[Hardware Hacking General] thundercles:
I don't think it would be much heavier, in fact I think the idea is perfect for modification of a netbook. It would probably be cheapest. since so much case modding is required and so many enclosure fabrication resources are handy, to put together a frankenstein out of 2 or 3 broken netbooks. Find someone who smashed the screen of one netbook, another one who fried the board of theirs, find a total-loss broken tablet PC (like dropped in lake michigan level of total loss so it will cost pennies) and get the ribbon cable and swivel element from there. I think if this idea is applied to a netbook it would be excellent in size and weight as well as functionality. And with the x86 version of android's progress, it could even be running android like a tablet in screen out mode, and change to webtop mode when its swiveled. Put a netbook mobile broadband card in there, many netbooks have open card expansions under the screw-out panels underneath, if not you would have to choose between wifi or taking the wifi expansion out in favor of a mobile broadband card, and certainly make sure that the card is supported by your wireless provider if you choose to go the mobile broadband route. With verizon or sprint you will most likely have to acquire a mobile broadband card out of a netbook that was originally sold by the company, but be sure to check and make sure the MEID is clean before paying anything for one, if the seller defaulted on a contract they used to acquire it, you might as well flash the thing to cricket or metroPCS and use them as your mobile broadband carrier. With either wifi or mobile broadband, as well as bluetooth, don't forget the antenna! yeah that thing you have to unhook from the other side of the card to take it out, you need that. (oh yeah, bluetooths are included as expansion cards sometimes too, if so you could always remove this to make room for the mobile broadband if you don't use bluetooth. I sure don't and probably wont until they drop the rediculous prices of non-audio bluetooth interfaces to acceptable and competative levels.)

That project actually sounds pretty freakin cool, the type of thing I'd do if I wasn't already swamped with projects. Definetly keep us posted if you decide to go through with it, as I pointed out, if you build it from netbook parts it should be well within your budget, netbooks run much cheaper then notebooks already, but a netbook is comperable in power to most current android devices and thus is suitable to handle most things you'd use a tablet PC for, just not high powered stuff like compiling code or rendering animation or playing 3d online games.

Edit: I'd like to add and point out that as a regular user of an acer netbook running ubuntu, it is wise to refrain from excessive multitasking, the atom had to sacrifice a bit of things we've become accustomed to in notebooks to meet the low power consumption and operating temperature requirements, and a lot of those things are things that mostly benefit multitasking. You will not be happy if you try and run a jillion programs at the same time.

That being said ubuntu's new primary UI, I forget what it's called evolve or something like that, it is an excellent UI for netbooks, perfectly space-optimized, especially in the vertical range which gets filled quick on lil netbook screens. I'm not sold on it and prefer to go with gnome or xfce on desktops and normal-sized notebooks, but it is top-notch on a netbook. I'd also recommend not messing with the accelerometer at first and including it later as it may be a pain to implement correctly in comparison to the limited amount of functionality it brings to the table. I'd rather have something that works personally that I can make additions to then pull my hair out trying to throw everything in the first time right.

---------- Post added at 10:14 AM ---------- Previous post was at 09:47 AM ----------

Have to LMAO @ this comment. If users would ever actually push developers to release for the linux platform, especially hardware manufacturers (which is ridiculous since all they would have to do is release their code open source, or even just parts of their code and the community would do the rest. Doesn't matter much tho, it's mostly crappy chinese hardware that isn't supported by linux, and their HQs more then likely don't speak enough english to be able to request anything, beleive me I've tried to contact MSI before.... most hardware worth running is fully supported tho)

But point is, I feel like it is extremely cumbersome whenever I'm forced to use windows, apart from trying to use unsupported hardware or cross-platform software (although wine and mono have made GIGANTIC leaps in usability). I pretty much never have to deal with drivers, updates to all software happens automatically, it's become so self-maintaining that I'm ashamed of how lazy of a linux user I've become. When I actually do have to do something even remotely advanced I have to think for a minute about it. Usually the only thing that really requires a lot of getting under the hood that I ever have to do is when I set up my audio-production setups which is even a lot easier now that they have dedicated repositories for them, and when set up correctly the real time preemptable kernel will run circles around any windows or OSX setup latency-wise. I was pulling lower latency with computers recording with ardour, and sequencing/synthesizing/sampling with seq24 amSynth, and qsampler, 5 years older then any PC I would test it against running windows with Reason and Protools. the Jack audio drivers that allowed software to plug audio inbetween applications directly across the PCM was just icing on the cake.

Windows is good software, but linux has certainly surpassed it by leaps and bounds. Windows still rules for gaming because of directX and industry unwillingness to port to linux, but the period of time right after Microsoft declared it was removing directX support from XP on further releases saw linux catch up with windows for a little while as they rushed wine to support the newest directX making it actually possible to actually run new releases under windowsXP even. Curses microsoft, foiled again! And off topic, but furthermore, I can't believe people still pay so much money for that god damn talking paper clip, openoffice.org ftw!

As I said windows isn't bad software, I said before in these forums actually that if windows ran a microsoft controlled repository to distribute all software for windows through, like linux, it would have similarly non-existant problems with viruses. Having people go around the wild-west of the internet downloading and installing programs from there without even thinking about it is just asking for the malware and adware problems windows experiences. Windows is good software, linux is just much better software.