|
||||||||
HDMI to VGA |
![]() |
|
|
Thread Tools | Search this Thread |
|
|
#1 |
|
Forum Member
Join Date: Dec 2005
Location: Yorkshire, God's County
Posts: 5,182
|
HDMI to VGA
I posted this in answer to a question on the PC section, but the info is equally relevant here (IMO);
This conversion is now neither complex or expensive. The conversion is accomplished by a custom $3 chip which takes its power from the HDMI connection and can easily be encapsulated in a cable based convertor. Similar principle to what the FTDI chips do in USB to serial convertor cables. Google the IT6692FN chip from ITE Tech Inc. There are a myriad of cables using them available now from the usual Far East sources - even on Amazon - for less than a tenner retail and much less wholesale. http://www.unitek-products.com/en/pr...ail.php?id=183 http://www.amazon.co.uk/Neewer-Black...dp/B007KEIRNG/ http://www.youtube.com/watch?v=fgxMB2ZLpMQ **Turn the sound off - the music is bloody dreadful ** They work very well, even on Raspberry Pis (which is what I use mine for, to it hook up to an old VGA only 19" Dell monitor I had kicking about). |
|
|
|
|
Please sign in or register to remove this advertisement.
|
|
|
#2 |
|
Forum Member
Join Date: Jun 2003
Location: Cheshire
Posts: 6,462
|
That's good. Though I'd question the use of the word "passive" since the chip needs power to do its job.
There are a couple of things that are perhaps worth adding for future readers of this thread ... 1) most enquiries seem to be for connecting VGA (from a laptop) to HDMI. So this won't help someone with an older laptop to do that. 2) it doesn't mean that every cable now advertised as HDMI-to-VGA or VGA-to-HDMI will work. There's a lot of scam cables out there, especially on Ebay. 3) The HDMI spec doesn't really allow for pinching power from the 5V line. It happens of course. But stringing a couple of such devices together, and particularly where there's long HDMI runs involved, can make HDMI a bit flaky. If there's an option to use these things with an external power supply then the result should be more robust. 4) VGA and HDTV use differing signal resolutions and timings. For example, HDMI will output at a 50Hz refresh rate for UK TV signals and Region 2 DVD. However, many VGA sockets won't accept a refresh rate under 60Hz. Check the TV or monitor's manual to see if the display can cope with a HDTV-style signal timings and refresh rates via the VGA port. Otherwise, it's a good step forward to making life simpler and it's a useful product if one has an older flatscreen TV where there's no enough HDMI sockets but there is a spare VGA port free. |
|
|
|
![]() |
|
All times are GMT. The time now is 17:18.

