stands for Video Graphics Array and provides a 640x820 screen resolution.

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1
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0answers
65 views

VGA to Ethernet [closed]

I am using VGA to Ethernet Frame grabbers for my job. I need a VGA to Ethernet frame grabber which is like the Epiphan's product on the internet(it can be easily found when searched in the internet). ...
0
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0answers
49 views

Problem in connecting a VGA socket to a LED projector

I am building a mini LED projector. I have obtained the following parts from an old and used projector: 1) RGB LED box: 2) Himax signal processing card: Now, I want to connect a VGA port to ...
3
votes
1answer
257 views

having distorted image in VGA with FPGA board

I'm using spartan 3E-100 CP132 fpga board to display a basic plus image on a monitor. I have tried using 800x600 72 hz and 640x480 60 Hz but I always get a distorted vertical lines. Is it because the ...
0
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1answer
141 views

generating 40 mhz clock from 50 MHz

In VHDL how can I get a clock frequency of 40 MHz if my onboard clock is 50 MHz. I know how to divide the frequency by integers but this case is dividing by 1.25. I am using this for VGA so I think ...
0
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1answer
96 views

generating 40 MHz clock from 50 MHz in VHDL [duplicate]

In VHDL how can I get a clock frequency of 40 MHz if my onboard clock is 50 MHz. I know how to divide the frequency by integers but this case is dividing by 1.25. I am using this for VGA so I think ...
1
vote
1answer
69 views

MPU accessing busy memory

I didn't know whether to place this question here or on stackoverflow, but I finally decided to post it here. I want to build a simple system that would be able to work with basic peripherals (UART, ...
0
votes
1answer
364 views

SCART to VGA adapter - green picture

I want to connect my DVD player which has a SCART output to a computer LCD monitor with VGA input. The DVD player supports the Progressive scan mode. It supports both PAL and NTSC. I've built this ...
3
votes
4answers
170 views

Is quality of VGA Horizontal and Vertical sync Pulse relevant to be able to display on sensitive projectors

I am currently trying to diagnose a VGA problem on hardware A. Hardware A has some trouble sending display to certain projectors (while it is able to send display on most LCD monitors). Hardware B ...
0
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2answers
175 views

VGA driver in VHDL displays only black

Goal & Data I am trying to make a VGA driver on a Spartan 6 (Embedded Micro Mojo board) to display something simple like the french flag on an LCD monitor, in 640x480 8 colors. I live in Europe ...
1
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1answer
91 views

VGA switch 3 in 1 out [closed]

My team and I are going on a software development competition in 1 week. We will demonstrate the software on multiple laptops, but we have only one projector. So we need to be quickly able to switch ...
0
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0answers
33 views

Standard range for monitor gamma?

I'm designing a gamma correction stage on an FPGA that will drive VGA monitors. I looked at the EDID info and saw that the legal values for monitor gamma are between 1 and 3.54: ...
0
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2answers
166 views

VGA repeater/extender circuit

Apparently noone ever needed anything like this on the internet because I was not able to find any example, so I hope this will become the reference question. I need to repeat a vga 800x600 signal up ...
4
votes
1answer
135 views

Can the DS1052E be used for reliable NTSC measurement?

I'm in the market for an oscilloscope. I've read that the infamous DS1052E from Rigol is a great beginner scope due to the price/performance. However, I know I have a lot to learn and simply don't ...
4
votes
1answer
167 views

How does a computer signal via VGA for the monitor to sleep [closed]

Could somebody please explain how a "modern" monitor is told to sleep. I need to know this for a VGA with blue connector, i.e. it has DDC. I've heard that the sync stops. If true, which sync? ...
2
votes
0answers
203 views

How to implement memory mapped IO

I am describing a system in VHDL. This system already contains a processor, a DDR SDRAM controller and a VGA controller. VGA reads pixels from SDRAM (already validated and proven in FPGA). Although ...
2
votes
0answers
145 views

Debugging VGA signal

I have tried to use my Open bench logic sniffer to capture data from a VGA output. I'm pretty sure I understand how the waveform should look, but I not getting consistent data. It feels very shaky to ...
1
vote
2answers
9k views

Soldering a VGA cable - number of wires doesn't match [closed]

