DIY – Wireless USB monitor
by , 02-24-2009 at 05:55 PM (9068 Views)
How to build your own wireless USB monitor - We took an IOGear wireless VGA device (GUC2015V), an M1-ATX, a Lilliput 10” monitor and a laptop battery to make a super hacked wireless monitor. If you spent more than an hour on this you could really make this hack usable. We couldn’t get more than 15’ of range out of this with line of sight, but it was fun to try. Based on the amperage of the devices, we could theoretically get a few hours out of this per charge.
***Update 2-26-2009
Other power supplies that could be used:
The m3-atx is probably a better supply to use for this project.
How much Power does this use?
260 milli amps for just the receiver.
1.1 amps for the receiver and screen.
Our battery has a capacity at 14.8 volts of 6600mAH.
Does this mean we get 6 hours of run time? Wow.
Host CPU Loads tested on my desktop
DisplayLinkManager is what does the processing for the Wireless VGA adapter.
Hardware used for testing
3 year old 2.8 Ghz Pentium D Dual core CPU
4gb of Ram
Windows XP
800x480 output
CPU Load Results
0% - CPU load with an idle screen (desktop only)
0-2% - CPU load with google talk
2-3% - VLC movie paused
9%-12% - VLC playing a movie
Part 2 Video Transcript:
Hi. My name is Rob Wray with MP3 Car. I told you we would test out this wireless monitor in the car, so for the last hour we’ve been goofing around in the parking lot of our office trying to get this to work. And actually it worked perfectly right off the bat the same way as it did work in our office. I just wanted to do something off-the-wall with it.
So it’s working perfectly. I happen to have a Centrifuge help video loaded on the monitor right now. We’ve got a great wireless signal. We’ve done some calculations recently. We think this little hack job here can get about six hours of wireless time using the 10” monitor. So that’s pretty exciting. And we’ve been really happy with the video quality playback.
The first thing that we tried to do to hack it, to make it look kind of cool and newsworthy was to hack in a USB HDTV tuner. So we did that. It worked well except the HDTV won’t play on this monitor. There’s certain things that don’t work well over ultra wideband USB and apparently the GT HD tuner that we sell in our store is one of those things that doesn’t work well.
We also had some problems with getting StreetDeck to work well wirelessly over ultra wideband, but things like VLC which I used in my previous demo worked wonderfully. You get great frame rate playback, and that sort of thing. So I’m going to go ahead and start this movie here, and you can see that the picture quality’s pretty good.
So we’ve been pretty happy with this as a solution. The only thing that we’ve seen is that, again it doesn’t support all video formats, and you also get – every now and then you’ll get a little bit of a wiggle over here on the left side. I’m assuming that’s from some type of interference that’s happening as a result of the engine alternator or various other little things. But it was happening before and now it’s completely gone away, so I think it’s almost unnoticeable.
So try this at home. Thanks for watching our blog.
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the biggest problem with lipo's is that they are a more sensitive to charging, and over-discharging, and most are expensive--that pack you linked to is $125!!
i'll post some of the ideas i have been coming up with here--
all lipo packs not only need to be charged carefully--just search youtube for a charging lipo pack blowing up--if charged wrong, they could take your house/car with them... anyways, the multi cell packs also need to be ballanced, and this is primarily why the packs and chargers are normally so expensive.
but, i have found a solution for it! e-flight, a rc plane/heli company has a super small, 3 cell balancing charger, for cheap-- it retails on their websit for about $30:
http://www.bladehelis.com/Products/D...rodID=EFLC3115
i have also found 3 cll batteries for cheap(another $30)--
http://www.amazon.com/1000mAh-11-1V-...0128057&sr=8-3
so that would get you a a pack and a balancing charger for about $60-70!
the problem though is to keep everything compact, the carger is going to have to stay external, and the battery will need some slimming mods done to it(assuming that they could even be done)-- that pack is huge when your trying to stick it to the back of a 7" screen...instead of a laptop battery could i use this
http://www.batteryspace.com/li-ion18...gedisplay.aspx
and if i used this would i be able to use this to charge it
http://www.bestbuy.com/site/Powermat...ive%20charging
and i was wondering if this would work
http://www.instructables.com/id/Wood-Induction-Charger/
i was thinking the above because i could make a locking mech and it would add to the security of the car. no one would see the screen and want to steal it. it would just be wood....
I see where your coming from, after looking at the cost of a standard li-ion charger, this project is not gong to be anywhere near cheap. this is starting to be a long term goal, mostly for use at car shows, meets, etc.
once built, charging would be a huge issue. idealy, I would like to use a ipod plug, mostly because ipod chargers and acc. easy to come by. but the reality is that it will probably use a cig. lighter adapter.
also, getting everything in a small, easy to handle package is going to involve alot of creative thinking/rearranging. even if I were to use the mimo screen, I still have to fit a battery, usb hub, possibly a charger, and assorted cables, without it becoming extremly heavy..
i'll post some of the ideas i have been coming up with here--
all lipo packs not only need to be charged carefully--just search youtube for a charging lipo pack blowing up--if charged wrong, they could take your house/car with them... anyways, the multi cell packs also need to be ballanced, and this is primarily why the packs and chargers are normally so expensive.
but, i have found a solution for it! e-flight, a rc plane/heli company has a super small, 3 cell balancing charger, for cheap-- it retails on their websit for about $30:
http://www.bladehelis.com/Products/D...rodID=EFLC3115
i have also found 3 cll batteries for cheap(another $30)--
http://www.amazon.com/1000mAh-11-1V-...0128057&sr=8-3
so that would get you a a pack and a balancing charger for about $60-70!
the problem though is to keep everything compact, the carger is going to have to stay external, and the battery will need some slimming mods done to it(assuming that they could even be done)-- that pack is huge when your trying to stick it to the back of a 7" screen...instead of a laptop battery could i use this
http://www.batteryspace.com/li-ion18...gedisplay.aspx
and if i used this would i be able to use this to charge it
http://www.bestbuy.com/site/Powermat...ive%20charging
and i was wondering if this would work
http://www.instructables.com/id/Wood-Induction-Charger/
i was thinking the above because i could make a locking mech and it would add to the security of the car. no one would see the screen and want to steal it. it would just be wood....
I see where your coming from, after looking at the cost of a standard li-ion charger, this project is not gong to be anywhere near cheap. this is starting to be a long term goal, mostly for use at car shows, meets, etc.
once built, charging would be a huge issue. idealy, I would like to use a ipod plug, mostly because ipod chargers and acc. easy to come by. but the reality is that it will probably use a cig. lighter adapter.
also, getting everything in a small, easy to handle package is going to involve alot of creative thinking/rearranging. even if I were to use the mimo screen, I still have to fit a battery, usb hub, possibly a charger, and assorted cables, without it becoming extremly heavy..









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