BSII Jogging Speed Recorder

Archiver

Hi all,
I'm interested in building a device using a BSII computer that
records my jogging speed and have the data download to my PC.
Since I am quite a newbie to Basic Stamp, I need some general idea of
how my hardware and software should look like. I plan on using the
ADXL150 accelerometer, ADC0831 A/D Converter, and the 24LC128
EEProm. For software I will use Parallax's compiler. Any assistance
would be greatly appreciated!

Thanks a bunch!

Archiver

Well, I'm not sure if the accelerometer will be very helpful except
measuring how hard your leg hits the ground. Once you are 'at
speed', there is not longer any acceleration. If you use the
accelerometer to count the intervals of your foot-falls over time,
knowing your stride, you could convert that to speed.

Timing is a little rough without a real-time clock. Consider putting
on a DS1302 for real-time data collection.

We are currently completing a new chapter to the Stamps-in-class
Industrial control series on using the real time clock for event
logging and such.

Additionally, we will post the new 'beta' of S-Plot Pro on our
website which will includes data plotting of time-stamped and/or
timed-interval plotting per user requests. (post it around Dec 10th).

Just some food for thought.
-Martin
http://www.selmaware.com/s-plot



--- In basicstamps@egroups.com, "Dustin Hsu" <dintin5@M...> wrote:
> Hi all,
> I'm interested in building a device using a BSII computer that
> records my jogging speed and have the data download to my PC.
> Since I am quite a newbie to Basic Stamp, I need some general idea
of
> how my hardware and software should look like. I plan on using the
> ADXL150 accelerometer, ADC0831 A/D Converter, and the 24LC128
> EEProm. For software I will use Parallax's compiler. Any
assistance
> would be greatly appreciated!
>
> Thanks a bunch!

Archiver

I agree with Martin, stride length and frequency is about as accurate as any
on-board approach for less than $10K. But, in my research on human posture
and gait, I've started to see journal articles that used GPS to compute
average speed of walking/running humans. If you give it a try with a stamp
interface, tell us how you do it.
Dennis

---

Original Message

---

From: Martin Hebel [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=-J39vtQOztjvcfKZfJS9ZXZkiTMErzkrUE4MPZGUAze7QszaCos_U5YO7gVT9JciwaFEPbeFtXU_Em4]martin@s...[/url
Sent: Tuesday, November 28, 2000 9:25 PM
To: basicstamps@egroups.com
Subject: [noparse][[/noparse]basicstamps] Re: BSII Jogging Speed Recorder


Well, I'm not sure if the accelerometer will be very helpful except
measuring how hard your leg hits the ground. Once you are 'at
speed', there is not longer any acceleration. If you use the
accelerometer to count the intervals of your foot-falls over time,
knowing your stride, you could convert that to speed.

Timing is a little rough without a real-time clock. Consider putting
on a DS1302 for real-time data collection.

We are currently completing a new chapter to the Stamps-in-class
Industrial control series on using the real time clock for event
logging and such.

Additionally, we will post the new 'beta' of S-Plot Pro on our
website which will includes data plotting of time-stamped and/or
timed-interval plotting per user requests. (post it around Dec 10th).

Just some food for thought.
-Martin
http://www.selmaware.com/s-plot



--- In basicstamps@egroups.com, "Dustin Hsu" <dintin5@M...> wrote:
> Hi all,
> I'm interested in building a device using a BSII computer that
> records my jogging speed and have the data download to my PC.
> Since I am quite a newbie to Basic Stamp, I need some general idea
of
> how my hardware and software should look like. I plan on using the
> ADXL150 accelerometer, ADC0831 A/D Converter, and the 24LC128
> EEProm. For software I will use Parallax's compiler. Any
assistance
> would be greatly appreciated!
>
> Thanks a bunch!