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Re: USB Monitor?

Posted: Sun Nov 06, 2011 3:52 pm
by shusain93
I was wondering if I could use one of those $100 USB screens on the R-PI? What I hope to do is use it as a WiFi diagnostics device. I can't use VNC because my USB WiFi card would be in monitor mode...

If anyone finds a cheaper USB monitor that would work with the R-PI I'd like to know!

Re: USB Monitor?

Posted: Sun Nov 06, 2011 4:34 pm
by adric22
Quote from shusain93 on November 6, 2011, 15:52
I was wondering if I could use one of those $100 USB screens on the R-PI?!

I had been wondering the same thing. I'm sure it is just a matter of writing a driver, unless those things use some kind of universal driver. They also make USB to VGA and USB to HDMI adapters. That way you could run multiple monitors on the unit.

Re: USB Monitor?

Posted: Sun Nov 06, 2011 5:15 pm
by Xillra
IT should work as long as you have Linux drivers the the monitor(?). Even on Ebay though, it's hard to find a decent monitor under 100$. If you want to make a Tablet, you of course need a touch one. Then, you will need to get a linux plug-in(?) for touch controls. (I was hoping to do this to,lol)

Re: USB Monitor?

Posted: Sun Nov 06, 2011 9:25 pm
by vman81
you might get away with lcd4linux output to a hacked digital photo frame

http://www.raspberrypi.org/for.....#038;t=174

basically you can get a 1.5" 128x128px keychain photo frame for next to nothing on ebay/amazon (Coby 152 is a brand/model that that seems to work, based on a well documented chip ST2205u)

I've ordered two 2.4" 320x240 photo frames from pearl.de for €30 incl shipping:
http://www.pearl.de/a-HPM1184-5618.shtml
Based on Ax206 that apparently is newer and getting reasonable support.

As far as I understand it, you can't output a console directly, but some sort of widgets in lcd4linux, and push pictures with libgphoto.

Anyone else here have more experience with this?

Re: USB Monitor?

Posted: Mon Nov 07, 2011 1:56 pm
by MmmPi
Quote from shusain93 on November 6, 2011, 15:52
... What I hope to do is use it as a WiFi diagnostics device. I can't use VNC because my USB WiFi card would be in monitor mode...
A second USB WiFi card in client or adhoc mode would give access for VNC.
I will likely be doing this myself. I may do 2 or more WiFi cards in monitor mode to cover more channels simultaneously.
I have a couple ST2205u keychain photo frames to make use of as well.

Re: USB Monitor?

Posted: Mon Nov 07, 2011 2:03 pm
by shusain93
I have only tried doing something like that on a Mac and it didn't work...from what you're saying it would work under Linux I guess it's time to break out Ubuntu 11 again...

Re: USB Monitor?

Posted: Mon Nov 07, 2011 5:23 pm
by MmmPi
As far as macs go I have no experience / knowledge at all.
I had an ARM plug computer (dockstar) connected by WiFi client & running Kismet on a second WiFi card in monitor mode. I know other people had VNC on dockstars but I only used ssh, so my setup was just with text config files.

If you do much work with Wifi or have any signal issues Ubiquiti's AirView Spectrum Analyzer can be really valuable. You don't need the stand alone USB Spectrum Analyzer shown on the AirView page. Any of their AirMax devices can run AirView. NanoStation Loco is only $50 Sometimes there is just a lot of garbage interference on a few channels that you can't see without a spectrum analyzer.