I decided to open up a VGA cable which started to produce only red / blue / green colored image. I thought that inside I will find something like shown on this scheme: Instead I found that my VGA ...
6
votes
1answer
502 views

VGA Decoding - Dealing with tolerances

Update: The VGA Simulator is up and running. You can go simulate your own designs or just use the example file to see it working. I also wrote a blog post to help anyone get started using it for ...
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votes
1answer
114 views

How digital video is processed? [closed]

I'm not sure if I'm using the right words, but I would like to learn how digital video works. I have a book that explains how VGA works and how to implement it on FPGA. I would like to know what kind ...
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votes
1answer
542 views

Problem with warnings in Xilinx tools [closed]

I am interfacing a VGA monitor with Spartan 3e kit. I have a problem in the code and I'm getting many warnings, as shown below. Could anyone explain the warnings? ...
2
votes
1answer
2k views

Do-It-Myself KVM?

I have several computers (desktops) in different geographical locations that I want to access remotely. Commercial KVM-over-IP solutions that I found are expensive (more than 200 euros each) and the ...
1
vote
2answers
346 views

16 bit RGB to vga converter circuit

Can anyone please suggest a circuit to convert 16 bit TTL (3.3V) RGB signal to a VGA signal. I used a resistor network, it works but I think some active component is necessary for load matching ...
0
votes
0answers
289 views

Read VGA pixel value from SRAM in VHDL

I'm using a SRAM in order to store a frame that I have to display on screen with the VGA interface. I need to read the pixel value from the SRAM and then send it to the VGA monitor. I have created a ...
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votes
1answer
118 views

I want to connect an HDMI mini out (on my tablet) to a VGA input in a 'smart room' that I teach in-how? [closed]

I want to connect my Asus tablet mimi HDMI to a VGA in a 'smart room' that I teach in. Can I do this so I can show art work, play you tube videos, and recorded music and PDF's on the big screen in the ...
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votes
1answer
109 views

displaying JPEG images [closed]

I want to display images(JPEG) stored in a SD card, I want the output to be VGA so that I can display them in readily available display modules. Any idea on how this can be done?
4
votes
1answer
607 views

Is there an FPGA based vector graphics card project?

I have been messing around with VGA projects as my latest interest. I have a Xilinx Spartan 3E 250K FPGA, which has just barely too little RAM for a full 640x480 frame buffer. So, I'm looking at ...
2
votes
3answers
147 views

Video Controller Design

I'm designing my own computer based on the Zilog Z80. It has 256KiB of static RAM with paging as well as a few megabytes of flash memory. Everything is going along pretty well until * BAM * I hit a ...
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votes
1answer
113 views

Need for a VGA output [closed]

My device must be able to show a simple diagram on a screen of an ordinary computer monitor. I've found display drivers which could do the job, but they seem to be much more sophisticated than I would ...
4
votes
2answers
418 views

Trouble with VGA Controller on CPLD

What I am attempting to do is create a VGA controller from a Lattice MachXO CPLD in Verilog. The Problem I am attempting to display the color red with a resolution of 640x480 @ 60Hz using a 25.175 ...
0
votes
3answers
544 views

Vhdl VGA Problem

I'm doing a fpga project in vhdl for my studies. I'm displaying a dog on the screen that I try to move. That works well for right, left and up but trying to make the dog go down, it moves in a ...
3
votes
2answers
189 views

What impedances do graphics cards expect on H-Sync and V-Sync for VGA monitors?

I have a graphics card for a laptop whose driver kills itself if it runs for longer than two minutes with no external monitor attached. To solve that, I decided to make a sort of dummy plug that would ...
6
votes
3answers
2k views

VGA interfacing with PIC

I'm looking for a way to control a VGA screen with a PIC. External components are OK, so a VGA chip with I2C or SPI or something is okay too. Requirements: Resolution: max 1024x768, no minimum ...
5
votes
4answers
718 views

Can we attach LED to VGA port and make it light up, the same way we do in Parallel Port?

I just connected an LED to a parallel port in my PC and controlled it successfully through inpout32.dll I was wondering, if it was possible to do the same with the VGA port. Where can I find ...
3
votes
2answers
341 views

Custom VGA output : what resolutions are expected to work?

