[RE: [[basicstamps] Room Mapping]]
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Posts: 46,084
Sorry, I haven't built them yet. It's just a concept at present. Each beacon
can be very inexpensive, or could get more complicated. An IR emitter could
be mounted on a servo, or a mirror on the servo, and different codes
transmitted based on the angle. Small bots could even have beacon
transmitters.
A beacon could use a TV remote IC, 3V, low current. Various intensities might
be useful for detecting range (and perhaps to avoid reflections, or take
advantage of them too).
The tabrobotkit yahoo group has some files on the chip that their IR remotes
use. There are lots of chips for that, and also on the receiving end. I have
a couple I got from Radio Shack, and 3 different ones from Jameco.
As for visualization, consider placing a flashlight on the floor so it
projects a beam of light. A robot could follow the beam and determine the
intensity. Now consider two more flashlights projecting beams that intersect
with the other ones, to form a triangle. With signals encoded in the beams,
the robot can tell which beam of light it is following, and what direction it
is going, toward or away from each emitter.
That's the rough idea; I don't know how well it might work out.
Phil.Kruger@A... wrote:
> Can you be more specific about your beacons. Are they for ID of room or
will
> your bot use for navigation. How did you construct? Battery? Powered
outlet?
> Inexpensive to build if I wanted bunches?
> Thanks
>
>
Original Message
> From: Fred Kerr [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=AOePAouwfMKIiXA4Zgnf_01tR81bRVn7IKQfN0GOhPnDYoBDoDTRH8xFA2_ranArRyH8KThEBA]fkerr@u...[/url
> Sent: Monday, March 17, 2003 4:42 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping]
>
>
> I think a "beacon" setup may be needed, or may simplify things a lot. I'm
> planning to try this myself. Basically have a few IR LEDs in various
> locations and orientations, transmitting codes that can be distinguished
> apart.
>
> "laxboy687" <laxboy687@e...> wrote:
> > Hey all,
> > I'm working on a project to create a bot that roams my house taking
> > readings (temp, Fire sensors, etc...) and then reports them back to
> > my computer. I realize that in order to do this, my bot would have to
> > have a "map" of the house and where it could link up to my comp. Does
> > anyone have any expeirince with this type of navigation? I'm using a
> > BS2 so is this even possible?
> >
> > thanx everyone
> > -Mike
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. 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
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>
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>
>
can be very inexpensive, or could get more complicated. An IR emitter could
be mounted on a servo, or a mirror on the servo, and different codes
transmitted based on the angle. Small bots could even have beacon
transmitters.
A beacon could use a TV remote IC, 3V, low current. Various intensities might
be useful for detecting range (and perhaps to avoid reflections, or take
advantage of them too).
The tabrobotkit yahoo group has some files on the chip that their IR remotes
use. There are lots of chips for that, and also on the receiving end. I have
a couple I got from Radio Shack, and 3 different ones from Jameco.
As for visualization, consider placing a flashlight on the floor so it
projects a beam of light. A robot could follow the beam and determine the
intensity. Now consider two more flashlights projecting beams that intersect
with the other ones, to form a triangle. With signals encoded in the beams,
the robot can tell which beam of light it is following, and what direction it
is going, toward or away from each emitter.
That's the rough idea; I don't know how well it might work out.
Phil.Kruger@A... wrote:
> Can you be more specific about your beacons. Are they for ID of room or
will
> your bot use for navigation. How did you construct? Battery? Powered
outlet?
> Inexpensive to build if I wanted bunches?
> Thanks
>
>
Original Message
> From: Fred Kerr [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=AOePAouwfMKIiXA4Zgnf_01tR81bRVn7IKQfN0GOhPnDYoBDoDTRH8xFA2_ranArRyH8KThEBA]fkerr@u...[/url
> Sent: Monday, March 17, 2003 4:42 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping]
>
>
> I think a "beacon" setup may be needed, or may simplify things a lot. I'm
> planning to try this myself. Basically have a few IR LEDs in various
> locations and orientations, transmitting codes that can be distinguished
> apart.
