[Testing] [OLPC New Zealand] New prototype XO-1.75s in Auckland, New Zealand

forster at ozonline.com.au forster at ozonline.com.au
Tue Aug 23 07:46:38 EDT 2011


Testing a 1.75 with the HS 'clicky' keyboard

Speak is a bit clicky. The clicks occur in the same places on the same text. Repeat some text: ctrl C ctrl V ctrl V ....
and the same word is clicky, eg 'the quick brown fox' the word 'quick' is noticably more clicky.

Power on fanfare sounds louder and tinnier. Maybe a peak or resonance in the treble? 

I have noticed on the 1.5 and 1.75 mouse that if my finger is too far forward on the button it overhangs the pad and gives a jumpy cursor. The pad is not sure which finger to track.


> On Mon, 2011-08-22 at 21:15 +1000, James Cameron wrote:
> > > In testing the speakers we found the sound to be scratchy like there
> > > are buffer issues.
> > 
> > That's interesting.  More please?
> Speak is the only activity we've which produces sound and works. The
> sound is full of clicks. Also the turn on tune sounds different to how I
> remember the XO 1.5 but I haven't done a side by side test. There is
> something less pleasing about the XO 1.75, but I can't describe it.
> Our clicky keyboard unit has some kind of mouse problem. Sometimes, the
> mouse jumps, especially when you are holding a button. This was
> especially a problem with turtle blocks where you have to hold down the
> mouse button and do very fine control to snap things together. Rolling
> your finger to move very slowly sometimes causes the mouse to jump
> several block heights, rolling it back would cause it go back, but
> actually landing on where you need to go is impossible. Release
> everything and starting again lets you carry on until next time it
> starts jumping.
> I haven't yet tried to pin down the intermittent nature (like say a
> fraction of the area is faulty) and I haven't noticed any patterns
> except that it seems worse while holding down a button (with either the
> same or a different hand). The membrane keyboard model does not seem to
> have this problem.
> Do you have any advice for further diagnosis? Is this a known failure
> mode of the XO-1.5 touch pad (I'm assuming the keyboard half is the same
> in the 1.5 and the 1.75?)?
> We have some XO-1.5 prototypes with wich we could swap the touch pad and
> see if the problem follows the touchpad or stays with the 1.75. Is that
> useful?
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