RE: TI-H: pressure sensor
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RE: TI-H: pressure sensor
>Yikes! I did not know that!
obviosly.
>my sincerest apologizes for the faux pas... no offense intended...
>Can you point me to information on that temperature sensor?
here it is along with other ti-hardware sites i know:
http://www.geocities.com/SiliconValley/Bay/2267/sensor.html (temp)
http://www.geocities.com/SiliconValley/3061/index.html
http://www.geocities.com/SiliconValley/Lakes/5081/Richfiles.html
http://www.clinet.fi/~ozone/mbus/
http://horizon.nws.net/~bryan/extend/
http://cccsrv.trevano.ch/~blutz/TIGen/TIElectronics.html
and of coarse
www.ticalc.org
It's clear I
>know less about this than I thought.
apology accepted :)
>TIA
>matt zimmerman
>biochemist marginally extraordinare
>
>> ----------
>> From: Zimmerman, Matthew D (ZIMMERMAN)
>> Reply To: ti-hardware@lists.ticalc.org
>> Sent: Saturday, January 31, 1998 11:00 PM
>> To: 'ti-hardware@lists.ticalc.org'
>> Subject: RE: TI-H: pressure sensor
>>
>>
>> I just signed up to this list, but I'd just like to warn you all
>> that I think the TI's input protocol is a lot more complicated than
>> that. Yes, you convert the voltage into a digital signal, but you
also
>> have to frame that data with a whole bunch of control characters to
>> tell
>> the TI that you have real data, and not just random noise. A project
>> similar to this-- ie, designing a voltage meter on a TI-- is my
senior
>> year research. I'll be glad to help you out in any way, but it is
>> quite
>> a bit harder than you might think.... Sorry for the news...
>>
>> matt zimmerman
>> biochemist extraordinare
>>
>> > ----------
>> > From: ryan pogge[SMTP:ryanpogge@hotmail.com]
>> > Reply To: ti-hardware@lists.ticalc.org
>> > Sent: Saturday, January 31, 1998 9:12 PM
>> > To: ti-hardware@lists.ticalc.org
>> > Subject: Re: TI-H: pressure sensor
>> >
>> >
>> > sounds cool to me anyone want to help me out, i can build it but i
>> > cant
>> > write a driver.
>> > and i would realy like to build it :)
>> >
>> >
>> > >Use an I2C A/D converter!
>> > >
>> > >
>> > >> ____
>> > >> / \ pin 1 is VCC 5 volts
>> > >> | o | pin 2 is ground
>> > >> \____/ pin 3 is Vout (betwean 0-5 volts)
>> > >> /||||\ pins 4-6 are not used
>> > >> | |||| |
>> > >> 1 2345 6 _____
>> > > | ||_____| I2C |____________SCL
>> > > |_|______| A/D |____/\/\
>> > > | |______| |________|___SD I'm not sure about the
>> > > | | |_____| Interface side of the I2C chip
>> > > + -
>> > >
>> > >I'm not exactly sure if this is right, but I'm sure it will work
in
>>
>> > it's
>> > >most basic form. There may be things like a reference voltage or
>> > >something like that. If anyone knows anything about an I2C A/D
>> > >converter, fix this schematic.
>> > >
>> > >Richard Piotter
>> > >richfiles1@hotmail.com
>> > >
>> > >>
>> > >>I was wondering if we could make a pressure sensor for the 85(or
>> any
>> >
>> > >>other calc for that matter.
>> > >>
>> > >>I have a motorola mpx4100a presure sensor.
>> > >>it looks like this.
>> > >>
>> > >> ____
>> > >> / \ pin 1 is VCC 5 volts
>> > >> | o | pin 2 is ground
>> > >> \____/ pin 3 is Vout (betwean 0-5 volts)
>> > >> /||||\ pins 4-6 are not used
>> > >> | |||| |
>> > >> 1 2345 6
>> > >>
>> > >>is it possible to have a assembly program sense the voltage
>> comeing
>> >
>> > >>into the link port? i dont know assembly so i would need some one
>> to
>> >
>> > >>write the driver..but the pressure is related to Vout by an
>> equation
>> >
>> > >>which you can find at along with the data sheet here:
>> >
>>
>>http://mot2.indirect.com/cgi-bin/get?/books/dl200/pdf/mpx4100rev*.pd
>> > f
>> > >>
>> > >>if anyone thinks this is a possible project or would like to
help.
>> > >>please let me know.
>> > >>the hardware is easy i just need someone to help with drivers.
>> > >>
>> > >>
>> > >>
>> > >>______________________________________________________
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>> > >>
>> > >
>> > >
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>> >
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>
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