>
> "laxboy687" <laxboy687@e...> wrote:
> > Hey all,
> > I'm working on a project to create a bot that roams my house taking
> > readings (temp, Fire sensors, etc...) and then reports them back to
> > my computer. I realize that in order to do this, my bot would have to
> > have a "map" of the house and where it could link up to my comp. Does
> > anyone have any expeirince with this type of navigation? I'm using a
> > BS2 so is this even possible?
> >
> > thanx everyone
> > -Mike
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. 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
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>
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>
>
Comments
beacon A, once at Beacon A the bot goes to Beacon B and so on. Finally
when a voltage monitor sets off, the bot looks for the recharge beacon.
Is that possible? I wanted something like my bot going through different
rooms and then back to the recharge.
Thanx again
-Mike
Original Message
From: Fred Kerr (usa.net) [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=XI0AI0vBiSJJ-Jgn6M5aaaZyc1SUwSBO4jmmu2ifn382U_r6TdpTgTUlsWC2ahDXL0s_]fkerr@u...[/url
Sent: Monday, March 17, 2003 7:32 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
Sorry, I haven't built them yet. It's just a concept at present. Each
beacon
can be very inexpensive, or could get more complicated. An IR emitter
could
be mounted on a servo, or a mirror on the servo, and different codes
transmitted based on the angle. Small bots could even have beacon
transmitters.
A beacon could use a TV remote IC, 3V, low current. Various intensities
might
be useful for detecting range (and perhaps to avoid reflections, or take
advantage of them too).
The tabrobotkit yahoo group has some files on the chip that their IR
remotes
use. There are lots of chips for that, and also on the receiving end.
I have
a couple I got from Radio Shack, and 3 different ones from Jameco.
As for visualization, consider placing a flashlight on the floor so it
projects a beam of light. A robot could follow the beam and determine
the
intensity. Now consider two more flashlights projecting beams that
intersect
with the other ones, to form a triangle. With signals encoded in the
beams,
the robot can tell which beam of light it is following, and what
direction it
is going, toward or away from each emitter.
That's the rough idea; I don't know how well it might work out.
Phil.Kruger@A... wrote:
> Can you be more specific about your beacons. Are they for ID of room
or
will
> your bot use for navigation. How did you construct? Battery? Powered
outlet?
> Inexpensive to build if I wanted bunches?
> Thanks
>
>
Original Message
> From: Fred Kerr [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=XI0AI0vBiSJJ-Jgn6M5aaaZyc1SUwSBO4jmmu2ifn382U_r6TdpTgTUlsWC2ahDXL0s_]fkerr@u...[/url
> Sent: Monday, March 17, 2003 4:42 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping]
>
>
> I think a "beacon" setup may be needed, or may simplify things a lot.
I'm
> planning to try this myself. Basically have a few IR LEDs in various
> locations and orientations, transmitting codes that can be
distinguished
> apart.
>
> "laxboy687" <laxboy687@e...> wrote:
> > Hey all,
> > I'm working on a project to create a bot that roams my house taking
> > readings (temp, Fire sensors, etc...) and then reports them back to
> > my computer. I realize that in order to do this, my bot would have
to
> > have a "map" of the house and where it could link up to my comp.
Does
> > anyone have any expeirince with this type of navigation? I'm using a
> > BS2 so is this even possible?
> >
> > thanx everyone
> > -Mike
> >
> >
> > To UNSUBSCRIBE, just send mail to:
> > basicstamps-unsubscribe@yahoogroups.com
> > from the same email address that you subscribed. 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. Text in the Subject
and
> Body of the message will be ignored.
>
>
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>
>
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and
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>
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>
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from the same email address that you subscribed. Text in the Subject
and Body of the message will be ignored.
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I think the beacons are a great idea. But you might need more than the
beacons, especially if the bot is to go room to room in a large house. Also
it seems as if some object detection will be required, in case stuff gets in
the way.
If the bot will do a specific route, perhaps you could do something similar
to the "follow the tape" thing. Instead of tape, put tiny NIB magnets along
the path, and use linear hall sensors to follow them. Maybe use the magnets
down hallways and the beacons in rooms, with a little object detection in
case the dog gets in the way. I have never done such a thing, just a
thought.
