Re: TI-H: REAL radio-link
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Re: TI-H: REAL radio-link
where exactly on their web site would I find this chip?
-----Original Message-----
From: Grant Stockly <gussie@alaska.net>
To: ti-hardware@lists.ticalc.org <ti-hardware@lists.ticalc.org>
Date: Monday, February 23, 1998 6:53 PM
Subject: Re: TI-H: REAL radio-link
>
>making a radio link wouldn't be hard. First get a chip from
>www.national.com. Look arround and find the chips that are made to
>transfer data... There is a chipset that uses 2 wire SPI serial...
>
>If you can't do that then get 2 freqw and a regular chip. Then get some da
>ad converters.
>
>>IS it possible to have one line modulate the amplitude and the other
>>line modulate frequency. Then have a frequence counter and a level meter
>>test the frequency and amplitude. never mind, I just realized why that
>>would not work!
>>
>>New idea: Could a crystal generate a frequency high enough that the data
>>can be multiplexed fast enough to avoid missing data???
>>
>>What about 4 separate frequencies SendTip, SendMid, RecTip, RecMid. You
>>could have a switch to select whether your calc is 1 or 2. It is a
>>little less "automatic", but by having the calcs set differently, you
>>could send the data on two frequencies and recieve it on four
>>frequencies. Maybe a little plug could be added, or dip switches used to
>>select or switch crystals! You would carry two of the same crystal, and
>>let the person you want to trancieve data with borrow one, or have
>>several preset frequencies inside set by a switch. It would be VERY
>>dificult to manualy tune it with a knob or something like that.
>>
>>Richard Piotter
>>richfiles1@hotmail.com
>>
>>The Richfiles TI Page
>>http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html
>>
>>
>>______________________________________________________
>>Get Your Private, Free Email at http://www.hotmail.com
>
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