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motion detector?

T

Tristar500

Jan 1, 1970
0
Hi Guys, I'm working on a project that is supposed to encourage kids to
ride a stationary bike for three minutes. The plan is to have the rider
hit a button when they get on the bike and that sets a series of timers
going each one triggering a light or embedded sound bit encouraging the
kid and perhaps announcing how much time is left.

Here's the part I'm having trouble with. The bike needs to detect
whether or not the kid is actually pedaling and it not reset itself. I
was thinking a hall sensor or a proximity sensor (the type used in
automation) or perhaps a reed switch mounted on the hub of the wheel
with a small weight on the trigger that would depress once centrifugal
force pushed it out.

In short, Kid gets on bike, hits start button, three minutes go by and
bells and whistles sound. If the kid stops pedaling at any time he has
to start over.

Any ideas? Simple if possible.

Lawrence

J

John Fields

Jan 1, 1970
0
Hi Guys, I'm working on a project that is supposed to encourage kids to
ride a stationary bike for three minutes. The plan is to have the rider
hit a button when they get on the bike and that sets a series of timers
going each one triggering a light or embedded sound bit encouraging the
kid and perhaps announcing how much time is left.

Here's the part I'm having trouble with. The bike needs to detect
whether or not the kid is actually pedaling and it not reset itself. I
was thinking a hall sensor or a proximity sensor (the type used in
automation) or perhaps a reed switch mounted on the hub of the wheel
with a small weight on the trigger that would depress once centrifugal
force pushed it out.

In short, Kid gets on bike, hits start button, three minutes go by and
bells and whistles sound. If the kid stops pedaling at any time he has
to start over.

Any ideas? Simple if possible.

---
Click on:

or check "Motion detector (from seb)" on
alt.binaries.schematics.electronic.

B

Brian

Jan 1, 1970
0
Tristar500 said:
Hi Guys, I'm working on a project that is supposed to encourage kids to
ride a stationary bike for three minutes. The plan is to have the rider
hit a button when they get on the bike and that sets a series of timers
going each one triggering a light or embedded sound bit encouraging the
kid and perhaps announcing how much time is left.

Here's the part I'm having trouble with. The bike needs to detect
whether or not the kid is actually pedaling and it not reset itself. I
was thinking a hall sensor or a proximity sensor (the type used in
automation) or perhaps a reed switch mounted on the hub of the wheel
with a small weight on the trigger that would depress once centrifugal
force pushed it out.

In short, Kid gets on bike, hits start button, three minutes go by and
bells and whistles sound. If the kid stops pedaling at any time he has
to start over.

Any ideas? Simple if possible.

Lawrence

You could hook a small DC motor to the wheel and use it as a generator.
You could then use the DC voltage to do whatever you wanted.

Brian

E

ehsjr

Jan 1, 1970
0
Tristar500 said:
Hi Guys, I'm working on a project that is supposed to encourage kids to
ride a stationary bike for three minutes. The plan is to have the rider
hit a button when they get on the bike and that sets a series of timers
going each one triggering a light or embedded sound bit encouraging the
kid and perhaps announcing how much time is left.

Here's the part I'm having trouble with. The bike needs to detect
whether or not the kid is actually pedaling and it not reset itself. I
was thinking a hall sensor or a proximity sensor (the type used in
automation) or perhaps a reed switch mounted on the hub of the wheel
with a small weight on the trigger that would depress once centrifugal
force pushed it out.

In short, Kid gets on bike, hits start button, three minutes go by and
bells and whistles sound. If the kid stops pedaling at any time he has
to start over.

Any ideas? Simple if possible.

Lawrence

A magnet mounted on the crankarm (for the pedal
on the side opposite the main drive gear) and a reed
switch mounted to the frame such that the reed transfers
each time the crankarm passes by can be used to generate
pulses. Feed them into a simple missing pulse detector.
http://www.uoguelph.ca/~antoon/circ/mispulse.htm

Ed

T

Tristar500

Jan 1, 1970
0
Ed, I like it! reed switch makes much more sense then the coil idea.

J

John Fields

Jan 1, 1970
0
Ed, I like it! reed switch makes much more sense then the coil idea.

---
The reed switch will work nicely with the circuit I posted for you on
alt.binaries.schematics.electronic.

If you received it I'd appreciate an acknowledgement.

Thanks,

M

Michael A. Terrell

Jan 1, 1970
0
John said:
The reed switch will work nicely with the circuit I posted for you on
alt.binaries.schematics.electronic.

If you received it I'd appreciate an acknowledgement.

Thanks,

Not likely, John, since he is posting through Google.

--
Link to my "Computers for disabled Veterans" project website deleted
after threats were telephoned to my church.

Michael A. Terrell
Central Florida

T

Tristar500

Jan 1, 1970
0
Hi John, I looked for something on alt.binaries.schematics.electronic
but didn't see anything.

Perhaps I was too late? I didn't know it was coming until now.

Lawrence

J

John Fields

Jan 1, 1970
0
Hi John, I looked for something on alt.binaries.schematics.electronic
but didn't see anything.

Perhaps I was too late? I didn't know it was coming until now.

---
No, it's just that Google doesn't archive binaries, so you'll never
see it from Google groups, and since your ISP is Time-Warner
Road-Runner they don't provide access to Usenet directly, so you're
stuck.

I'll email it to you.

J

John Fields

Jan 1, 1970
0
Not likely, John, since he is posting through Google.

---
Yeah, you're right; I missed that.

Thanks.

Bummer about that psycho interfering with your good work...