Jonathan
www.madlabs.info
Original Message
From: "Mike Dillon" <laxboy687@e...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, March 17, 2003 7:07 PM
Subject: RE: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
> Thanx Fred for the concept. Do you think I could program the bot to find
> beacon A, once at Beacon A the bot goes to Beacon B and so on. Finally
> when a voltage monitor sets off, the bot looks for the recharge beacon.
> Is that possible? I wanted something like my bot going through different
> rooms and then back to the recharge.
>
> Thanx again
> -Mike
>
Original Message
> From: Fred Kerr (usa.net) [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=FJxcXwVjDX6iI8tmAuYmLxruMWTrbZIcMz0jswwvuxeWrAMCjJe3ouqjPw_IyohUbbeIXPSLcDE]fkerr@u...[/url
> Sent: Monday, March 17, 2003 7:32 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
>
> Sorry, I haven't built them yet. It's just a concept at present. Each
> beacon
> can be very inexpensive, or could get more complicated. An IR emitter
> could
> be mounted on a servo, or a mirror on the servo, and different codes
> transmitted based on the angle. Small bots could even have beacon
> transmitters.
>
> A beacon could use a TV remote IC, 3V, low current. Various intensities
> might
> be useful for detecting range (and perhaps to avoid reflections, or take
> advantage of them too).
>
> The tabrobotkit yahoo group has some files on the chip that their IR
> remotes
> use. There are lots of chips for that, and also on the receiving end.
> I have
> a couple I got from Radio Shack, and 3 different ones from Jameco.
>
> As for visualization, consider placing a flashlight on the floor so it
> projects a beam of light. A robot could follow the beam and determine
> the
> intensity. Now consider two more flashlights projecting beams that
> intersect
> with the other ones, to form a triangle. With signals encoded in the
> beams,
> the robot can tell which beam of light it is following, and what
> direction it
> is going, toward or away from each emitter.
>
> That's the rough idea; I don't know how well it might work out.
>
> Phil.Kruger@A... wrote:
> > Can you be more specific about your beacons. Are they for ID of room
> or
> will
> > your bot use for navigation. How did you construct? Battery? Powered
> outlet?
> > Inexpensive to build if I wanted bunches?
> > Thanks
> >
> >
Original Message
> > From: Fred Kerr [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=FJxcXwVjDX6iI8tmAuYmLxruMWTrbZIcMz0jswwvuxeWrAMCjJe3ouqjPw_IyohUbbeIXPSLcDE]fkerr@u...[/url
> > Sent: Monday, March 17, 2003 4:42 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping]
> >
> >
> > I think a "beacon" setup may be needed, or may simplify things a lot.
> I'm
> > planning to try this myself. Basically have a few IR LEDs in various
> > locations and orientations, transmitting codes that can be
> distinguished
> > apart.
> >
> > "laxboy687" <laxboy687@e...> wrote:
> > > Hey all,
> > > I'm working on a project to create a bot that roams my house taking
> > > readings (temp, Fire sensors, etc...) and then reports them back to
> > > my computer. I realize that in order to do this, my bot would have
> to
> > > have a "map" of the house and where it could link up to my comp.
> Does
> > > anyone have any expeirince with this type of navigation? I'm using a
>
> > > BS2 so is this even possible?
> > >
> > > thanx everyone
> > > -Mike
> > >
> > >
> > > To UNSUBSCRIBE, just send mail to:
> > > basicstamps-unsubscribe@yahoogroups.com
> > > from the same email address that you subscribed. 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. 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. 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
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>
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>
>
>
>
> To UNSUBSCRIBE, just send mail to:
> basicstamps-unsubscribe@yahoogroups.com
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>
>
>
>
What are NIB Magnets and linear hall sensors? I have already got a
object detection system working and calibrated so I just have to get the
"route"
thing going.
Thanx
-Mike
Original Message
From: Jonathan Peakall [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=s5dXdfMX_Xjoz2zOOHyo8o6EU3FJwBs5FFGnBZyoyWu3v8nmSvCVWb_OCNjFMk19wiVkK7ojnEUMzfonEgPFUQ]jpeakall@m...[/url
Sent: Monday, March 17, 2003 11:19 PM
To: basicstamps@yahoogroups.com
Subject: Re: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
Mike, Fred,
I think the beacons are a great idea. But you might need more than the
beacons, especially if the bot is to go room to room in a large house.
