Shaft encoders for wheeled robot?
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Posts: 46,084
Has anyone implemented shaft encoders for their wheeled robot?? I am trying
to locate a source for shaft encoders as well as encoder wheels, some of my
projects use modified servo motors for wheels, while others use dc motors.
What I would like to do is something like the Descartes robot. Any help
appreciated.
to locate a source for shaft encoders as well as encoder wheels, some of my
projects use modified servo motors for wheels, while others use dc motors.
What I would like to do is something like the Descartes robot. Any help
appreciated.
Comments
digi-key, don't know the part number off hand I could find out if you like.
With a few modifications I managed to fit the in a futaba s-148 servo. My
next next step will be to write some code for a pair of 12c671s to decode
them
>From: "CPWRobotics" <charley@c...>
>Reply-To: basicstamps@egroups.com
>To: "Stamp Mailing List" <basicstamps@egroups.com>
>Subject: [noparse][[/noparse]basicstamps] Shaft encoders for wheeled robot?
>Date: Mon, 20 Mar 2000 15:39:11 -0500
>
>Has anyone implemented shaft encoders for their wheeled robot?? I am trying
>to locate a source for shaft encoders as well as encoder wheels, some of my
>projects use modified servo motors for wheels, while others use dc motors.
>What I would like to do is something like the Descartes robot. Any help
>appreciated.
>
>
>
>
>
>
>-- 20 megs of disk space in your group's Document Vault
>-- http://www.egroups.com/docvault/basicstamps/?m=1
>
>
______________________________________________________
called Hamamatsu, its used on the rug warrior robot, of course I still
haven't found a source for the encoder wheels. I know there are different
ways to do this, however I would like the most reliable way, and hopefully
not spend a fortune doing it. Thanks again.
Original Message
From: "ED Ward" <punk__rocker@h...>
To: <basicstamps@egroups.com>
Sent: Monday, March 20, 2000 7:51 PM
Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> I'm working on this idea know. I got a couple cheat shaft encoders from
> digi-key, don't know the part number off hand I could find out if you
like.
> With a few modifications I managed to fit the in a futaba s-148 servo. My
> next next step will be to write some code for a pair of 12c671s to decode
> them
>
> >From: "CPWRobotics" <charley@c...>
> >Reply-To: basicstamps@egroups.com
> >To: "Stamp Mailing List" <basicstamps@egroups.com>
> >Subject: [noparse][[/noparse]basicstamps] Shaft encoders for wheeled robot?
> >Date: Mon, 20 Mar 2000 15:39:11 -0500
> >
> >Has anyone implemented shaft encoders for their wheeled robot?? I am
trying
> >to locate a source for shaft encoders as well as encoder wheels, some of
my
> >projects use modified servo motors for wheels, while others use dc
motors.
> >What I would like to do is something like the Descartes robot. Any help
> >appreciated.
> >
> >
> >
> >
> >
> >
> >-- 20 megs of disk space in your group's Document Vault
> >-- http://www.egroups.com/docvault/basicstamps/?m=1
> >
> >
>
> ______________________________________________________
>
>
> -- Easily schedule meetings and events using the group calendar!
> -- http://www.egroups.com/cal?listname=basicstamps&m=1
>
>
and print it out on white card. A photo-diode/LED combo set for close
range reflective function could pick off the code. If you need absolute position
then you could print a code wheel with the required resolution , 8 bits will
give you
slighly more than 1 degree. You'll need as many photo-diode/LED combos
as the number of bits. 8 bits would work well withe the SHIFTIN via a 74HC165 8
bits in and serial out,
this only takes up 2 pins.
Another way is to use a angular sensing Hall device and a small magnet that
rotates, you then
use an A/D to put the data into the STAMP
I don't know what you are going to use the encoded output for so
otherwise I might have some other ideas.
From: "CPWRobotics" <charley@c...>
To: <basicstamps@egroups.com>
Date sent: Mon, 20 Mar 2000 22:59:15 -0500
Send reply to: basicstamps@egroups.com
Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> I would definitely appreciate it. I also found a very small photoreflectors,
> called Hamamatsu, its used on the rug warrior robot, of course I still
> haven't found a source for the encoder wheels. I know there are different
> ways to do this, however I would like the most reliable way, and hopefully
> not spend a fortune doing it. Thanks again.
>
>
>
Original Message
> From: "ED Ward" <punk__rocker@h...>
> To: <basicstamps@egroups.com>
> Sent: Monday, March 20, 2000 7:51 PM
> Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
>
>
> > I'm working on this idea know. I got a couple cheat shaft encoders from
> > digi-key, don't know the part number off hand I could find out if you
> like.
> > With a few modifications I managed to fit the in a futaba s-148 servo. My
> > next next step will be to write some code for a pair of 12c671s to decode
> > them
> >
> > >From: "CPWRobotics" <charley@c...>
> > >Reply-To: basicstamps@egroups.com
> > >To: "Stamp Mailing List" <basicstamps@egroups.com>
> > >Subject: [noparse][[/noparse]basicstamps] Shaft encoders for wheeled robot?
