Questions tagged [hdmi]

HDMI (High-Definition Multimedia Interface) is a digital audio/video interface.

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60 views

HDMI cable lost colors

I accidentally bent one plug on one side of an HDMI cable and, after taking the plug apart and straightening everything out as much as possible (after which the only apparent structural oddity is that ...
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does the order at which HDMI differential signals should be connected matter?

I have 8 DDI (Digital Display Interface) signals that come out of the CPU with a certain numbering from 0 to 3. I want to connect these signals to HDMI connector. I was wondering if there is an ...
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29 views

Separating power from data micro USB to HDMI

I have a camera which both draws power and sends its data through a battery pack to a custom monitor. The monitor also draws power as well as receives the camera data through the battery pack. (Both ...
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35 views

How to interface TMDS signal with optical tranceivers at low cost?

Not like this which is about protocol, this is about physical. The HDMI2.0 (18Gbps) fiber optic HDMI cables on market seems to be "cheap", like<$100. Although optic fibers are very cheap ...
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2answers
37 views

HDMI for Jetson Nano contradictions in guides

For my drone, I want to develop a custom Jetson carrier board with minimal required interfaces. For quick debugging, I would like to add an HDMI port on the PCB. However, I’m not familiar with HDMI ...
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71 views

How to make a HDMI signal be identified as HDMI instead of DVI?

I am experimenting with the HDMI port of an ULX3S FPGA board. I have been able to properly generate DVI signals with a resolution of 800x600 and framerate of 60 Hz. I am now trying generate actual ...
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1answer
59 views

Adding HDMI To A USB Type-C Hub Design

I've been working on this design for a client for a little while now. I can't go into full specifics on it but the basic design is a USB hub. The IC I picked at the time met the design requirements ...
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2answers
55 views

Can an HDMI input marked “ARC” be used for ordinary video? [closed]

If a television has one of its HDMI inputs marked "ARC" can I use that input for regular video input?
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1answer
91 views

Car Head Unit LCD LVDS to HDMI

I've recently picked up a head unit for my car and I am trying to get a HDMI signal to it. I've taken it apart and had a look at the hardware, and it seems to be using a single ribbon cable to drive ...
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1answer
73 views

HDMI color correction using Arduino or other device. Is this possible?

I have a laptop display that does not come with color correction software available. I'm currently using it as a monitor to play some PS4 games on it but there are some problems with colors. I ...
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1answer
194 views

What is the best method to transmit a DVI-D video signal from a FPGA?

I need to transmit a video signal from a FPGA. It will be better if this signal is some kind of standard protocol like DVI-D. There is an article that proposes to use LVDS transmitters for TMDS lines. ...
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1answer
63 views

How can you split HDMI 1.4b control signals to two displays?

I have been tasked to implement an HDMI splitter on a PCB along with other interface connections. The intent would be to utilize one built in display and have the option of a second plug-in display ...
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100 views

Why did a hot/neutral reverse lead to an HDMI cable shocking me?

I recently set up a new TV/home theater system for my dad. The TV had 3 HDMI devices plugged into it. I plugged a 4th HDMI cable into the TV, and as I reached for the opposite end of the cable with ...
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2answers
65 views

Any physical barrier to read an HDMI input?

I'm considering coding a software that would read data sent from a device (game console, computer, ...) via HDMI. The program would then be able to display the shared content inside a window, which ...
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1answer
39 views

Best cable to carry 3 DP (differential pairs), power, ground and 4 signals

i need to carry the signals from a Raspberry compute module to a camera module and vice versa. Since I need to place the camera around 4 foot away from the microComputer, and i want the connection to ...
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2answers
52 views

Why is retimer circuit provided for HDMI TX lines?

