TTL
Does anyone know if the basic stamp can talk to a TTL device and if socould you give me a snippet code example and a tip on how the example isconnected (use of resistors etc.)?
·
·
Thanks,
Wayne Fulcher
wayne@ddinet.com
·
·
·
Thanks,
Wayne Fulcher
wayne@ddinet.com
·
Comments
you
> give me a snippet code example and a tip on how the example is connected (use
of
> resistors etc.)?
TTL refers to the voltage levels used to represent logic 0 and 1 (0 and 5
VDC). The Stamps use these same voltage levels, so you can connect the 2
directly together.
Mark Hillier, VE6HVW
President, HVW Technologies Inc.
Canadian Distributors of Parallax Products and other Neat Stuff
Tel: (403)-730-8603 Fax: (403)-730-8903
See our NEW BASIC Stamp Prototyping tools !
http://www.hvwtech.com/stampstack.htm
The device has a Data Out Pin and a Clock In Pin.
Could you please give me an example of how to read data from the device?
Thanks,
Wayne Fulcher
wayne@d...
Original Message
From: Mark Hillier [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=sgqlUg5_xONxzAjszj5B4xnrOieY5D-Eyy4dKxi2m6E6CJdtO2Onfd3WWHrcS4N3U-ASp43wR6UQ]Mark@H...[/url
Sent: Thursday, June 28, 2001 4:12 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse][[/noparse]basicstamps] TTL
> Does anyone know if the basic stamp can talk to a TTL device and if so
could you
> give me a snippet code example and a tip on how the example is connected
(use of
> resistors etc.)?
TTL refers to the voltage levels used to represent logic 0 and 1 (0 and 5
VDC). The Stamps use these same voltage levels, so you can connect the 2
directly together.
Mark Hillier, VE6HVW
President, HVW Technologies Inc.
Canadian Distributors of Parallax Products and other Neat Stuff
Tel: (403)-730-8603 Fax: (403)-730-8903
See our NEW BASIC Stamp Prototyping tools !
http://www.hvwtech.com/stampstack.htm
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed with. Text in the Subject
and Body of the message will be ignored.
Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
What sort of device are you using? Is it an IC with
identifying information? Do you have a data sheet? Or
is it a device like a transducer, which gives an
analog signal that must be converted to serial digital
data by an ADC for the Stamp to deal with. I was ready
to send some code samples, but realized that I may be
answering the wrong question, so we should define the
device to be read first.
Bob Pence
--- Wayne Fulcher <wayne@d...> wrote:
> Thanks but what command do I use to read the data.
> The device has a Data Out Pin and a Clock In Pin.
> Could you please give me an example of how to read
> data from the device?
>
>
> Thanks,
> Wayne Fulcher
> wayne@d...
>
>
Original Message
> From: Mark Hillier [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=KphvSmboWs5RUDKIN4XtF6v_TGf8dNRHQ6IYzr6Uy4OSu0RaQQj0Ov_noEyhNFkgA920R1O2aUw]Mark@H...[/url
> Sent: Thursday, June 28, 2001 4:12 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] TTL
>
>
> > Does anyone know if the basic stamp can talk to a
> TTL device and if so
> could you
> > give me a snippet code example and a tip on how
> the example is connected
> (use of
> > resistors etc.)?
>
> TTL refers to the voltage levels used to represent
> logic 0 and 1 (0 and 5
> VDC). The Stamps use these same voltage levels, so
> you can connect the 2
> directly together.
>
>
> Mark Hillier, VE6HVW
> President, HVW Technologies Inc.
> Canadian Distributors of Parallax Products and other
> Neat Stuff
> Tel: (403)-730-8603 Fax: (403)-730-8903
> See our NEW BASIC Stamp Prototyping tools !
> http://www.hvwtech.com/stampstack.htm
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed
> with. Text in the Subject
> and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
>
> To UNSUBSCRIBE, just send mail to:
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The SHIFTOUT example on page 316 show how to write data to a 74HC595. This
is a typical example of how you would communicate with a device having a
Data In pin and a Clock pin. In your application, you would use the SHIFTIN
command.
Lots of older TTL devices like the 74LS164 and 74LS165 that have been used
by Stamp users for years.