> > >Date: Mon, 20 Mar 2000 15:39:11 -0500
> > >
> > >Has anyone implemented shaft encoders for their wheeled robot?? I am
> trying
> > >to locate a source for shaft encoders as well as encoder wheels, some of
> my
> > >projects use modified servo motors for wheels, while others use dc
> motors.
> > >What I would like to do is something like the Descartes robot. Any help
> > >appreciated.
> > >
> > >
> > >
> > >
> > >
> > >
> > >-- 20 megs of disk space in your group's Document Vault
> > >-- http://www.egroups.com/docvault/basicstamps/?m=1
> > >
> > >
> >
> > ______________________________________________________
> >
> >
> > -- Easily schedule meetings and events using the group calendar!
> > -- http://www.egroups.com/cal?listname=basicstamps&m=1
> >
> >
>
>
>
>
> eGroups.com home: http://www.egroups.com/group/basicstamps
> http://www.egroups.com - Simplifying group communications
>
>
>
>
ron... the motor man...
Ronald Doctors
http://www.members.home.net/rdoctors
robot.
Original Message
From: "Ronald Doctors" <rdoctors@h...>
To: <basicstamps@egroups.com>
Sent: Monday, March 20, 2000 11:21 PM
Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> If you need a simple encoder wheel you can draw one on the PC
> and print it out on white card. A photo-diode/LED combo set for close
> range reflective function could pick off the code. If you need absolute
position
> then you could print a code wheel with the required resolution , 8 bits
will give you
> slighly more than 1 degree. You'll need as many photo-diode/LED combos
> as the number of bits. 8 bits would work well withe the SHIFTIN via a
74HC165 8 bits in and serial out,
> this only takes up 2 pins.
> Another way is to use a angular sensing Hall device and a small magnet
that rotates, you then
> use an A/D to put the data into the STAMP
> I don't know what you are going to use the encoded output for so
> otherwise I might have some other ideas.
>
> From: "CPWRobotics" <charley@c...>
> To: <basicstamps@egroups.com>
> Date sent: Mon, 20 Mar 2000 22:59:15 -0500
> Send reply to: basicstamps@egroups.com
> Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
>
> > I would definitely appreciate it. I also found a very small
photoreflectors,
> > called Hamamatsu, its used on the rug warrior robot, of course I still
> > haven't found a source for the encoder wheels. I know there are
different
> > ways to do this, however I would like the most reliable way, and
hopefully
> > not spend a fortune doing it. Thanks again.
> >
> >
> >
Original Message
> > From: "ED Ward" <punk__rocker@h...>
> > To: <basicstamps@egroups.com>
> > Sent: Monday, March 20, 2000 7:51 PM
> > Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> >
> >
> > > I'm working on this idea know. I got a couple cheat shaft encoders
from
> > > digi-key, don't know the part number off hand I could find out if you
> > like.
> > > With a few modifications I managed to fit the in a futaba s-148 servo.
My
> > > next next step will be to write some code for a pair of 12c671s to
decode
> > > them
> > >
> > > >From: "CPWRobotics" <charley@c...>
> > > >Reply-To: basicstamps@egroups.com
> > > >To: "Stamp Mailing List" <basicstamps@egroups.com>
> > > >Subject: [noparse][[/noparse]basicstamps] Shaft encoders for wheeled robot?
> > > >Date: Mon, 20 Mar 2000 15:39:11 -0500
> > > >
> > > >Has anyone implemented shaft encoders for their wheeled robot?? I am
> > trying
> > > >to locate a source for shaft encoders as well as encoder wheels, some
of
> > my
> > > >projects use modified servo motors for wheels, while others use dc
> > motors.
> > > >What I would like to do is something like the Descartes robot. Any
help
> > > >appreciated.
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
>
> > > >-- 20 megs of disk space in your group's Document Vault
> > > >-- http://www.egroups.com/docvault/basicstamps/?m=1
> > > >
> > > >
> > >
> > > ______________________________________________________
> > >
> >
>
> > > -- Easily schedule meetings and events using the group calendar!
> > > -- http://www.egroups.com/cal?listname=basicstamps&m=1
> > >
> > >
> >
> >
> >
> >
> > eGroups.com home: http://www.egroups.com/group/basicstamps
> > http://www.egroups.com - Simplifying group communications
> >
> >
> >
> >
>
>
> ron... the motor man...
> Ronald Doctors
> http://www.members.home.net/rdoctors
>
>
> -- Check out your group's private Chat room
> -- http://www.egroups.com/ChatPage?listName=basicstamps&m=1
>
>
-William
Original Message
From: CPWRobotics <charley@c...>
To: <basicstamps@egroups.com>
Sent: Monday, March 20, 2000 10:59 PM
Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> I would definitely appreciate it. I also found a very small
photoreflectors,
> called Hamamatsu, its used on the rug warrior robot, of course I still
> haven't found a source for the encoder wheels. I know there are different
> ways to do this, however I would like the most reliable way, and hopefully
> not spend a fortune doing it. Thanks again.