I am exploring a Zynq ultrascale+MPSoC design. While looking at the reference design of XCZU9FFVB1156 SOC evaluation board, in the HDMI interface there is a retimer IC in the transmitter side of Bank ...
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3answers
53 views

Use SFP modules for HDMI or Dp TMDS line

I just wonder if it's possibile to take four SFP modules and connect them dirrectly to TMDS lines of HDMI output and send such signal via four fiber to other similar end? Is it doable?
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1answer
52 views

Help using usb c to power display

Here is a bad diagram of a project I’m working on. In a beginner to EE and this stuff. I have a laptop display connected to a controller board I got on eBay. It has a input of hdmi and a dc power jack ...
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3answers
199 views

Merging two different HDMI cables

I have two brands of broken HDMI cables that I need to join to make them longer. Can't join them by color, because they are completely different. Plus, one of the cables has all the wires, the other ...
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1answer
45 views

HDMI Video to RCA Audio [closed]

Some 20 years ago I created an audiovisual art installation, connecting RCA Video output from a TV set to a HiFi system's audio-in, just plain via cable, in order to "hear" the video signal. ...
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1answer
551 views

HDMI cable sparks and shocked me [closed]

I just owned a desktop PC and as display I connected my TV through HDMI cable. Today I changed the HDMI cable to one that can handle 4K resolutions. So I disconnected the old HDMI cable and then with ...
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1answer
75 views

Help identify this SMD oscillator

This oscillator provides clock to an FPGA which powers the ultrahdmi mod for an N64 (https://www.retrorgb.com/ultrahdmi.html). It's clearly marked A03ZZ 1414 Clock output is diametrically opposite pin ...
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96 views

I accidentally bought an HDMI (male) to VGA (male) cable that isn't an adapter or converter of any sort. Does this product have any value? [closed]

I have a laptop with an HDMI port. I have a monitor with a VGA port. I wanted to connect the two. The website I bought this cable from labeled it as an 'adapter' so I assumed it would do the ...
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1answer
126 views

How can I prevent HDMI 5V (55mA) from entering a circuit?

I have a circuit which uses a camera with HDMI out and a HDMI to AV converter, as well as some other 5V components. The issue I have is that when the main 5V power source is off, but the camera is ...
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1answer
66 views

Control two different DPDT circuits with one DPDT switch

I have a HDMI switch (pictured below) and a USB 2.0 Switch both have dual inputs and a single output, with no external power input. Both from what I can see are switched via DPDT switch. What I want ...
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1answer
39 views

TFP401: 24-bit TFP401 to drive an 18-bit LCD panel, possible?

We would like to use this LCD panel as it matches customer dimensions perfectly: https://www.digikey.com/product-detail/en/sharp-microelectronics/LS037V7DW03A/425-2871-ND/4862435 This display has 6-...
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45 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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2answers
59 views

Why do LED/OLED HD and UHD displays have “global refresh rates”?

What is the benefit to scanning vs. individually addressing and updating lines or pixels or screen areas? Is there a standard interface to the majority of HD or UHD displays that allows the ...
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36 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
60 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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2answers
3k views

Routing power and HDMI signal into usb type-c for DIY computer monitor

I am starting a project to build a DIY monitor. I have a spare lcd panel (model # LP156WF6) taken out of a laptop. I plan on buying a controller board for it and building it into a homemade enclosure. ...
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2answers
856 views

HDMI Cable interfering with mobile phone network

Just had a "spectrum engineering officer" from OFCOM (the UK's communications regulator) visit our office investigating alleged interference from our building with a local cell phone tower. After ...
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76 views

Is it possible for an HDMI cable to be “worn in”?

I have an HDMI cable running thirty feet between my computer and a TV. I've had various problems with the screen flashing, stuttering, etcetera, due to the signal not being strong enough to carry a 4K ...
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1answer
68 views

Fullsize HDMI vs microHDMI, electrical considerations

I'm going to use an HDMI cable in an industrial setting to connect a screen to a Raspberry Pi. We are considering using the Pi 4 instead of the Pi 3 which we have been using earlier. The Pi 4 has ...
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1answer
72 views

Need help identifying solder point, Is it ethernet, usb, what is it

My end goal is to completely rewrite the flimware to create a super secure system. So what I have so far, I have a hdex0016m1 with 2 confirmed uart ports one in use and one nothing was currently going ...
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114 views

HDMI Development: What Would Cause Thin Pink Lines?