Good Luck!
Mike
At 04:31 PM 6/28/2001 -0400, you wrote:
>Thanks but what command do I use to read the data.
>The device has a Data Out Pin and a Clock In Pin.
>Could you please give me an example of how to read data from the device?
>
>
>Thanks,
>Wayne Fulcher
>wayne@d...
>
>
Original Message
>From: Mark Hillier [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=J7JYoQSk84eOPH8JXyj67ZBg1UNjndRwxxlLDlrg7nbWIbPz2RPjmnWDOIvFrdhL_3rxqUjBQSqA]Mark@H...[/url
>Sent: Thursday, June 28, 2001 4:12 PM
>To: basicstamps@yahoogroups.com
>Subject: Re: [noparse][[/noparse]basicstamps] TTL
>
>
> > Does anyone know if the basic stamp can talk to a TTL device and if so
>could you
> > give me a snippet code example and a tip on how the example is connected
>(use of
> > resistors etc.)?
>
>TTL refers to the voltage levels used to represent logic 0 and 1 (0 and 5
>VDC). The Stamps use these same voltage levels, so you can connect the 2
>directly together.
>
>
>Mark Hillier, VE6HVW
>President, HVW Technologies Inc.
>Canadian Distributors of Parallax Products and other Neat Stuff
>Tel: (403)-730-8603 Fax: (403)-730-8903
>See our NEW BASIC Stamp Prototyping tools !
>http://www.hvwtech.com/stampstack.htm
>
>To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
>from the same email address that you subscribed with. Text in the Subject
>and Body of the message will be ignored.
>
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>
>
>To UNSUBSCRIBE, just send mail to:
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_________________________________
Mike Walsh
walsh@i...
or 5. To the Stamp, signals below about 1.4 vdc are
logical 0 and above are logical 1. But if I interface
directly to my 250-psi range transducer, which
produces TTL voltage, I can only read whether I am
above or below about 53 psig. Natch, I hook the signal
up to a 3-pin serial ADC, and I have lots more
information.
--- Mark Hillier <Mark@H...> wrote:
>
>
> > Does anyone know if the basic stamp can talk to a
> TTL device and if so could you
> > give me a snippet code example and a tip on how
> the example is connected (use of
> > resistors etc.)?
>
> TTL refers to the voltage levels used to represent
> logic 0 and 1 (0 and 5
> VDC). The Stamps use these same voltage levels, so
> you can connect the 2
> directly together.
>
>
> Mark Hillier, VE6HVW
> President, HVW Technologies Inc.
> Canadian Distributors of Parallax Products and other
> Neat Stuff
> Tel: (403)-730-8603 Fax: (403)-730-8903
> See our NEW BASIC Stamp Prototyping tools !
> http://www.hvwtech.com/stampstack.htm
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed
> with. Text in the Subject and Body of the message
> will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
__________________________________________________
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The dartboard has a switch matrix of (19 pins) 11 X 8 = 88 possibilities.
The card has two - 20 pin chips on it, which reads the switch matrix and has
a 6 pin (RJ45) port to interface with.
The pin outs are as follows:
1 - Ground
2 - Ground
3 - +5v
4 - Data (Out from dartboard)
5 - Clock (In to Dartboard)
6 - Ground
I don't have the board with me this second or I would try to tell you what
type of chips those are. (If it mattered).
Thanks,
Wayne Fulcher
wayne@d...
Original Message
From: Pence Bob [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=rsAWzifqZt6NNh7G67iUBJk4H5zcReqlcv1VkXlcdnKvWaoeWiED3u-0pRKEZfUGwgQfck1AuULTgZArNPbWsw]bobpence_2000@y...[/url
Sent: Thursday, June 28, 2001 4:53 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] TTL
Wayne -
What sort of device are you using? Is it an IC with
identifying information? Do you have a data sheet? Or
is it a device like a transducer, which gives an
analog signal that must be converted to serial digital
data by an ADC for the Stamp to deal with. I was ready
to send some code samples, but realized that I may be
answering the wrong question, so we should define the
device to be read first.
Bob Pence
--- Wayne Fulcher <wayne@d...> wrote:
> Thanks but what command do I use to read the data.
