bummer. all my DVI cables are DVI-D, no analog pins, so i have to buy the adapter anyway. and then checking DVI-D to HDMI converter, it seems there's hope...
https://sites.google.com/site/scidiy/pc-diy/hdmi-to-dvi-dso i stripped both of them they indeed quite similar, 4 twisted pairs of differential signals with shield wire each, now i know what are those pins are, before i just a lame user. just still not sure what characteristic impedance are they? yes looks like this is going to be artful soldering technique to maintain integrity, minimize discontinuity, so tonight i'm going to rest first for a long day tomorrow.
That looks legit but the question is to why bother with this?
thanks for confirmation but it cant be done as stated above. why? because i need this the quickest i can without waiting idle during shipping, waiting idle can drive me nuts. but looks like i have to make the order and in the mean time try the DVI-HDMI diy. sad i cant setup my workstation soonest yet.
These adapters come packed with every graphic card, motherboard and what not these days (VGA outputs are getting rare, most cards have one or two DVIs and then only HDMI/DisplayPort connectors). I have probably 3-4 of them sitting in my desk, unused, because these are so rarely needed.
not in my case. this workstation (HP Z800) is aged came all the way from the USA, so its not come with any adapter (NVidia Quadro 4000 inside). even when i bought new graphics card many years ago, they didnt come with any adapter, just the cable. thats why i have few DVI cables right now. last time one of them is used on my older monitor, the rest are still unused. but nowadays, cheap monitor option only have VGA input, with HDMI if we are lucky. the one with DVI input i guess is the higher end one the more expensive price. i am now back to 27" vga monitor, cheapest in town. i cant justify DVI, they just look the same to me.
And if you don't have one, they can be bought for a buck or two, delivered. Also most stores selling computers will have adapters like this.
the nearest computer shop with enough and acceptable stocks is 100+ km away from me, so its not that easy.
Building this yourself can be a pain because if you aren't careful with shielding and soldering you are going to have signal integrity issues - noise, ghosting due to reflections, messed up colors, etc. Can be done, though.
many years back i managed to make usb extension cable about 5m+ long from thick wires used for electrical appliances to mains plug (3 prong) and then i add the fourth wire stripped from another cable, to connect to usb mobile internet donggle far away from PC to get better reception, it worked. its amazing to think back how i can do such thing on signal integrity tight line. i never heard words such as signal integrity nor differential signalling during that time
i think this DVI-HDMI attempt will be a good lesson how we can stretch the limit, just now i read a discussion in another forum, they guy wrote we cant do this diy since "the HDMI cable is terminated in the factory (using machine)", so i will see how valid is this statement, so i can tell the story. cheers.
I have probably 3-4 of them sitting in my desk, unused, because these are so rarely needed.
And if you don't have one, they can be bought for a buck or two, delivered.
Exactly. Also answer to original question is: most likely impossible, because most DVI-DVI cables are not DVI-I but DVI-D "digital only" type, with some analog pins absent. More about DVI connector variations here: https://en.wikipedia.org/wiki/Digital_Visual_Interface
spot on as i just realized.
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