Re: TI-H: Touch screens

To: ti-hardware@lists.ticalc.org
Subject: Re: TI-H: Touch screens
From: Richard Piotter <richfile@prairie.lakes.com>
Date: Sat, 09 May 1998 08:55:31 +0100
Delivered-To: ti-hardware-outgoing@towerguard.unix.edu.sollentuna.se
References: <025301bd7ac2$58476540$0a0a0a0a@gandolf.MarotzSA.com>
Reply-To: ti-hardware@lists.ticalc.org


What you need are two A/D Converters and a microcontroler. You just turn the x
and y value from the touch screen into two digital values. If you were realy
good ith the AVR or PIC or whatever, you might add a switch to select calc
models, and then program it to create TI formated variables (x and y), so
BASIC programs could use the GETCBL or GET or whatever it's called. Like I
said, it's a lot of work, but I think it would be possible! You'd probably
need a third variable if you program the driver chip to support tapping. (like
clicking a mouse button)
-- 


Richard Piotter
richfile@prairie.lakes.com

The Richfiles TI Hardware and BASIC web page:
http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html

References:

Re: TI-H: Touch screens

From: "David Knaack" <dknaack@easen.net>

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