VGA Monitor and Wi-Fi with the Raspberry Pi


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by GigaG » Sat Apr 07, 2012 11:53 pm
So I am thinking of buying the Pi, but I have a major issue - I lack any HDMI monitors or RCA cables, I could use an old TV and buy an RCA cable but that would look cruddy, and I might not be able to use the TV I am thinking of using. Actually, I do have an HDMI - compatible monitor, but I am using it. We have an HDTV, but I don't think my family would find it convenient for me to plug a computer into it. What I do have is some VGA monitors. So, is it possible to buy an adapter that connects the RCA or HDMI to VGA, and could somebody link to it?

My house also uses cable internet, and the cable modem which would allow me to connect via Ethernet is far from my room (and I don't want one of those giant ethernet cables, in fact, I don't even know if they make them long enough). My house has no internet jacks, and I don't think I have crossover cables. Therefore, I need a (preferable cheap) wireless adapter that works with the Pi.

Thank you!

GigaG
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by Nr90 » Sun Apr 08, 2012 12:25 am
The foundation has talked about making a list of compatible hardware (including wifi adapters) available soon.
I presume info about working hardware will be available shortly after launch.

You can do a search on the VGA adapter, it has been discussed multiple times.
AFAIK the passive VGA-hdmi adapters will not work.
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by durntdude » Sun Apr 08, 2012 12:28 am
I can't really answer your other questions, but I will tell you that cat5e is rated at 100 meters
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by Vindicator » Sun Apr 08, 2012 12:37 am
Question 1 does your monitor also have DVI as well as a VGA port.

You can use a HDMI to DVI cable to solve your problem if not maybe it is time to buy a newer monitor that does have VGA/DVI since it will most likely be more efficient than your older monitor.

A HDMI to VGA adapters are very expensive but not always as expensive as a new monitor.(it needs to be an active adapter so a cheap cable will not do the job.)

Network cables come pre-made up to as much as 100 feet but a cheap G usb WiFi adapter might be your answer.

As for WiFi adapters that may work that will remain to be seen as most of the adapters that are being quoted as working probably have not been actually tried with a Raspberry-pi and a specific distribution per say, I have a WUSB54GC linksys adapter I hope will work, It works with the live CD's I have tried and the machine that I am currently running (puppy Linux 5.2.5 on an old celeron 900mhz machine, Debian live on a HP531W 1300mhz machine and Ubuntu 11.10 on a 3.06ghz machine HP1223A and the adapter works on all the versions without any fuss at all) so my hope is it will work on the Raspi as it seems to be supported at kernel level.

You will find much more information in the Wiki and the FAQ on these and other questions you may have.
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by lyzby » Sun Apr 08, 2012 12:42 am
I'm sure many wifi adaptors will work. For conversion to VGA, you will probably find that that will cost more than the r-pi.

My own plan is to go "headless"--initially set it up using the family TV, install ssh (e.g., openssh), and then control it from the command line via putty.

Of course, that won't help if you intend to use the video output from the r-pi, for instance with xbmc or the like.
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by johnbeetem » Sun Apr 08, 2012 1:54 am
There are some HDMI to VGA "should work" converters listed in the RasPi Wiki. If you already have a monitor with HDMI input, you might consider a cheap "Ultra High Performance HDMI Switcher". I use one of those (paid US$12 at Amazon) with two PCs and a BeagleBoard, and I plan to use it with my RasPi.  The switch buffers the HDMI signals, and works fine with cheap 1m HDMI cables.

The SMSC LAN9512 chip used by RasPi supports Auto-MDIX so assuming it's not disabled by software you won't need to worry about a cross-over cable.
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by GigaG » Sun Apr 08, 2012 4:54 am
^Why would you need an "HDMI Switcher" if you have a cable and a monitor that supports HDMI?
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by andri » Sun Apr 08, 2012 5:58 am
GigaG said:


^Why would you need an "HDMI Switcher" if you have a cable and a monitor that supports HDMI?


Because he need MULTIPLE HDMI inputs.
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by Jim Manley » Sun Apr 08, 2012 6:32 am
For those going headless, apparently the ssh daemon runs at boot on at least the Debian distro for the R-Pi. Need to check whether VNC will also be running, but, that may need to be installed, first.
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by Vindicator » Sun Apr 08, 2012 8:23 am
Probably for the same reason I use a 8 port KVM to run 4 computers on one monitor/mouse/Keyboard but that is traveling far off the track for what you are asking I think as you do not want to use the main family TV for you PI.