Also
it seems as if some object detection will be required, in case stuff
gets in
the way.
If the bot will do a specific route, perhaps you could do something
similar
to the "follow the tape" thing. Instead of tape, put tiny NIB magnets
along
the path, and use linear hall sensors to follow them. Maybe use the
magnets
down hallways and the beacons in rooms, with a little object detection
in
case the dog gets in the way. I have never done such a thing, just a
thought.
Jonathan
www.madlabs.info
Original Message
From: "Mike Dillon" <laxboy687@e...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, March 17, 2003 7:07 PM
Subject: RE: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
> Thanx Fred for the concept. Do you think I could program the bot to
find
> beacon A, once at Beacon A the bot goes to Beacon B and so on. Finally
> when a voltage monitor sets off, the bot looks for the recharge
beacon.
> Is that possible? I wanted something like my bot going through
different
> rooms and then back to the recharge.
>
> Thanx again
> -Mike
>
Original Message
> From: Fred Kerr (usa.net) [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=AQJZqM-MljXTV5ZHiyGB6FESM59drWIwHYRsFYSLBnXbRgiNiZOiLEaXkMc7q8CZIG0mc792K7I]fkerr@u...[/url
> Sent: Monday, March 17, 2003 7:32 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
>
> Sorry, I haven't built them yet. It's just a concept at present.
Each
> beacon
> can be very inexpensive, or could get more complicated. An IR emitter
> could
> be mounted on a servo, or a mirror on the servo, and different codes
> transmitted based on the angle. Small bots could even have beacon
> transmitters.
>
> A beacon could use a TV remote IC, 3V, low current. Various
intensities
> might
> be useful for detecting range (and perhaps to avoid reflections, or
take
> advantage of them too).
>
> The tabrobotkit yahoo group has some files on the chip that their IR
> remotes
> use. There are lots of chips for that, and also on the receiving end.
> I have
> a couple I got from Radio Shack, and 3 different ones from Jameco.
>
> As for visualization, consider placing a flashlight on the floor so it
> projects a beam of light. A robot could follow the beam and determine
> the
> intensity. Now consider two more flashlights projecting beams that
> intersect
> with the other ones, to form a triangle. With signals encoded in the
> beams,
> the robot can tell which beam of light it is following, and what
> direction it
> is going, toward or away from each emitter.
>
> That's the rough idea; I don't know how well it might work out.
>
> Phil.Kruger@A... wrote:
> > Can you be more specific about your beacons. Are they for ID of room
> or
> will
> > your bot use for navigation. How did you construct? Battery? Powered
> outlet?
> > Inexpensive to build if I wanted bunches?
> > Thanks
> >
> >
Original Message
> > From: Fred Kerr [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=AQJZqM-MljXTV5ZHiyGB6FESM59drWIwHYRsFYSLBnXbRgiNiZOiLEaXkMc7q8CZIG0mc792K7I]fkerr@u...[/url
> > Sent: Monday, March 17, 2003 4:42 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping]
> >
> >
> > I think a "beacon" setup may be needed, or may simplify things a
lot.
> I'm
> > planning to try this myself. Basically have a few IR LEDs in
various
> > locations and orientations, transmitting codes that can be
> distinguished
> > apart.
> >
> > "laxboy687" <laxboy687@e...> wrote:
> > > Hey all,
> > > I'm working on a project to create a bot that roams my house
taking
> > > readings (temp, Fire sensors, etc...) and then reports them back
to
> > > my computer. I realize that in order to do this, my bot would have
> to
> > > have a "map" of the house and where it could link up to my comp.
> Does
> > > anyone have any expeirince with this type of navigation? I'm using
a
>
> > > BS2 so is this even possible?
> > >
> > > thanx everyone
> > > -Mike
> > >
> > >
> > > To UNSUBSCRIBE, just send mail to:
> > > basicstamps-unsubscribe@yahoogroups.com
> > > from the same email address that you subscribed. 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. 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. 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
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>
>
>
>
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and
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NIB stands for Neodymium Iron Boron, which is the combination of elements
used to make really strong magnets, the strongest there are, I think. Check
out: http://www.wondermagnet.com/dev/main.shtml . They sell lots of them.