M

Michael A. Terrell

Jan 1, 1970
0
Its easy enough to miss. No problem. ;-)
Bummer about that psycho interfering with your good work...

I reported the call to the Sheriff, then found that the one who made
the call was bragging about it on Then he
followed that with threats that he was going to have the Florida State
Attorney General stop my project. One of the people collecting
computers for me works for the Florida State Attorney General, so that
would be interesting.

His ISP has already cut off his usenet access, now he's using Google
Groups to spout more garbage. There is no one on that group willing to
flame him like they should, and I have to ignore him till the legal
matter is settled.

He hasn't stopped the project. My goal is to collect, repair, and
distribute 100 complete used computer systems to Disabled Veterans in my
area from July 1, 2005 to July 1, 2006. I may be 100% disabled, but I
can still work an hour or two a day, most days so I plan on staying
busy.

--
Link to my "Computers for disabled Veterans" project website deleted
after threats were telephoned to my church.

Michael A. Terrell
Central Florida

M

Michael A. Terrell

Jan 1, 1970
0
John said:
---
No, it's just that Google doesn't archive binaries, so you'll never
see it from Google groups, and since your ISP is Time-Warner
Road-Runner they don't provide access to Usenet directly, so you're
stuck.

I'll email it to you.

TWC/brighthouse had their own news servers when I had their service.
They had regional servers for each service area. Acoording to the TWC
website they still offer access to newsgroups:

FAQ >> Road Runner High-Speed Online

Q: Are newsgroups available?

A: Yes, 45,000 newsgroups are available through Road Runner. We've also
included a number of newsgroups specific to Road Runner. These
newsgroups are designed to allow subscribers to talk about and get
answers to general questions about the service.

In order to use newsgroups, you need a news client. We install and
configure the Microsoft Outlook Express news client during your Road
Runner installation; however, there are a number of other news clients
available. With Microsoft Outlook Express, you will be able to search
for newsgroups, read articles from and post articles to the newsgroup,
and download binary attachments to newsgroup articles.

--
Link to my "Computers for disabled Veterans" project website deleted
after threats were telephoned to my church.

Michael A. Terrell
Central Florida

E

ehsjr

Jan 1, 1970
0
John said:
---
No, it's just that Google doesn't archive binaries, so you'll never
see it from Google groups, and since your ISP is Time-Warner
Road-Runner they don't provide access to Usenet directly, so you're
stuck.

I'll email it to you.

Glad to see he's going to get it. It's nice.

Ed

J

John Fields

Jan 1, 1970
0
Its easy enough to miss. No problem. ;-)

I reported the call to the Sheriff, then found that the one who made
the call was bragging about it on Then he
followed that with threats that he was going to have the Florida State
Attorney General stop my project. One of the people collecting
computers for me works for the Florida State Attorney General, so that
would be interesting.

His ISP has already cut off his usenet access, now he's using Google
Groups to spout more garbage. There is no one on that group willing to
flame him like they should, and I have to ignore him till the legal
matter is settled.

He hasn't stopped the project. My goal is to collect, repair, and
distribute 100 complete used computer systems to Disabled Veterans in my
area from July 1, 2005 to July 1, 2006. I may be 100% disabled, but I
can still work an hour or two a day, most days so I plan on staying
busy.

J

John Fields

Jan 1, 1970
0
TWC/brighthouse had their own news servers when I had their service.
They had regional servers for each service area. Acoording to the TWC
website they still offer access to newsgroups:

FAQ >> Road Runner High-Speed Online

Q: Are newsgroups available?

A: Yes, 45,000 newsgroups are available through Road Runner. We've also
included a number of newsgroups specific to Road Runner. These
newsgroups are designed to allow subscribers to talk about and get
answers to general questions about the service.

In order to use newsgroups, you need a news client. We install and
configure the Microsoft Outlook Express news client during your Road
Runner installation; however, there are a number of other news clients
available. With Microsoft Outlook Express, you will be able to search
for newsgroups, read articles from and post articles to the newsgroup,
and download binary attachments to newsgroup articles.

J

Jan 1, 1970
0
M

Michael A. Terrell

Jan 1, 1970
0
John said:
God bless you, Michael.

Thank you, John. May he bless you, as well.

Like I've said since I was laid off and got sick over three years
ago: i was going to find something to occupy my time when I was well
enough. This will not only help me, but the kids at my church I am
teaching to fix computer problems, and the disabled veterans who will
have something they couldn't afford on their pensions.

I am thinking about setting up a "Safe online browsing and computer
care course" for a $25 per head donation to help pay for the gasoline and other supplies I am paying for out of my pocket. I think that 5, two hour sessions once a week for that price is fair, and will save anyone who takes the course more than that in aggravation and repair bills for cleaning the garbage from their computers. What do you think of the idea? -- Link to my "Computers for disabled Veterans" project website deleted after threats were telephoned to my church. Michael A. Terrell Central Florida J John Fields Jan 1, 1970 0 Thank you, John. May he bless you, as well. Like I've said since I was laid off and got sick over three years ago: i was going to find something to occupy my time when I was well enough. This will not only help me, but the kids at my church I am teaching to fix computer problems, and the disabled veterans who will have something they couldn't afford on their pensions. I am thinking about setting up a "Safe online browsing and computer care course" for a$25 per head donation to help pay for the gasoline
and other supplies I am paying for out of my pocket. I think that 5, two
hour sessions once a week for that price is fair, and will save anyone
who takes the course more than that in aggravation and repair bills for
cleaning the garbage from their computers. What do you think of the
idea?

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