is the front buffer, and then I read a line from the bitmap, blit it using the 2D DMA.. I get scanlines, and ...
Andre Ahmed's user avatar
0 votes
1 answer
2k views

LTDC STMF32 Double buffering problem

I'm trying to do double buffering using the hardware, STMF32492I.. so first I'm initalizing two layers in two different addresses. Then I write to the back buffer, switch the back buffer.. But The ...
Andre Ahmed's user avatar
5 votes
2 answers
1k views

16 bit Graphics Chip [closed]

I am trying to build a 16 bit single board computer based around the 68000 and am wondering if there are any non proprietary 16 bit graphics chips like the Yamaha V9958 with readily available ...
Doihead's user avatar
  • 59
1 vote
2 answers
2k views

How to connect a frame buffer to an LCD monitor through DisplayPort or DVI in an integrated system

I would first like to state that I am primarily a software engineer. While I have spent 14ish hours researching this so far, I apologize in advance if I miss a core concept or use incorrect ...
khislop's user avatar
  • 11
1 vote
2 answers
1k views

Why does the ssd1306 OLED controller have an unusual memory layout?

I've recently ported a driver for the ssd1306 OLED controller. https://cdn-shop.adafruit.com/datasheets/SSD1306.pdf http://www.ebay.co.uk/itm/0-96-inch-128x64-I2C-Interface-White-Color-OLED-Display-...
fadedbee's user avatar
  • 982
64 votes
3 answers
9k views

How does my screen driver handle so much data?

I just did some quick calculations: On my MacBook I have a resolution of 2560x1440 multiplied by 24 Bit for colors we get 11.05MB for a single picture or 663MB per second at 60 fps. I guess there is ...
Felix Crazzolara's user avatar
1 vote
1 answer
792 views

What is the proper way to store data into a frame buffer?

I am trying to plan a graphics processor project that will only render lines. It will use the bresenhmam's line algorithm. After reading on the algorithm, it makes sense how it works to calculate ...
quantum231's user avatar
0 votes
1 answer
3k views

SMD Ceramic capacitor burned [closed]

To begin with i have an AMD Sapphire Radeon R9 270 and it worked fine for a year and a half. I was doing some cleaning on my pc (cleaning the heatsinks and things like that) and when i connected ...
Alexis A. Cuevas's user avatar
6 votes
1 answer
614 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 shutter, ...
Alper91's user avatar
  • 1,313
2 votes
2 answers
757 views

Interfacing with a graphic lcd

I am ordering a graphic lcd NHD‐12864AZ‐FL‐YBW and most of the interface code seems pretty simple. On the datasheet it has the following list of commands I don't understand what is put in the write ...
Markovian8261's user avatar
0 votes
3 answers
1k views

8 bit computer graphics [closed]

I'm working on learning how 8 bit computers work and operate. I know you can make a (tedious) microprocessor with a larg amount of logic gates and such, but how does it read graphics? I know this uses ...
Joe's user avatar
  • 113
0 votes
2 answers
484 views

What tasks does Graphics hardware perform and what steps does it follow to do so

I am not intending to go into high end GPUs here. That is too advanced. What tasks does a basic graphics hardward perform? By basic perhaps we can go back in time and see what it did in the early days ...
quantum231's user avatar