I want to connect my laptop monitor with BB. Can anyone help me how
can i connect it? I have searched frame grabber card but dont have
much idea. Please help me
probably remote terminal with networking is best solution.
ssh if you only need a terminal or serial through usb if
you want a console.
Other than this the laptop does not support using its monitor.
Capture of the s-video port would be very low quality at low
resolution. If it is not for mobile use a DVI monitor for the
beagleboard is an inexpensive solution using a hdmi 2 dvi cable.
djlewis
But i want to use BB as a compact PC connecting usb keyboard usb mouse and laptop monitor. I dont hv network terminal. If i purchase monitor only for BB thn its very expensive.
I want to add to this thread with a issue that I am having with my new Beagle Board xM, has anyone tried connecting the xM with the Dell ST2410 Full HD monitor using the HDMI 2 DVI-D cable.
When I do that I don’t see anything on the monitor, and the monitor goes in sleep mode as soon as I power on the board, seems like its not getting anything from the board. The board is working fine as I can ssh and connect it through serial.
On a lower resolution DVD monitor I was able to get command line terminal but not the Angstrom GUI, due to resolution or refresh rate error.
Please suggest me with what can be done to get the GUI running on the DVI monitor.
Thanks,
Mrityunjay
First, this is possible but you probably wouldn't like the result. You
can ssh into the BB from your laptop using a eth hub between the two (or
a cross over cable to skip the hub) and use ssh's -X option to have X
applications displayed on the laptop. If you try to run the full
desktop, GNOME or KDE for example, this is likely to be extremely slow.
Alternatively, you can get a relatively low cost ($100) USB display:
http://www.thinkgeek.com/computing/usb-gadgets/c609/
This latter option will require a fair understanding of how to build
kernel and X.org modules to get it working. Here is how one guy got it
working when connected to his Ubuntu laptop:
See also:
http://libdlo.freedesktop.org/wiki/HowTo
Koen Kooi has a photo of the Lilliput working with BeagleBox:
http://www.flickr.com/photos/koenkooi/3748865129/
Unfortunately, this option requires a powered external USB hub because
the BB can't supply enough power for the display.
An alternative to a USB monitor are portable media players, if you can find one with an acceptable video input.
I got one of these a while back specifically to use with my BB and it works great.
http://www.alibaba.com/product-gs/341037852/9_Portable_Multimedia_player_support_favourite.html
It has HDMI in, a built in rechargeable battery and cost about $100 CDN (it was $750HKD).
Cheers,
Aaron
Vishal,
This can be done using an X server. I have used it successfully.
Look at this thread:
http://groups.google.com/group/beagleboard/browse_thread/thread/37684d2bd6a56ecb/7b0ec1445270549e?lnk=gst&q=x+server+gopal#7b0ec1445270549e
Regards,
What do you mean with “laptop monitor”?
do you need to connect a LCD panel (like what is inside laptops displays) directly?
do you need to connect to a LCD monitor (LCD panel + driver board) what signal do you need it Analog or Digi?
If you want to use an LCD panel directly, is it parallel, TTL, LDVS?
What “laptop monitor” are you using? do you have a spec sheet
I dont hv network terminal. If i purchase monitor only for BB thn its very expensive
Its unclear as to what you want, if what you need is to connect to a laptop already running, then you have several options as noted in other emails, network, vnc, x , grab the frame buffer yourself, use android and some of the android remote displays, whatever fits you
Lioric
laptop monitor means i hv laptop compaq model in which having windows 7 vmware and linux. Laptop has as usual four usb ports. now my question is … can i use my laptop monitor with BB ? see now a days in market tv tuner card with usb port is available we can our laptop as tv screen. so is thr any any technology or card available in market through which i can connect BB’s video output as input of my laptop?
I am currently working on a solution to interface lcd directly. I don’t have any experience with this, although it is quite a learning experience. I have many lcd screens to play with. There are some challenges to overcome.
-
The back light on most of my screens require a DC to AC inverter for the bulbs. Their like florescent bulbs and require high voltage. I found that getting the data sheets for these can be a challenge. Therefore it takes some research to find the pinouts for the inputs. I found it easier to find a decent circuit diagram for an inverter and rob the parts from inverters to create my own adjustable inverter.
-
many newer lcd’s have led’s instead of the bulbs. I found these to be much easier to conquer since you only need to convert DCtoDC. Higher voltage DC. One led backlit I have takes 15v DC. I’m using a 3amp wall wart to power my beagle, which leaves me with enough juice to use a led back light and ramp it up a bit to get the leds powered up.
-
I have found that many of the lcd’s I have laying around have different interface signals. The ones I have targeted for use are the ones that accept LVDS signals. Its less work as I can take the signals right from the HDMI port on the Beagle. This is much less work as most of my lcd’s have LVDS decoder built in. What this means is that I don’t have to create an interface circuit. I found this by comparing what data sheets I could find for my lcds to the beagle hdmi to dvi-d cable pinout descriptions.
-
So… currently I purchased a bare hdmi cable end for 3$ at the local electronics supply. I have soldered on a short 3" cable connected to a strip of pin headers to plug into a breadboard for easy testing. So far I have 3 of them working this way. I will however buy a short HDMI cable and cut it instead of just buying the plug itself. I found that what I have done picks up noise from not having proper shielding between the HDMI port on the beagle and my lcd.
What else is on my list of things to do is figuring out how to access the gpio pins on the beagle to control additional features found on this one 7" lcd I have. It has additional connections for 5v signals for screen rotation and video format. Also analog inputs for color correction, etc. I’d especially like to learn how to use A/D and D/A on those GPIO pins on the beagle. The 7" lcd has a touch screen interface I really want to use. Also I think adding my accelerometer to the interface would be fun for screen rotation.
I am not a college grad so keep that in mind when reading this. Everything I learned about this stuff was from my deep interest in this hobby and thankfully the Internet. I’d really love to hear input from the educated folks in here about my findings to see if there’s any better methods than the ones I’m currently using. 
Mark
Your project is really interesting. I have many dead laptops around
and I would love to reuse the LCD screens from them for the
beagleboard.
Hi all,
I feel compelled to point out, as one other respondent had done earlier in this thread, that the easiest method for simply viewing BeagleBoard output on a separate host’s monitor is to use VNC. Set up a VNC server on Angstrom and then connect to it from your host.
Ya vishal, I had found an way...... Am connecting svideo-->composite/
rca (only a capacitor of 470pf can convert svideo to rca)--> uplink-to
tv rf freuency then laptop tv tunner, and can see the o/p on my
lappy
Can you explain in more details?
best regards
giovanni
Hi Mark,
I am also trying to connect the LVDS LCD panel to HDMI connector of
Beagleboard-XM. But i do not get any display on screen.
Can you just share me the datasheet of LVDS panel you used and te
connection diagram used to connect the beagleboard-XM with it.
wishes
Did this experiment work? I am trying to connect my laptop keyboard to BB.