Questions tagged [hdmi]
HDMI (High-Definition Multimedia Interface) is a digital audio/video interface.
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FPGA HDMI Video Lag tester doesn't display on FPV goggles
I've forked this video lag tester Verilog project, which is itself a port of the time-sleuth project to the GOWIN Tang 4K FPGA. My intention is to build something that can test the input lag on FPV ...
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What is needed for a 512Kb HDMI EDID EEPROM? (re: 512KB IC2 EEPROM) [closed]
I'm trying to build an HDMI "dummy" plug that simulates a plugged-in monitor (to trick GPUs into thinking a monitor is plugged in).
Many of these "dummy" adapters exist and are ...
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How can I confirm the presence of an HDMI signal with a slow scope?
Per the title, I'm trying to troubleshoot a circuit and confirm if a device is putting out an HDMI signal but I only have access to "slow" (<=200MHz) oscilloscopes.
I don't need to know ...
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TV motherboard / LDVS and universal LED panel
On eBay you can find hundreds of Samsung (but also LG, Philips, etc.) Smart TV motherboards (see e.g. here https://www.ebay.com/itm/132373029756).
What I would like is to have more of those ...
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HDMI > eDP 1.2 converter
I have a spare 15.6 laptop screen and want to turn it into a small portable monitor. By portable I mean that it should not require to be plugged into an electric socket. The screen itself only needs 3....
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Audio noise/feedback through speakers from HDMI (DIY projector)
I have built a projector and it's mostly working except I'm having issues with speaker noise, I'm not an expert with this sort of thing at all so I'll try my best to explain.
I have 12 V DC coming ...
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HDMI CEC connections and ground reference
I'm trying to work with the HDMI-CEC bus and a STM32 microcontroller (currently on a Nucleo-144 board).
I'm connecting a cut HDMI cable with some Dupont wires soldered on it, to interface to the ...
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MIPI DSI touch screen compatibility with Orange Pi 5B
TD;DR
Is DSI and MIPI D-PHY TX 4 lane the same thing?
I came across a "Waveshare 7.9 touch display for Raspberry Pi" which has two options, HDMI and DSI.
As I can see from Orange Pi's ...
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20-pin LVDS (DF14-20P) to USB/HDMI for post-processing?
I am looking to convert a 20-pin LVDS (DF14-20P) signal from a thermal imager to another format (i.e. HDMI) so that I can do post-processing on a Raspberry Pi, OAK-Som, or similar.
Everything I can ...
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What are HDMI pins 13, 14 and 17 actually defined?
According to wikipedia, HDMI pins 13, 14 and 17 are:
13: CEC.
14: Reserved (HDMI 1.0–1.3a), Utility/HEAC+ (HDMI 1.4+, optional, HDMI Ethernet Channel (HEC) and Audio Return Channel (ARC)).
17: Ground ...
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Which parameters should be compared to to replace N-MOSFETS with different package but with same pin functionality?
Since NTZD3154N is used a lot in my design, and I have BSS138PS only for used for one circuit, I want to replace BSS138PS with NTZD3154N in the following DP++ Auxiliary Conversion Block:
Note: This ...
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EDID emulation in HDMI and DisplayPort, is DisplayPort really more difficult?
I've been doing a lot research on EDID and HDMI and DisplayPort and I have a question about the relative difficulty of always-on EDID Emulation between the two specs.
With HDMI, almost every Matrix ...
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HDMI: What is the maximum acceptable differential impedance variation and for which length
Imagine I have a HDMI bus with differential impedance 100 Ohm and length 10cm
Imagine that for a segment of length "L" there is an impedance variation of "DELTA"
Question: in order ...
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Custom TFP401 based display color/frame issues
We have just designed a board using a TFP401A to decode an HDMI signal into a 24 bit parellel RGB signal that is then sent to a standard 50-pin TFT display module which uses a 24-bit parallel RGB bus. ...
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Could I use an RF modulator to broadcast signals from a Raspberry Pi to an analog tv over the air without the use of a coaxial cable?
"Long" story, but I connected a digital-to-analog converter (for OTA TV) to my mom's 1984 Samsung CRT, and now I'm wondering, could I broadcast (on low power, of course) HDMI outputs to a TV ...