My TV has 4 HDMI/2 component/2 composite/1 VGA/1 USB and hooked to it is a digital cable box/Xbox/xbox360/blue ray/Dell xps210 (TV card for recording shows)/and sometimes a WII but how often I get to use it is another story.

I have a 19" TV in the my room with one each of every port on the main TV except the USB and the KVM is attached to its VGA. I will use an old 17" Dell monitor to start with as it has DVI/VGA and a powered 4 port USB hub for my PI and then migrate it to the TV so I can play with the HDMI later.( I plan on playing with the composite also but hate to have to use it all the time)have got spoiled I guess.

There are 4 computer monitors in my house and all of them have DVI/VGA.
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by rurwin » Sun Apr 08, 2012 9:46 am
A monitor can be had for less than the cost of a RaspPi:

eBay search

Those Eizo things tend to sell for £8, and there was a 24" widescreen recently that failed to sell for £0.99 (+£25 p&p).
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by Kernel » Sun Apr 08, 2012 2:26 pm
Some good suggestions - you can also use vnc/remote desktop and view the pi's "screen" on your own monitor whilst still using it for other things - basically the pi screen will show up as its own window in windows
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by Kernel » Sun Apr 08, 2012 2:28 pm
rurwin said:


A monitor can be had for less than the cost of a RaspPi:

eBay search

Those Eizo things tend to sell for £8, and there was a 24" widescreen recently that failed to sell for £0.99 (+£25 p&p).



quite interesting - quite a few of those seem to have gone for quite cheap - I hadn't been expecting that!
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by JeremyF » Sun Apr 08, 2012 2:39 pm
GigaG said:


So I am thinking of buying the Pi, but I have a major issue - I lack any HDMI monitors or RCA cables, I could use an old TV and buy an RCA cable but that would look cruddy, and I might not be able to use the TV I am thinking of using. Actually, I do have an HDMI - compatible monitor, but I am using it. We have an HDTV, but I don't think my family would find it convenient for me to plug a computer into it. What I do have is some VGA monitors. So, is it possible to buy an adapter that connects the RCA or HDMI to VGA, and could somebody link to it?

My house also uses cable internet, and the cable modem which would allow me to connect via Ethernet is far from my room (and I don't want one of those giant ethernet cables, in fact, I don't even know if they make them long enough). My house has no internet jacks, and I don't think I have crossover cables. Therefore, I need a (preferable cheap) wireless adapter that works with the Pi.

Thank you!

GigaG



1. Why not use the VGA monitor with your computer and the HDMI with the Pi?

2. Allegedly, as far as I know,  Ralink 2870/3070, Realtek rtl8187, and ZyDAS zd1211rw based models work for wireless internet on the Pi.
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by GigaG » Sun Apr 08, 2012 6:00 pm
^Well, I want my widescreen monitor on my pc. The monitor, however, can switch between VGA and HDMI with a switch, so I think I am good if I have a KVM switch for my keyboard/mouse (or I could just use a surplus keyboard and mouse that I have).

For a tube TV, how would a Linux desktop on the Pi work on a CRT TV? I don't know how good this would look, but the TV is about the size of a PC monitor.

My USB wi-fi is a My wi-fi card is a WUSB54G v4. From what I know there is some sort of ralink driver that can run it on mac, but is there an ARM driver for Linux on its chipset?
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by SimCS » Wed Apr 11, 2012 1:44 pm
GigaG said:


So I am thinking of buying the Pi, but I have a major issue - I lack any HDMI monitors or RCA cables, I could use an old TV and buy an RCA cable but that would look cruddy, and I might not be able to use the TV I am thinking of using. Actually, I do have an HDMI - compatible monitor, but I am using it. We have an HDTV, but I don't think my family would find it convenient for me to plug a computer into it. What I do have is some VGA monitors. So, is it possible to buy an adapter that connects the RCA or HDMI to VGA, and could somebody link to it?

My house also uses cable internet, and the cable modem which would allow me to connect via Ethernet is far from my room (and I don't want one of those giant ethernet cables, in fact, I don't even know if they make them long enough). My house has no internet jacks, and I don't think I have crossover cables. Therefore, I need a (preferable cheap) wireless adapter that works with the Pi.

Thank you!