> The device has a Data Out Pin and a Clock In Pin.
> Could you please give me an example of how to read
> data from the device?
>
>
> Thanks,
> Wayne Fulcher
> wayne@d...
>
>
Original Message
> From: Mark Hillier [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=Ry_Re9oM3gAIgcV2s35GjQahzhMDZeUyBnffKPjS8FOK4NyEeRFqdVVfPOER5IAmvWLyaMKGQwY]Mark@H...[/url
> Sent: Thursday, June 28, 2001 4:12 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] TTL
>
>
> > Does anyone know if the basic stamp can talk to a
> TTL device and if so
> could you
> > give me a snippet code example and a tip on how
> the example is connected
> (use of
> > resistors etc.)?
>
> TTL refers to the voltage levels used to represent
> logic 0 and 1 (0 and 5
> VDC). The Stamps use these same voltage levels, so
> you can connect the 2
> directly together.
>
>
> Mark Hillier, VE6HVW
> President, HVW Technologies Inc.
> Canadian Distributors of Parallax Products and other
> Neat Stuff
> Tel: (403)-730-8603 Fax: (403)-730-8903
> See our NEW BASIC Stamp Prototyping tools !
> http://www.hvwtech.com/stampstack.htm
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed
> with. Text in the Subject
> and Body of the message will be ignored.
>
>
> Your use of Yahoo! Groups is subject to
> http://docs.yahoo.com/info/terms/
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
> from the same email address that you subscribed
> with. Text in the Subject and Body of the message
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>
>
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>
>
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Very helpful explanation for us (digiligently studying at the
same time) newbies.
THANKS!
Ken Ambrose
with enough thrust, pigs fly just fine.
---- On Thu, 28 Jun 2001, Pence Bob (bobpence_2000@y...)
wrote:
> One caveat, TTL refers to 0 _TO_ 5 volts, not always 0
> or 5. To the Stamp, signals below about 1.4 vdc are
> logical 0 and above are logical 1. But if I interface
> directly to my 250-psi range transducer, which
> produces TTL voltage, I can only read whether I am
> above or below about 53 psig. Natch, I hook the signal
> up to a 3-pin serial ADC, and I have lots more
> information.
>
> --- Mark Hillier <Mark@H...> wrote:
> >
> >
> > > Does anyone know if the basic stamp can talk to a
> > TTL device and if so could you
> > > give me a snippet code example and a tip on how
> > the example is connected (use of
> > > resistors etc.)?
> >
> > TTL refers to the voltage levels used to represent
> > logic 0 and 1 (0 and 5
> > VDC). The Stamps use these same voltage levels, so
> > you can connect the 2
> > directly together.
> >
> >
> > Mark Hillier, VE6HVW
> > President, HVW Technologies Inc.
> > Canadian Distributors of Parallax Products and other
> > Neat Stuff
> > Tel: (403)-730-8603 Fax: (403)-730-8903
> > See our NEW BASIC Stamp Prototyping tools !
> > http://www.hvwtech.com/stampstack.htm
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed
> > with. Text in the Subject and Body of the message
> > will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> >
> >
>
>
> __________________________________________________
> Do You Yahoo!?
> Get personalized email addresses from Yahoo! Mail
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in the
> Subject and Body of the message will be ignored.
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> http://docs.yahoo.com/info/terms/
>
>
>
>
> The dartboard has a switch matrix of (19 pins) 11 X 8 = 88 possibilities.
> The card has two - 20 pin chips on it, which reads the switch matrix and has a
6
> pin (RJ45) port to interface with. The pin outs are as follows: 1 - Ground 2 -
> Ground 3 - +5v 4 - Data (Out from dartboard) 5 - Clock (In to Dartboard) 6 -
> Ground
>
> I don't have the board with me this second or I would try to tell you what
> type of chips those are. (If it mattered).
Sounds like a synchronous serial connection; in which case you would use
the SHIFTIN command. See the Stamp Manual for the command syntax and
some good examples.
In essence, you connect one Stamp pin to the Clock pin, and another to the
data pin. The SHIFTIN command toggles the clock line and then looks at the
data line. It repeats this process a number of times (defined by you within
the SHIFTIN command) and collects all the bits. You need 7 bits to
represent decimal 88 so it's likely an 8-bit word that comes out of the
dartboard.
