Distance & Speed thing again. . .
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Posts: 46,084
Thanks for the help,
About the speed issue,
Isn't the clock on the stamp accurate enough if say,
10 pluses in 10 microseconds = x.x mph ???
I know that the clock isn't very accurate, but wouldn't it do that?
What about sending the data by th rf transceivers ?? can the stamp do
that, and count the pulses - not missing any ??
Or should I go after a pic that can multitask ??
Thanks again for your help,
Marlin Schrock
About the speed issue,
Isn't the clock on the stamp accurate enough if say,
10 pluses in 10 microseconds = x.x mph ???
I know that the clock isn't very accurate, but wouldn't it do that?
What about sending the data by th rf transceivers ?? can the stamp do
that, and count the pulses - not missing any ??
Or should I go after a pic that can multitask ??
Thanks again for your help,
Marlin Schrock
Comments
> that, and count the pulses - not missing any ??
When you send data you are not counting.
Have a look at http://www.al-williams.com/awce/pak7.htm. You can measure the
time which will tell you your speed and count the number of wheel
revolutions which would give you the distance. All at the same time and all
at the same time the Stamp is doing something else.
Regards,
Al Williams
AWC
* Basic Stamp FAQ at http://www.al-williams.com/wd5gnr/stampfaq.htm
So Al, when are you going to start making boards for the Pak's?
Seriously though, do you see any problems operating a Pak7, Pak8, along with
the BS2E?
Original Message
From: "Al Williams" <alw@a...>
To: <basicstamps@egroups.com>
Sent: Tuesday, November 21, 2000 5:22 PM
Subject: RE: [noparse][[/noparse]basicstamps] Distance & Speed thing again. . .
> > What about sending the data by th rf transceivers ?? can the stamp do
> > that, and count the pulses - not missing any ??
>
> When you send data you are not counting.
>
> Have a look at http://www.al-williams.com/awce/pak7.htm. You can measure
the
> time which will tell you your speed and count the number of wheel
> revolutions which would give you the distance. All at the same time and
all
> at the same time the Stamp is doing something else.
>
> Regards,
>
> Al Williams
> AWC
> * Basic Stamp FAQ at http://www.al-williams.com/wd5gnr/stampfaq.htm
>
>
>
>
No you should have no problems. You can use separate resonators, or if you
are tight for space, it is possible to run one chip off the other chip's
oscillator but this increases the loading problems mentioned earlier. The
PAKs are made to use with shared data/clock lines. I've heard of someone
using a single data line, but using a different clock for each chip thus
saving the enable line overhead, but I haven't tried that myself.
We've consider making some small PCBs for the PAKs. However, most of our big
customers use them on other boards anyway. You can take the little board
that Radio Shack sells that mimics a solderless breadboard and cut it down
to two rows of .6" holes. Then you can put the PAK and the resonator
together on the board. I'll try to put another one of those together and
post a picture sometime.
Regards,
Al Williams
AWC
* Expand your Stamp I/O: http://www.al-williams.com/awce/pak3.htm
>
Original Message
> From: Charley Webb [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=UQJl70pT0Kzvk8yGQdIdyTXY4BIKqIkqJSfT_qeEFPDVFQjcpH0CYR5UKladpc3i4v5Nu8f6emLeEg0rN73zobmP]charley@c...[/url
> Sent: Tuesday, November 21, 2000 5:06 PM
> To: basicstamps@egroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Distance & Speed thing again. . .
>
>
> Aww man, just when I thought I wuz done with making up boards [noparse]:)[/noparse].
>
> So Al, when are you going to start making boards for the Pak's?
>
> Seriously though, do you see any problems operating a Pak7, Pak8,
> along with
> the BS2E?
>
>
>
>
Original Message
> From: "Al Williams" <alw@a...>
> To: <basicstamps@egroups.com>
> Sent: Tuesday, November 21, 2000 5:22 PM
> Subject: RE: [noparse][[/noparse]basicstamps] Distance & Speed thing again. . .
>
>
> > > What about sending the data by th rf transceivers ?? can the stamp do
> > > that, and count the pulses - not missing any ??
> >
> > When you send data you are not counting.
> >
> > Have a look at http://www.al-williams.com/awce/pak7.htm. You can measure
> the
> > time which will tell you your speed and count the number of wheel
> > revolutions which would give you the distance. All at the same time and
> all
> > at the same time the Stamp is doing something else.
> >
> > Regards,
> >
> > Al Williams
> > AWC
> > * Basic Stamp FAQ at http://www.al-williams.com/wd5gnr/stampfaq.htm
> >
> >
> >
> >
>
>
>