[TI-H] Re: new program

To: ti-hardware@lists.ticalc.org
Subject: [TI-H] Re: new program
From: rabidcow@juno.com
Date: Sat, 4 May 2002 14:07:37 -0700
Reply-To: ti-hardware@lists.ticalc.org

hmm, maybe connect the "calc" output to a transistor:

       /----- signal line on calc
out --|
       \>---- ground line on calc

with maybe a resistor or two thrown in because I haven't had an
electronics class in a while.

Of course this will still only give you a high/low value on the calc. 
You'd want a serial ADC to get more than that.  (or use two opamps for a
3 level signal)

-josh

On Fri, 3 May 2002 10:59:30 +0200 "Ronald Teune" <rtwolf@gmx.net> writes:
> 
> Hi there!
> Some time ago, someone wanted a microphone recorder thingy for on 
> the calc.
> I thought something like this would do it:
> 
>    /-|\
>   |  |+\____ calc
> mic\ |-/
>     -|/
> 
> (a mic on the +/- of an opamp, and the OUT connected to a calc)
> But it didn't work, maybe someone has suggestions.

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