They can also be scrounged free from old hard drives. Small NIBs can be
gotten surplus and on ebay.
Hall sensors detect magnetic fields. They come in at least two flavors,
linear and I guess non-linear. Linear ones vary a resistance based on the
strength of the magnetic field. The others are an on/off type, as soon as
the magnetic field is strong enough it switches.
As I said, I have never done this. I would get a Hall sensor and experiment
with a magnet and see what range you can get. Then figure out how many
magnets it would take and see if it is practical. The reason I thought it
would be cool is that the magnets would be much more easily hidden than the
tape method.
Jonathan
www.madlabs.info
Original Message
From: "Mike Dillon" <laxboy687@e...>
To: <basicstamps@yahoogroups.com>
Sent: Tuesday, March 18, 2003 3:35 PM
Subject: RE: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
> Jonathan,
> What are NIB Magnets and linear hall sensors? I have already got a
> object detection system working and calibrated so I just have to get the
> "route"
> thing going.
> Thanx
> -Mike
>
>
Original Message
> From: Jonathan Peakall [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=6ALI5EMWEUr98qrEEVvO0wM-MZJKSO5SUhlDEy44881q9sF3WlOLLbDWsRC_5khnhl-BrzsUCy815xNbqpo]jpeakall@m...[/url
> Sent: Monday, March 17, 2003 11:19 PM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
>
> Mike, Fred,
>
> I think the beacons are a great idea. But you might need more than the
> beacons, especially if the bot is to go room to room in a large house.
> Also
> it seems as if some object detection will be required, in case stuff
> gets in
> the way.
>
> If the bot will do a specific route, perhaps you could do something
> similar
> to the "follow the tape" thing. Instead of tape, put tiny NIB magnets
> along
> the path, and use linear hall sensors to follow them. Maybe use the
> magnets
> down hallways and the beacons in rooms, with a little object detection
> in
> case the dog gets in the way. I have never done such a thing, just a
> thought.
>
> Jonathan
>
> www.madlabs.info
>
>
>
>
Original Message
> From: "Mike Dillon" <laxboy687@e...>
> To: <basicstamps@yahoogroups.com>
> Sent: Monday, March 17, 2003 7:07 PM
> Subject: RE: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
>
>
> > Thanx Fred for the concept. Do you think I could program the bot to
> find
> > beacon A, once at Beacon A the bot goes to Beacon B and so on. Finally
> > when a voltage monitor sets off, the bot looks for the recharge
> beacon.
> > Is that possible? I wanted something like my bot going through
> different
> > rooms and then back to the recharge.
> >
> > Thanx again
> > -Mike
> >
Original Message
> > From: Fred Kerr (usa.net) [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=7gWmVDCy1sjMrFv8wLxqv4_c7Od6RixijW93SvaeWU6DpSZjL2q6uMSyKR5Em7i_nneu2w]fkerr@u...[/url
> > Sent: Monday, March 17, 2003 7:32 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
> >
> > Sorry, I haven't built them yet. It's just a concept at present.
> Each
> > beacon
> > can be very inexpensive, or could get more complicated. An IR emitter
> > could
> > be mounted on a servo, or a mirror on the servo, and different codes
> > transmitted based on the angle. Small bots could even have beacon
> > transmitters.
> >
> > A beacon could use a TV remote IC, 3V, low current. Various
> intensities
> > might
> > be useful for detecting range (and perhaps to avoid reflections, or
> take
> > advantage of them too).
> >
> > The tabrobotkit yahoo group has some files on the chip that their IR
> > remotes
> > use. There are lots of chips for that, and also on the receiving end.
> > I have
> > a couple I got from Radio Shack, and 3 different ones from Jameco.
> >
> > As for visualization, consider placing a flashlight on the floor so it
> > projects a beam of light. A robot could follow the beam and determine
> > the
> > intensity. Now consider two more flashlights projecting beams that
> > intersect
> > with the other ones, to form a triangle. With signals encoded in the
> > beams,
> > the robot can tell which beam of light it is following, and what
> > direction it
> > is going, toward or away from each emitter.