GigaG



Why not buy a cheap widescreen Full HD TV with HDMI input, e.g. one of the Tesco own brand ones (Technika). You can get a 22in model for £130.
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by poing » Wed Apr 11, 2012 2:57 pm
GigaG said:


^Well, I want my widescreen monitor on my pc. The monitor, however, can switch between VGA and HDMI with a switch, so I think I am good if I have a KVM switch for my keyboard/mouse (or I could just use a surplus keyboard and mouse that I have).


Look at Synergy http://synergy-foss.org/
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by JeremyF » Wed Apr 11, 2012 7:12 pm
poing said:


GigaG said:


^Well, I want my widescreen monitor on my pc. The monitor, however, can switch between VGA and HDMI with a switch, so I think I am good if I have a KVM switch for my keyboard/mouse (or I could just use a surplus keyboard and mouse that I have).


Look at Synergy http://synergy-foss.org/



Note that the source code will have to compiled for ARM, but it is almost definitely possible.
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by jamesh » Wed Apr 11, 2012 8:17 pm
JeremyF said:





2. Allegedly, as far as I know,  Ralink 2870/3070, Realtek rtl8187, and ZyDAS zd1211rw based models work for wireless internet on the Pi.


Those are the one I have tried on a Raspi - then I ran out of adapters to try. I'm pretty sure loads of others will work as well. Lots of work being done in this area at the moment, but still not quite plug and play for ALL adapters.
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by Bollard » Thu Apr 19, 2012 3:52 pm
This thread is crazy!!! If the idea is to get Pi's into schools, I know for a fact my school will not be adopting them any time soon. Every single computer in the school is connected via VGA, and I didn't know till today you would need a converter, not just an adapter, to get the image to appear.

I'm even talking about the newer widescreen 19" monitors they got, every single one is VGA only. I can't imagine all the schools in the UK just having DVI capable monitors lying around everywhere...
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by john_wage » Thu Apr 19, 2012 3:58 pm
@Bollard

Anything bought like post-2003 (guesstimate) should have at least DVI-Digital to compliment the VGA.

If not, you got ripped off by someone trying to vent outdated stocks, this is quite common since it's hard for an inexperienced user to tell the difference between an old LCD-TFT monitor and a new one juts by the looks of it.
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by jamesh » Thu Apr 19, 2012 4:01 pm
Bollard said:


This thread is crazy!!! If the idea is to get Pi's into schools, I know for a fact my school will not be adopting them any time soon. Every single computer in the school is connected via VGA, and I didn't know till today you would need a converter, not just an adapter, to get the image to appear.

I'm even talking about the newer widescreen 19" monitors they got, every single one is VGA only. I can't imagine all the schools in the UK just having DVI capable monitors lying around everywhere...


Did you read the reason why there is no VGA out? Because it would probably double the cost of the device thereby negating the main advantage of the device. Just for VGA.

Also, are you telling me that a recent purchase of monitors for your school were LCD BUT only have VGA in? They were HAD. Ripped Off. Scammed. 21.5" monitor on Ebuyer right now, £87 each (http://www.ebuyer.com/282218-p.....26v3lsb-00). Your school should be chastised for buying out of date equipment. DVI and HDMI have been available for no extra cost on monitors for two years at least. Almost TV's sold to homes now have HDMI as well. VGA is dead and almost buried.
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by phillymac » Thu Apr 19, 2012 4:02 pm
In the Uk there are adapters for Ethernet that work across the mains cabling.  I plan to use a pair of these to connect to my broadband router.  I can then site my Pi wherever there is mains.  These work for me: http://www.7dayshop.com/catalo....._id=110819 - others are available.....

I agree with earlier posters about vga only monitors in schools.  Could cause a problem.
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by jamesh » Thu Apr 19, 2012 4:07 pm
Nobody is denying the lack VGA isn't a problem, however, there simply isn't a cost effective way of fixing it. The Foundation had to take a pragmatic approach - keep to the price, and use the modern interface, or add to the price for backwards compatibility with an outdated interface.
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by mole125 » Thu Apr 19, 2012 4:21 pm
My company has a habit of ordering vga only monitors by default as they are £10 cheaper than the dvi version. It is crazy but that's bean counters for you!

I wouldn't expect most UK schools to be replacing existing computers initially, the price point is low enough that they may well be additional devices, even if it also means buying a TV/monitor and io devices for them. It may also be that someone (the foundation even) will manage to produce cheaply enough an adaptor to convert the LVDS output to VGA - once the appropriate drivers/interfaces have been written.
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