Mark Hillier, VE6HVW
President, HVW Technologies Inc.
Canadian Distributors of Parallax Products and other Neat Stuff
Tel: (403)-730-8603 Fax: (403)-730-8903
See our NEW BASIC Stamp Prototyping tools !
http://www.hvwtech.com/stampstack.htm
It would seem that there is not a third or forth pin
to deal with, at least not at this connection point.
So connect +5 and grounds, and pick a couple of Stamp
I/O pins for clock and data. The Shiftin command is
your best choice, e.g.:
clk CON 0 ' clock pin
dio CON 1 ' data pin
ad VAR WORD ' analog data
SHIFTIN dio, clk, MSBPOST, [noparse][[/noparse]ad\16]
DEBUG BIN16 ad, CR
Look for any repetition in ad to see if the data is
less than 16 bits wide. The MSBPOST is a guess - a
guess that data follows the clock pulse (versus
MSBPRE, data present on data pin before the clock
pulse), and a guess that data is sent
most-significant-bit first, versus LSBPOST and LSBPRE.
(MSB first implies that the nibble 1010 = 10 decimal,
while LSB first would make it 5 decimal. I'm not used
to thinking of 1010 as 5 and 0101 as 10, but some
devices use this format, known as "big-endian." Most
use the "little-endian" format where the MSB comes
first and the LSB last - the littler part at the end.)
If this doesn't produce sensible results, there is a
more manual approach.
I have an application with TI 'LS674 shift registers
that just didn't come out right using SHIFTIN. So I
built a manual version (I may revisit SHIFTIN or the
delays built into this code, but I maintain that it
just wasn't working out).
clk CON 0 ' clock pin
dio CON 1 ' data pin
ad VAR WORD ' analog data
i VAR NIB ' counter
HIGH clk
FOR j = 0 TO 15
ad = ad << 1 ' shift left 1 bit,
' implied little-endian
dio = IN1 ' Aside: can anyone do this better?
' So far I am either doing this for
' clarity or using literals like IN1
' in lines like the next one where
' I would much rather use a constant
' or variable.
ad = ad + dio
' pulse clock so that next data bit goes to dio
LOW clk
PAUSE 10 ' milliseconds
HIGH clk
PAUSE 10
NEXT
DEBUG BIN16 ad, CR
Hope this helps. The "<<" above can be replaced by a
">>" if the item ends up being big-endian. I use it
for DIP switches, so big-endian and little-endian
don't matter in my app.
Bob Pence
--- Wayne Fulcher <wayne@d...> wrote:
> Basically the device is a card that is connected to
> a dartboard.
> The dartboard has a switch matrix of (19 pins) 11 X
> 8 = 88 possibilities.
> The card has two - 20 pin chips on it, which reads
> the switch matrix and has
> a 6 pin (RJ45) port to interface with.
> The pin outs are as follows:
> 1 - Ground
> 2 - Ground
> 3 - +5v
> 4 - Data (Out from dartboard)
> 5 - Clock (In to Dartboard)
> 6 - Ground
>
> I don't have the board with me this second or I
> would try to tell you what
> type of chips those are. (If it mattered).
>
> Thanks,
> Wayne Fulcher
> wayne@d...
>
>
Original Message
> From: Pence Bob [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=tCl9H8GtTws79cmn8qtNdbj7-C8mrQB2v91VtbEy3tFkSOL43DPI4qxEExZ_XDT3Fa19DM8VmLc3ysOo4Xt2Ng]bobpence_2000@y...[/url
> Sent: Thursday, June 28, 2001 4:53 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] TTL
>
> Wayne -
>
> What sort of device are you using? Is it an IC with
> identifying information? Do you have a data sheet?
> Or
> is it a device like a transducer, which gives an
> analog signal that must be converted to serial
> digital
> data by an ADC for the Stamp to deal with. I was
> ready
> to send some code samples, but realized that I may
> be
> answering the wrong question, so we should define
> the
> device to be read first.