I recently designed a board which produces an HDMI output for an oscilloscope so it is viewable on an external monitor. My prototypes seemed to work just fine with one or two mod wires. However, after ...
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1answer
82 views

Why does this USB device draw different currents from different sources?

What would cause a USB device to draw drastically different amounts of current, but still function properly? Background & Research: I purchased a Playstation 2 Graphics port->HDMI converter (...
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1answer
86 views

HDMI splitter @ 4K [closed]

I want to make HDMI splitter which support 4K resolution, I have already found some IC's which are cable for splitting HDMI, but unfortunately non of them supported 4K and they only supported 1080P/...
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1answer
19 views

Which are the physical factors that determine the maximum transportable resolution of a cable (for instance: HDMI)?

Which are the physical and electrical factors that determine that an old generation HDMI can transport for instance 1080p resolution, while a new HDMI (2.0) arrives at 4k? Is it due to a different ...
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3answers
196 views

Split hdmi signal the passive way

I would like to know if it's possible to split a HDMI signal (generate by raspberry pi or equivalent) to a deserializer (TFP401APZP) and to a micro HDMI. I have a source going direct to the TFP and ...
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2answers
229 views

Determining Blanking for HDMI Transmitter

I am working on a project which produces a video output over an HDMI connector. The driver I am using is the Texas Instruments TFP410PAP. The image I am attempting to display is WVGA, 800 x 480 ...
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1answer
866 views

Useless pins in HDMI cable?

In order to connect two small electrical circuits, I needed 17 pins. Because of its availability and compact form, I chose the HDMI connector. The two circuits are connected using an HDMI cable that ...
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1answer
530 views

HDMI/USB Powered Lighting

Alright so a little vague title but here it goes. I'm interested in powering some 5v LED strips with an HDMI cable. I have no idea if this is even possible, I'm lacking knowledge in electronics. My ...
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1answer
46 views

Location for placing ESD components for UHD video

I am implementing ESD protection for HDMI video input. The HDMI video goes through a custom cable of ours, into a connector board attached to our enclosure, through an edge card connector, into our ...
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1answer
438 views

What are the minimum FPGA feature requirements for decoding and encoding 4k60 HDMI signal [closed]

I want to build a prototype device that manages to do the following: Take a HDMI signal with at least 4k resolution at 60fps (for simplicity without DHCP for now,) change a few pixels (say a red ...
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1answer
30 views

Why would sdi to hdmi work, but not when I convert sdi to hdmi to dvi [closed]

I am transmitting video over sdi and converting from sdi to hdmi with an aja Hi5. This works, but if I convert that hdmi output into dvi, the output is either not detected, or constantly connects and ...
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689 views

PCB HDMI high speed routing suggestions on my layout

I would like to get suggestions from all the high speed PCB layout experts on my PCB design. I have a board with HDMI transmitter IC whose output is going to HDMI switch IC. The switch IC also has ...
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1answer
211 views

HDMI Switcher for analogue audio? [closed]

I ordered a 5 to 1 HDMI Switcher with remote. I was looking for the lowest price way to switch analogue audio RCA/3.5mm stereo. At the time I ordered this my decision was based on the availability of ...
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2answers
1k views

How to achieve 100ohm impedance for HDMI differential pair on FR4?

I have a 6 layer FR4 PCB, and want to achieve 100ohm impedance on HDMI differential pairs. I am only using top and bottom layer for differential pairs, and following are my parameters: Trace width= 3....
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1answer
549 views

Treadmill causes nearby electronics glitch

I don't know if it is right place to ask, if not correct/guide me. I recently have built treadmill workstation, where I could walk and work (rather than just sitting). But as soon as I turn on ...