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How much (if at all) does an HDMI connector affect the signal?
I am designing a multimedia room with a few goals in mind:
4-person squad can all play on separate screens (since that is how most games are built)
All 4 separate screens can play the same image from ...
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Cheap hack works, but I need a VGA cable plugged in [closed]
My laptop headphone jack died. I purchased an HDMI to VGA dongle with an audio out port and it works, but only when I have a VGA cable plugged into the dongle. Why? Can I short out two pins with a ...
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AMD R6000 CPU - DisplayPort dual-mode feature
In the past I have designed a platform that used an Intel Tiger Lake (Gen 11) CPU and now I have a new project that uses the AMD R6000 series.
Different from Intel, the design of the DP++ feature ...
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Is it possible to route DPs to HDMI from the HD3SS215 without using vias?
I'm working with the HD3SS215 and have found that while the datasheet does have a typical application for HDMI (9.2.2, p19), it is difficult to route to that connector from the IC; the pinout from the ...
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Soldering solution for HDMI connector
I have an HDMI connector that is clamped to the PCB, we are still hand soldering this position but often bridge or deflection occurs.
Can you give us any advice on how to auto solder this position?
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Is it safe to connect HDMI from a 110 V device with a 220 V device? [closed]
I have a PC powered by a 110 V outlet (220 V-110 V step-down transformer) and a monitor powered by a 220 V outlet. Would it be safe to output my display to the monitor via HDMI?
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Converting an HDMI signal into USB-A
I am working on a project which involves an active HDMI<-->USB-A converter. I may not be searching for the right thing, but I cannot find a circuit to perform this anywhere. I know it is ...
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Repair HDMI HPD and EDID failure
This is a photo of an old video board from a Dell display showing "No Cable", and "No Signal" OSD messages but working correctly when video is force-enabled and EDID is supplied ...
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HDMI ground loop from gaming PC to AVR
I have a ground loop from my HDMI from gaming PC to AVR. It's very annoying.
Aside from getting an expensive ground loop isolation transformer for 1000 W, is there any other way?
Is there an HDMI ...
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How does a HDMI source detect whether the sink is native HDMI or connected by a HDMI-DVI adapter?
Over the years of using HDMI monitors, I always had some trouble with the RGB color range, full (0-255) vs limited (16-235).
The HDMI Spec v1.3a says, in section 6.6 (page 95, PDF page 111):
Black ...
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HDMI audio pin-out
I have two HDMI outputs, one of them has only video, the other only sound. What I want to do is combine two HDMI cables and get the video and sound at the same time with only one HDMI cable. But I am ...
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What is the correct behavior of the HDMI HPD signal?
Can anybody explain the correct behavior the HDMI HPD (Hot Plug Detect) signal?
For example, I've disassembled an HDMI coupler and connected a few wires to the +5V/HPD/GND (shell) and here is what I'm ...
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What's wrong with level shifter output? [closed]
I was trying to understand what wrong about the output of the level shifter, the level shifter is part of my circuit that I trying to bring-up and encountered difficulty in this issue.
This is the ...
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HDMI debug issues over wireless
I have designed board that carrier transmitter HDMI module.
There are TX side and RX side, the board works well except one issue that which takes a lot of sleepless days from me.
this is the ...
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HDMI: Can a computer still detect a monitor properly if some of the TDMS pins/wires are damaged? [closed]
Can a faulty HDMI-cable with damaged TDMS pins/wires still work to the extent that the computer can still detect the monitor, but the monitor just will not display anything (except for no signal)?
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What is is the maximum number of consecutive zeros/ones in a TMDS-encoded bitstream?
If I understand correctly, TMDS is similar to the 8b/10b encoding. A compliant 8b/10b encoder will not output more than five ones or zeros in a row, but does a similar property holds true for TMDS?
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How can I fake HDMI signal? [closed]
Is it possible to build a circuit to send power to an hdmi-in port on a repurposed tv power/logic board to make the “unit/logic board” see it as a signal and not turn off? I’m making a video key light ...
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How can I drive an LP101WX2 LCD panel with the Chalkboard Electronics HDMI-dualLDVDS converter?