>
> Bob Pence
>
>
> --- Wayne Fulcher <wayne@d...> wrote:
> > Thanks but what command do I use to read the data.
> > The device has a Data Out Pin and a Clock In Pin.
> > Could you please give me an example of how to read
> > data from the device?
> >
> >
> > Thanks,
> > Wayne Fulcher
> > wayne@d...
> >
> >
Original Message
> > From: Mark Hillier [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=3TjJhwRFd6jjDPAewBtlaohWUQ0w3foT9FKf8RmpEpqc8-DMN0OoC_QQUhJq8fEjknZGz_vTB1Ec]Mark@H...[/url
> > Sent: Thursday, June 28, 2001 4:12 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse][[/noparse]basicstamps] TTL
> >
> >
> > > Does anyone know if the basic stamp can talk to
> a
> > TTL device and if so
> > could you
> > > give me a snippet code example and a tip on how
> > the example is connected
> > (use of
> > > resistors etc.)?
> >
> > TTL refers to the voltage levels used to represent
> > logic 0 and 1 (0 and 5
> > VDC). The Stamps use these same voltage levels, so
> > you can connect the 2
> > directly together.
> >
> >
> > Mark Hillier, VE6HVW
> > President, HVW Technologies Inc.
> > Canadian Distributors of Parallax Products and
> other
> > Neat Stuff
> > Tel: (403)-730-8603 Fax: (403)-730-8903
> > See our NEW BASIC Stamp Prototyping tools !
> > http://www.hvwtech.com/stampstack.htm
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed
> > with. Text in the Subject
> > and Body of the message will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> >
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed
> > with. Text in the Subject and Body of the message
> > will be ignored.
> >
> >
> > Your use of Yahoo! Groups is subject to
> > http://docs.yahoo.com/info/terms/
> >
> >
>
>
> __________________________________________________
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trying to assign a bit value to a constant, which
tends to work better with variables. Let's pretend
that I used a bit variable instead, or just did ad =
ad + IN1, which brings back up my question in the
comments (viz I can choose which output pin to set
high or low with a variable, constant, or expression
(HIGH pin_number_var), but can I read an input pin
with a variable (ad = ad +
IN(current_shift_register))?
Bob Pence
--- Pence Bob <bobpence_2000@y...> wrote:
> Wayne -
>
> It would seem that there is not a third or forth pin
> to deal with, at least not at this connection point.
> So connect +5 and grounds, and pick a couple of
> Stamp
> I/O pins for clock and data. The Shiftin command is
> your best choice, e.g.:
>
> clk CON 0 ' clock pin
> dio CON 1 ' data pin
> ad VAR WORD ' analog data
> SHIFTIN dio, clk, MSBPOST, [noparse][[/noparse]ad\16]
> DEBUG BIN16 ad, CR
>
> Look for any repetition in ad to see if the data is
> less than 16 bits wide. The MSBPOST is a guess - a
> guess that data follows the clock pulse (versus
> MSBPRE, data present on data pin before the clock
> pulse), and a guess that data is sent
> most-significant-bit first, versus LSBPOST and
> LSBPRE.
> (MSB first implies that the nibble 1010 = 10
> decimal,
> while LSB first would make it 5 decimal. I'm not
> used
> to thinking of 1010 as 5 and 0101 as 10, but some
> devices use this format, known as "big-endian." Most
> use the "little-endian" format where the MSB comes
> first and the LSB last - the littler part at the
> end.)
>
> If this doesn't produce sensible results, there is a
> more manual approach.
>
> I have an application with TI 'LS674 shift registers
> that just didn't come out right using SHIFTIN. So I
> built a manual version (I may revisit SHIFTIN or the
> delays built into this code, but I maintain that it
> just wasn't working out).
>
> clk CON 0 ' clock pin
> dio CON 1 ' data pin
> ad VAR WORD ' analog data
> i VAR NIB ' counter
> HIGH clk
> FOR j = 0 TO 15
> ad = ad << 1 ' shift left 1 bit,
> ' implied little-endian
> dio = IN1 ' Aside: can anyone do this better?
> ' So far I am either doing this for
> ' clarity or using literals like
> IN1
> ' in lines like the next one where
> ' I would much rather use a
> constant
> ' or variable.
