Newsgroups: comp.robotics
Path: cantaloupe.srv.cs.cmu.edu!das-news.harvard.edu!news2.near.net!MathWorks.Com!europa.eng.gtefsd.com!howland.reston.ans.net!vixen.cso.uiuc.edu!newsfeed.ksu.ksu.edu!moe.ksu.ksu.edu!osuunx.ucc.okstate.edu!olesun!gcouger
From: gcouger@olesun.okstate.edu (Gordon Couger)
Subject: Re: Need help thermometer to RS232?
Message-ID: <Cx3oEL.CpB@osuunx.ucc.okstate.edu>
Sender: news@osuunx.ucc.okstate.edu (USENET News System)
Nntp-Posting-Host: olesun.agen.okstate.edu
Reply-To: Gordon Couger <gcouger@olesun.agen.okstate.edu>=
Organization: Biosystems and Agricultural Engineering at Oklahoma State Univ.
References: <003302Z02101994@anon.penet.fi> <Cx2z9w.Hnu@news.cis.umn.edu>
Date: Mon, 3 Oct 1994 14:03:56 GMT
Lines: 38

In article <Cx2z9w.Hnu@news.cis.umn.edu>,
Brynn Rogers <roger034@gold.tc.umn.edu> wrote:
>In article <003302Z02101994@anon.penet.fi>,  <an136163@anon.penet.fi> wrote:
>>Hi,
>>   I am interested in constructing an electronic thermometer which will
>>interface to a PC.  I would like to use the PC to record temperatures over a
>>period of time.  The interface must use an RS232.  Anyone done this before?
>>Are there any magazines that have featured a project such as this?  Any help
>>would be GREATLY appreciated!

>Motorola has a 68HC05 (I think with an 68HC805? part) Evaluation kit that
>does exactly that.  I think it runs $150 or maybe less.  Another Engineer
>at work has one of these that he bought while in college.
>Call your Motorola guy and request information about it.
>
While over kill you can buy a production 68HC11 board from New Micros
214-339 2204. It cost less than $100 US and comes with FORTH or can
be used with any thing else. I have used C and assembler both on
one. 

A PIC would be a more econimical solution about $7.00 for the chip
and about $5 worth of parts. The down side is you have to build up
the board and it cost $199 for the programmer. You can get these 
from Digi-key 800-344-4539.

I have no conection with either of these firms other than as a
user.

Good luck
Gordon


                            Gordon Couger                            
                            Biosystems & Agricultural Engineering              
                            Oklahoma State University                         
                            114 Ag Hall, Stillwater, OK  74074                 
gcouger@olesun.agen.okstate.edu 405-744-9763 day 624-2855 evenings 
    I do not speak for my employer
