From: David Humphreys (pcbman_at_ix.netcom.com)
Date: Fri Jul 11 2003 - 19:08:32 PDT
Jeff et al,
My approach to this would be as follows:
A self-adhesive membrane switch array stuck to the inside of the lid.
This would be read by a pic chip that would output the newton keyboard
protocol. This is protocol is known and published on the web.
This could then drive either serial port.
A switch (either software or hardware) could toggle the enable for the
keyboard and so there would be no problem when the keyboard is not
being used and the lid is folded all the way back.
The concept is trivial. The largest expense would be the custom
membrane keyboard.
Isn't design fun?
PCBman
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