> ad = ad + dio
> ' pulse clock so that next data bit goes to dio
> LOW clk
> PAUSE 10 ' milliseconds
> HIGH clk
> PAUSE 10
> NEXT
> DEBUG BIN16 ad, CR
>
> Hope this helps. The "<<" above can be replaced by a
> ">>" if the item ends up being big-endian. I use it
> for DIP switches, so big-endian and little-endian
> don't matter in my app.
>
> Bob Pence
>
> --- Wayne Fulcher <wayne@d...> wrote:
> > Basically the device is a card that is connected
> to
> > a dartboard.
> > The dartboard has a switch matrix of (19 pins) 11
> X
> > 8 = 88 possibilities.
> > The card has two - 20 pin chips on it, which reads
> > the switch matrix and has
> > a 6 pin (RJ45) port to interface with.
> > The pin outs are as follows:
> > 1 - Ground
> > 2 - Ground
> > 3 - +5v
> > 4 - Data (Out from dartboard)
> > 5 - Clock (In to Dartboard)
> > 6 - Ground
> >
> > I don't have the board with me this second or I
> > would try to tell you what
> > type of chips those are. (If it mattered).
> >
> > Thanks,
> > Wayne Fulcher
> > wayne@d...
> >
> >
Original Message
> > From: Pence Bob [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=c5LyLLIKoAzBZlM1qm0Of-0yZsmBodCFborOVOaJDcoiHP4bnG7cnDRg7Zc2_YTyle93p8OOvCjxgz-QsHnKfTQ5]bobpence_2000@y...[/url
> > Sent: Thursday, June 28, 2001 4:53 PM
> > To: basicstamps@yahoogroups.com
> > Subject: RE: [noparse][[/noparse]basicstamps] TTL
> >
> > Wayne -
> >
> > What sort of device are you using? Is it an IC
> with
> > identifying information? Do you have a data sheet?
> > Or
> > is it a device like a transducer, which gives an
> > analog signal that must be converted to serial
> > digital
> > data by an ADC for the Stamp to deal with. I was
> > ready
> > to send some code samples, but realized that I may
> > be
> > answering the wrong question, so we should define
> > the
> > device to be read first.
> >
> > Bob Pence
> >
> >
> > --- Wayne Fulcher <wayne@d...> wrote:
> > > Thanks but what command do I use to read the
> data.
> > > The device has a Data Out Pin and a Clock In
> Pin.
> > > Could you please give me an example of how to
> read
> > > data from the device?
> > >
> > >
> > > Thanks,
> > > Wayne Fulcher
> > > wayne@d...
> > >
> > >
Original Message
> > > From: Mark Hillier [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=YDTrzS8ic8-VOUsPCTFkHDBek7atla3K6j4AoYqZqp4Ce-Ikgawy98gB-AosLoayQcTUKnpBAxo]Mark@H...[/url
> > > Sent: Thursday, June 28, 2001 4:12 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: Re: [noparse][[/noparse]basicstamps] TTL
> > >
> > >
> > > > Does anyone know if the basic stamp can talk
> to
> > a
> > > TTL device and if so
> > > could you
> > > > give me a snippet code example and a tip on
> how
> > > the example is connected
> > > (use of
> > > > resistors etc.)?
> > >
> > > TTL refers to the voltage levels used to
> represent
> > > logic 0 and 1 (0 and 5
> > > VDC). The Stamps use these same voltage levels,
> so
> > > you can connect the 2
> > > directly together.
> > >
> > >
> > > Mark Hillier, VE6HVW
> > > President, HVW Technologies Inc.
> > > Canadian Distributors of Parallax Products and
> > other
> > > Neat Stuff
> > > Tel: (403)-730-8603 Fax: (403)-730-8903
> > > See our NEW BASIC Stamp Prototyping tools !
> > > http://www.hvwtech.com/stampstack.htm
> > >
> > > To UNSUBSCRIBE, just send mail to:
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> > > from the same email address that you subscribed
> > > with. Text in the Subject
> > > and Body of the message will be ignored.
> > >
> > >
> > > Your use of Yahoo! Groups is subject to
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> > >
> > >
> >
> >
>
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