ISEN-ASTC-L is a service of the Association of Science-Technology Centers
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 Happ Trackballs are not only tough but also affordable and so far easy
to maintain. I had one in place for 10 years that required only minor
repairs until I replaced it with the USB version. Two thumbs up!

-----Original Message-----
From: Informal Science Education Network
[mailto:[log in to unmask]] On Behalf Of Erich Rose
Sent: Thursday, September 17, 2009 10:10 AM
To: [log in to unmask]
Subject: Re: Happ Trackball - alternatives

ISEN-ASTC-L is a service of the Association of Science-Technology
Centers
Incorporated, a worldwide network of science museums and related
institutions.
************************************************************************
*****

I agree that Happ would be my first choice.  Recently I spec'd  a couple
of their USB-ready smaller balls. They came in a pretty blue too. But
they have not been on the floor long so I can't testify to them yet.

Years ago I remember a few attempts to fit "computer" track balls into
exhibits. All were disasters. Happ builds products for game arcades. One
of the few environments as tough as our museums.  Possibly they got a
bad batch. But everything I have used from Happ(buttons, balls, lamps)
has always been good.

There are still folks who are gun-shy of touchscreens because of the
earlier history of not being durable and always going out of whack. But
now you can pretty much count on them being totally plug and play.

--
Erich Rose
Exhibit, Environmental and Industrial Design
807 The Living End
Austin, TX 78746
512-626-9930; [log in to unmask]

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