I am trying to drive an LP101WX2 panel with the Chalkboard Electronics HDMI-dualLDVDS converter but all I am getting is a black screen.
I tried to flash the board's firmware with both the demo and the ...
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HDMI connector power port
I am designing an HDMI switch with two inputs and one output. I found a multiplexer that can be used specifically for this purpose
(HD3SS215)
but it needs a 3.3 V power supply.
Can I use the 5 V power ...
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Turn screen on/off with an N-channel MOSFET
I have a display monitor that is connected to a Raspberry Pi, all running off a battery. Most of the time the monitor is not used so I'd like to turn it on only when required, but I also would like it ...
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Minimum set of pins to block HDMI
I am trying to build a device to block HDMI signal (from receiver perspective, i.e. the TV) and I was wondering if there is a minimum number of pins (ideally one) that I can use to accomplish such a ...
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Looking for an explanation of grounding in relation to computers and DVI-HDMI adapters
I recently found that a DVI-HDMI adapter, purchased to connect the micro-HDMI port on my new Raspberry Pi 400 to the DVI port on my monitor, behaves strangely: it works well when connecting to my ATX ...
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HDMI Type E pinout
I am looking for the pin out of the HDMI Type-E connector? It is surprisingly hard to find and as far as I know the pins 1-19 are not the same as Type-A.
What is the pin out of HDMI Type-E?
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Is there such thing as a TMDS decoder IC or device?
I am interested in measuring audio latency of an HDMI sink device (DUT). I have an 8K Murideo Seven Generator, but I believe that its audio latency measurements may be off by 15 or 20 ms, so I would ...
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Why did a spark occur between my HDMI cable and metal lamp base?
Edit:
Update 1/2/22 @ 2:27 UTC: outlet tester shows that all outlets and power strip outlets being used were normal.
Update 1/2/22 @ 21:07 UTC: performed various continuity tests which suggest to me ...
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How to connect Mini LVDS to standard LVDS or HDMI?
I've purchased a LCD TFT Display (LG Display LA123WF-SL01) that has an absurd connecter that i haven't seen anywhere online that it has been used before. The name of the connector is FH28D-64S-0.5SH.
...
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Can one have ethernet connection through laptop's HDMI port?
Recently, I was trying to get a laptop (that had no ethernet port) connected to an ethernet device. The device communicates via HTTP, and the laptop had Windows OS.
The device manufacturer's tech ...
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Wiring of HDMI Extender
I'm trying to work on a HDMI extender
The purpose is to single out the DDC lines so I can set the default display mode. (plug the male connector into the monitor and the hdmi cable from my laptop into ...
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Strange PWM on HDMI CEC pin [A: It was a broken wire]
I hit a problem designing HDMI CEC device:
I connect logic analyzer to TV with plug like this:
When I connect to my TV with HDMI, on CEC pin I see constant PWM.
When I press buttons on remote, I see ...
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HDMI or DisplayPort through USB-C?
I want to get video output through USB-C from Raspberry Compute Module 4. I can get HDMI output from Rasp CM4, but I am not sure that HDMI Alt Mode works fine on USB-C (and I can't find hardware to ...
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HDMI green signal not working as intended
I have been working on a host PCB for the Raspberry Pi CM4, and wanted to add some HDMI output. The beauty of the CM4 is that you don't need any further chips, just some current limiting chips on the ...
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Where to find datasheet for male/plug HDMI connectors?
Okay I know this might sound like a silly question....
But I CANNOT find these on Digi-Key or Mouser. Am I just stupid and searching for the wrong thing? Almost all websites sell the receptacle...I ...
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Synchronize IR sensor output and HDMI (FPGA)
I'm having problems when trying to synchronize output from IR camera and hdmi transmitter.
I use cyclone FPGA and ulis IR sensor, for describing how I use Verilog.
Sensor frame rate is 60 fps, same ...
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Impedance Matching Necessary for short HDMI trace?
So, I am working on a design that uses HDMI for media output. The PCB has a connector for the Raspberry Pi CM4, and usually what I would do, is to do a "differential pair route" where I do a ...
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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 ...
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