> >
> > That's the rough idea; I don't know how well it might work out.
> >
> > Phil.Kruger@A... wrote:
> > > Can you be more specific about your beacons. Are they for ID of room
> > or
> > will
> > > your bot use for navigation. How did you construct? Battery? Powered
> > outlet?
> > > Inexpensive to build if I wanted bunches?
> > > Thanks
> > >
> > >
Original Message
> > > From: Fred Kerr [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=7gWmVDCy1sjMrFv8wLxqv4_c7Od6RixijW93SvaeWU6DpSZjL2q6uMSyKR5Em7i_nneu2w]fkerr@u...[/url
> > > Sent: Monday, March 17, 2003 4:42 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: Re: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping]
> > >
> > >
> > > I think a "beacon" setup may be needed, or may simplify things a
> lot.
> > I'm
> > > planning to try this myself. Basically have a few IR LEDs in
> various
> > > locations and orientations, transmitting codes that can be
> > distinguished
> > > apart.
> > >
> > > "laxboy687" <laxboy687@e...> wrote:
> > > > Hey all,
> > > > I'm working on a project to create a bot that roams my house
> taking
> > > > readings (temp, Fire sensors, etc...) and then reports them back
> to
> > > > my computer. I realize that in order to do this, my bot would have
> > to
> > > > have a "map" of the house and where it could link up to my comp.
> > Does
> > > > anyone have any expeirince with this type of navigation? I'm using
> a
> >
> > > > BS2 so is this even possible?
> > > >
> > > > thanx everyone
> > > > -Mike
> > > >
> > > >
> > > > To UNSUBSCRIBE, just send mail to:
> > > > basicstamps-unsubscribe@yahoogroups.com
> > > > from the same email address that you subscribed. 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. 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. 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. 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. 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. 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. 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/
>
>
>
>
they are in the lens asembley they are about 1 cm bye
1.5 cm and are realy strong [noparse]:)[/noparse]
--- Jonathan Peakall <jpeakall@m...> wrote:
> Mike,
>
> NIB stands for Neodymium Iron Boron, which is the
> combination of elements
> used to make really strong magnets, the strongest
> there are, I think. Check
> out: http://www.wondermagnet.com/dev/main.shtml .
> They sell lots of them.
> They can also be scrounged free from old hard
> drives. Small NIBs can be
> gotten surplus and on ebay.
>
> Hall sensors detect magnetic fields. They come in at
> least two flavors,
> linear and I guess non-linear. Linear ones vary a
> resistance based on the
> strength of the magnetic field. The others are an
> on/off type, as soon as
> the magnetic field is strong enough it switches.
>
> As I said, I have never done this. I would get a
> Hall sensor and experiment
> with a magnet and see what range you can get. Then
> figure out how many
> magnets it would take and see if it is practical.
> The reason I thought it
> would be cool is that the magnets would be much more
> easily hidden than the
> tape method.
>
> Jonathan
>
> www.madlabs.info
>
>
>
>
Original Message
> From: "Mike Dillon" <laxboy687@e...>
> To: <basicstamps@yahoogroups.com>
> Sent: Tuesday, March 18, 2003 3:35 PM
> Subject: RE: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
>
>
> > Jonathan,
> > What are NIB Magnets and linear hall sensors? I
> have already got a
> > object detection system working and calibrated so
> I just have to get the
> > "route"
> > thing going.
> > Thanx
> > -Mike
> >
> >
Original Message
> > From: Jonathan Peakall
> [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=pRX_bQJT60sJqi3G-ZEG2CoRn8CVP4WkZc6qGKx1LW2V37SQKPXHDC81hNgMdTlvHRXfx1S_AQCcUMwGfNYp]jpeakall@m...[/url
> > Sent: Monday, March 17, 2003 11:19 PM
> > To: basicstamps@yahoogroups.com
> > Subject: Re: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
> >
> > Mike, Fred,
> >
> > I think the beacons are a great idea. But you
> might need more than the
> > beacons, especially if the bot is to go room to
> room in a large house.
> > Also
> > it seems as if some object detection will be
> required, in case stuff
> > gets in
> > the way.
