On Mon, Jun 16, 2014 at 9:03 PM, John Watlington <w...@laptop.org> wrote:
> > Walter, > You remember correctly. The hard/clicky/crunchy keyboards are not rated > for as long a lifetime as the membrane/chewy keyboards. While the > membrane > keyboard design was tested to 5 million key presses, IIRC the clicky > keyboard is > only rated to 1 million key presses. (On the other hand, it takes one > minute > to replace a clicky keyboard versus twenty for a membrane keyboard.) > ..if you have a replacement keyboard... any insight into how easy it would be to make replacement keys in the field? > > WARNING: The clicky keyboard was not approved for use by small children > by UL. The reason is that if the keys are pulled off they present a > choking > hazard. > > Cheers, > wad > > On Jun 16, 2014, at 7:13 AM, Walter Bender wrote: > > James, > > Do we have any data re the mechanical reliability/durability/repairability > of the "hard/clicky" keyboards? We do know that although there were some > issues with membrane pealing (presumably resolved with the newer design) > there numerous ingenious local repairs such that most are still working > after 7 years. > > regards. > > -walter > > > On Mon, Jun 16, 2014 at 5:35 AM, James Cameron <qu...@laptop.org> wrote: > >> On Mon, Jun 16, 2014 at 01:54:19PM +0545, Basanta Shrestha wrote: >> > Hi all, >> > We are planning on ordering the next lot of XO-4s and I need some >> > suggestions on which keyboard model to choose -membrane or >> > hard/clicky one. >> >> I think it is great to seek input from the community, but don't forget >> to ask your OLPC contact for help as well. >> >> > We had membrane one for our first lot and keyboard switching was >> > very convenient on that model. One reason not to choose hard/clicky >> > one is that it doesn't have key for language switching ( correct me >> > if I am wrong) -I have one spanish hard/clicky and it doesn't have >> > that key - key 56 at >> > http://wiki.laptop.org/go/OLPC_Keyboard_layouts. >> >> Yes, that's a good reason not to choose the mechanical keyboard; you >> would have to customise your operating system build again, to add a >> key combination for keyboard language switch. If the cost of >> customising is too high, you should order membrane keyboard. I don't >> know the relative costs of the keyboards, and their replacement rates, >> but it might be factored in to your decision. >> >> You identified the lack of language switch key in this same thread on >> sugar-devel@ back in November 2013, from which I'll draw some status: >> >> Walter says use a key combination: >> http://lists.sugarlabs.org/archive/sugar-devel/2013-November/045724.html >> >> And says that customisation will be needed: >> http://lists.sugarlabs.org/archive/sugar-devel/2013-November/045800.html >> >> Then you suggest alt+space: >> http://lists.sugarlabs.org/archive/sugar-devel/2013-November/045807.html >> >> Daniel Drake says to use olpc-os-builder: >> http://lists.sugarlabs.org/archive/sugar-devel/2013-November/045851.html >> >> And you asked about the alt+space: >> http://lists.sugarlabs.org/archive/sugar-devel/2013-November/045857.html >> >> But the thread dried up on that subject because the units you received >> had a membrane keyboard, not a mechanical keyboard. >> >> I think you need to change the xkb files, but I'm not sure. Do you >> have a mechanical keyboard you can test with? If not, you'll have to >> get someone else to do this. >> >> > Hard/Clicky on the other hard is more convenient while typing. >> > Please suggest. >> >> I don't understand why you think it is more convenient. To me the >> keyboards are equally convenient for an inexperienced child. Perhaps >> you intended to mention some characteristic? >> >> -- >> James Cameron >> http://quozl.linux.org.au/ >> > > > > -- > Walter Bender > Sugar Labs > http://www.sugarlabs.org > _______________________________________________ > Devel mailing list > Devel@lists.laptop.org > http://lists.laptop.org/listinfo/devel > > > -- Walter Bender Sugar Labs http://www.sugarlabs.org
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