Re: Count-o-meter

[sirius@spirit.com.au (Michael Hickey)]

In article <4pacjq$6db@news.nevada.edu>, snit@nevada.edu (Snit) wrote:

> I am looking for a device to hook to my IIgs that will allow me to
> record the number of times and the actual time that an infrared beam
> is crossed.  I want to be able to analyse the info in a spreadsheet or
> stats program.  I would prefer to do this on an Apple II but if
> someone knows how to do this on another platform, that would be OK,
> too.
> 
> Thanks in advance for anyone with a solution.

Try contacting 

Vernier Software
2920 S.W. 89th Avenue
Portland Oregon  97225
(503) 297-5317

David L. Vernier (used to) produce a book called "HOW TO BUILD A BETTER
MOUSETRAP and 13 Other Science Projects Using The Apple II" ($25) They
also sold short-form kits at reasonable prices.

Project #1 is a Photogate timer exactly as you describe and includes Timer
software and a BASIC program you can modify to LOG the data to a DOS 3.3
text file.

The Book is huge and includes part lists, circuit diagrams, drawings,
sketches, photographs, software and source code and is suitable for 7-12th
grade physics/general science students and teachers.

All use the Apple II game port on Apple II, II+, IIe and IIgs rather than
complicated slot-based solutions. 

Since some projects use the STROBE, they are not suitable for the Apple
IIc game port, others can be modified and adapted using a simple hardware
and/or software modification explained in the book.

This is a good book I heartily recommend. You will probably learn more
than your students!

-- 
                 Michael Hickey, Canberra, Australia
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