> >
> > If the bot will do a specific route, perhaps you
> could do something
> > similar
> > to the "follow the tape" thing. Instead of tape,
> put tiny NIB magnets
> > along
> > the path, and use linear hall sensors to follow
> them. Maybe use the
> > magnets
> > down hallways and the beacons in rooms, with a
> little object detection
> > in
> > case the dog gets in the way. I have never done
> such a thing, just a
> > thought.
> >
> > Jonathan
> >
> > www.madlabs.info
> >
> >
> >
> >
Original Message
> > From: "Mike Dillon" <laxboy687@e...>
> > To: <basicstamps@yahoogroups.com>
> > Sent: Monday, March 17, 2003 7:07 PM
> > Subject: RE: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
> >
> >
> > > Thanx Fred for the concept. Do you think I could
> program the bot to
> > find
> > > beacon A, once at Beacon A the bot goes to
> Beacon B and so on. Finally
> > > when a voltage monitor sets off, the bot looks
> for the recharge
> > beacon.
> > > Is that possible? I wanted something like my bot
> going through
> > different
> > > rooms and then back to the recharge.
> > >
> > > Thanx again
> > > -Mike
> > >
Original Message
> > > From: Fred Kerr (usa.net) [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=KQqkoRGrUriWHRCYR6MjvLYO7sDKZG2F4iRl637Wvpz3w3cBSCesD7sQ30NLKVU2uO3s]fkerr@u...[/url
> > > Sent: Monday, March 17, 2003 7:32 PM
> > > To: basicstamps@yahoogroups.com
> > > Subject: Re: [noparse]/noparse]RE: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping
> > >
> > > Sorry, I haven't built them yet. It's just a
> concept at present.
> > Each
> > > beacon
> > > can be very inexpensive, or could get more
> complicated. An IR emitter
> > > could
> > > be mounted on a servo, or a mirror on the servo,
> and different codes
> > > transmitted based on the angle. Small bots
> could even have beacon
> > > transmitters.
> > >
> > > A beacon could use a TV remote IC, 3V, low
> current. Various
> > intensities
> > > might
> > > be useful for detecting range (and perhaps to
> avoid reflections, or
> > take
> > > advantage of them too).
> > >
> > > The tabrobotkit yahoo group has some files on
> the chip that their IR
> > > remotes
> > > use. There are lots of chips for that, and also
> on the receiving end.
> > > I have
> > > a couple I got from Radio Shack, and 3 different
> ones from Jameco.
> > >
> > > As for visualization, consider placing a
> flashlight on the floor so it
> > > projects a beam of light. A robot could follow
> the beam and determine
> > > the
> > > intensity. Now consider two more flashlights
> projecting beams that
> > > intersect
> > > with the other ones, to form a triangle. With
> signals encoded in the
> > > beams,
> > > the robot can tell which beam of light it is
> following, and what
> > > direction it
> > > is going, toward or away from each emitter.
> > >
> > > That's the rough idea; I don't know how well it
> might work out.
> > >
> > > Phil.Kruger@A... wrote:
> > > > Can you be more specific about your beacons.
> Are they for ID of room
> > > or
> > > will
> > > > your bot use for navigation. How did you
> construct? Battery? Powered
> > > outlet?
> > > > Inexpensive to build if I wanted bunches?
> > > > Thanks
> > > >
> > > >
Original Message
> > > > From: Fred Kerr [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=KQqkoRGrUriWHRCYR6MjvLYO7sDKZG2F4iRl637Wvpz3w3cBSCesD7sQ30NLKVU2uO3s]fkerr@u...[/url
> > > > Sent: Monday, March 17, 2003 4:42 PM
> > > > To: basicstamps@yahoogroups.com
> > > > Subject: Re: [noparse][[/noparse][noparse][[/noparse]basicstamps] Room Mapping]
> > > >
> > > >
> > > > I think a "beacon" setup may be needed, or may
> simplify things a
> > lot.
> > > I'm
> > > > planning to try this myself. Basically have a
> few IR LEDs in
> > various
> > > > locations and orientations, transmitting codes
> that can be
> > > distinguished
> > > > apart.
>
=== message truncated ===
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