I am thinking of creating a device which displays graphics and animation to generic computer display with 16:9 aspect ratio via analog interface (D-sub). The question is which resolutions are ...
2
votes
2answers
859 views

male-male VGA cable wiring

I need to build a VGA cable (assemble connectors to wire). I need a male-male cable. Is its wiring straight or cross? (should i connect 1-1,2-2,... or something else) Thanks
6
votes
2answers
284 views

Does VGA have to be drawn at 60hz?

I'm wanting to generate a VGA signal hopefully as painlessly as possible. I have an odd question though. Everywhere I see that VGA requires a 25MHz clock for the sync signals. Is it possible to ...
2
votes
1answer
1k views

image distortion generating VGA signal on STM32 f4 using DMA

I'm trying to build a video generator using the STM32f4 (168MHz, using discovery board) + R ladder DAC to the VGA signal. The idea is not to be based on a framebuffer (this would limit the resolution ...
3
votes
1answer
2k views

What is the acceptable current draw on pin #9 on a VGA connector?

I'm trying to appropriate the 5v that comes into an LCD monitor on pin #9 of a VGA connector to power a microcontroller with some sensors, and LEDs. I've found a discussion on this topic on a ...
4
votes
2answers
805 views

How to make a VGA monitor display a white screen at all time?

I am hacking around with an old (CRT) VGA monitor. Trying to make an oscilloscope. What I want is to make the monitor display a blank white screen at all time, when the power is connected of course. ...
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votes
1answer
715 views

Use laptops monitor on another computer [closed]

I just bought a new pc, but i dont have a monitor yet. Is it posible to use my old laptops (omnibook 3000) monitor with VGA cable? Added: Options Old PC working as a PC - just connect somehow - ...
6
votes
3answers
5k views

How to utilize HDMI port on FPGA (basic)

Two questions. I have a Xilinx Spartan 6 FPGA which only has HDMI ins and outs. Is there some sort of guide or pre-written code that I can use to start sending images to the screen? I have no idea ...
5
votes
1answer
461 views

Other name for VGA socket?

I need a VGA socket for my project (preferably PCB mounted but that's not reevent probably). But I can't find such a thing at any of my usual suppliers. I presume they have some other name I need to ...
4
votes
3answers
1k views

What's the simplest way to generate a VGA signal for a totally white screen? Preferably with an AVR MCU

I'd like to make a simple board to plugin a LCD monitor and get a blank white screen. The idea is to use any monitor as a makeshift light table. I have a preference for 8-bit AVR micros since I have a ...
5
votes
2answers
4k views

FPGA VGA Buffer. How to read and write?

I have an Altera DE2 board and trying to draw sprites. I am having some trouble implementing a screen buffer. I have a display entity that at a 25 MHZ rate outputs pixels for vga display. I was ...
1
vote
0answers
756 views

NTSC -> ADC -> USB. A video digitzer circuit

I'm working on a project that ultimately needs to incorporate an analog video camera input, digitizing it and spitting it out a USB port as an MPEG stream. My general aim is for roughly a VGA ...
6
votes
5answers
2k views

VGA to HDMI converter

I'm making a little project purely as a hobby using a small FPGA breakout board. I'm outputting VGA video which works fine, but would like HDMI output instead so I can connect to a television that has ...
7
votes
5answers
438 views

Spacewar on microcontroller

First of all I need to say that I have almost no experience with programming microcontrollers (aside for some Arduino stuff). I have worked with C (and x86 ASM) on some low level projects (think of ...
1
vote
3answers
689 views

RAM device / timings for small VGA project

For a personal hobby project I'm looking to make a small vga display using an fpga. I was thinking of making the display 640x480 pixels with one byte colour per pixel at 60hz (I believe those timings ...
2
votes
5answers
815 views

Is it safe to assume that all pins in a standard VGA cable are wired?

I am currently in the process of designing a custom arcade-style joystick console for use with emulators on my PC. My design separates each joystick console from a single keyboard-encoder "hub" such ...
13
votes
2answers
931 views

What are 'return' pins?

On a VGA connector, there are numerous 'ground' pins. Three of these are Red return, Green return and Blue return; But why does each color component have its own ground pin?