>
>
>
Original Message
> From: "ED Ward" <punk__rocker@h...>
> To: <basicstamps@egroups.com>
> Sent: Monday, March 20, 2000 7:51 PM
> Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
>
>
> > I'm working on this idea know. I got a couple cheat shaft encoders from
> > digi-key, don't know the part number off hand I could find out if you
> like.
> > With a few modifications I managed to fit the in a futaba s-148 servo.
My
> > next next step will be to write some code for a pair of 12c671s to
decode
> > them
> >
> > >From: "CPWRobotics" <charley@c...>
> > >Reply-To: basicstamps@egroups.com
> > >To: "Stamp Mailing List" <basicstamps@egroups.com>
> > >Subject: [noparse][[/noparse]basicstamps] Shaft encoders for wheeled robot?
> > >Date: Mon, 20 Mar 2000 15:39:11 -0500
> > >
> > >Has anyone implemented shaft encoders for their wheeled robot?? I am
> trying
> > >to locate a source for shaft encoders as well as encoder wheels, some
of
> my
> > >projects use modified servo motors for wheels, while others use dc
> motors.
> > >What I would like to do is something like the Descartes robot. Any help
> > >appreciated.
> > >
> > >
> > >
> > >
> > >
> >
>
> > >-- 20 megs of disk space in your group's Document Vault
> > >-- http://www.egroups.com/docvault/basicstamps/?m=1
> > >
> > >
> >
> > ______________________________________________________
> >
> >
> > -- Easily schedule meetings and events using the group calendar!
> > -- http://www.egroups.com/cal?listname=basicstamps&m=1
> >
> >
>
>
>
>
> eGroups.com home: http://www.egroups.com/group/basicstamps
> http://www.egroups.com - Simplifying group communications
>
>
>
>
those photoreflectors. I haven't been able to find a source for them yet.
Original Message
From: "William Cox" <william@c...>
To: <basicstamps@egroups.com>
Sent: Tuesday, March 21, 2000 9:40 AM
Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> Where did you find the Hamamatsu photoreflectors??
> -William
>
>
Original Message
> From: CPWRobotics <charley@c...>
> To: <basicstamps@egroups.com>
> Sent: Monday, March 20, 2000 10:59 PM
> Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
>
>
> > I would definitely appreciate it. I also found a very small
> photoreflectors,
> > called Hamamatsu, its used on the rug warrior robot, of course I still
> > haven't found a source for the encoder wheels. I know there are
different
> > ways to do this, however I would like the most reliable way, and
hopefully
> > not spend a fortune doing it. Thanks again.
> >
> >
> >
Original Message
> > From: "ED Ward" <punk__rocker@h...>
> > To: <basicstamps@egroups.com>
> > Sent: Monday, March 20, 2000 7:51 PM
> > Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> >
> >
> > > I'm working on this idea know. I got a couple cheat shaft encoders
from
> > > digi-key, don't know the part number off hand I could find out if you
> > like.
> > > With a few modifications I managed to fit the in a futaba s-148 servo.
> My
> > > next next step will be to write some code for a pair of 12c671s to
> decode
> > > them
> > >
> > > >From: "CPWRobotics" <charley@c...>
> > > >Reply-To: basicstamps@egroups.com
> > > >To: "Stamp Mailing List" <basicstamps@egroups.com>
> > > >Subject: [noparse][[/noparse]basicstamps] Shaft encoders for wheeled robot?
> > > >Date: Mon, 20 Mar 2000 15:39:11 -0500
> > > >
> > > >Has anyone implemented shaft encoders for their wheeled robot?? I am
> > trying
> > > >to locate a source for shaft encoders as well as encoder wheels, some
> of
> > my
> > > >projects use modified servo motors for wheels, while others use dc
> > motors.
> > > >What I would like to do is something like the Descartes robot. Any
help
> > > >appreciated.
> > > >
> > > >
> > > >
> > > >
> > > >
> > >
> >
> > > >-- 20 megs of disk space in your group's Document Vault
> > > >-- http://www.egroups.com/docvault/basicstamps/?m=1
> > > >
> > > >
> > >
> > > ______________________________________________________
> > >
> >
>
> > > -- Easily schedule meetings and events using the group calendar!
> > > -- http://www.egroups.com/cal?listname=basicstamps&m=1
> > >
> > >
> >
> >
> >
> >
> > eGroups.com home: http://www.egroups.com/group/basicstamps
> > http://www.egroups.com - Simplifying group communications
> >
> >
> >
> >
>
>
>
> -- Check out your group's private Chat room
> -- http://www.egroups.com/ChatPage?listName=basicstamps&m=1
>
>
Joker Robotics, a dealer of the Rug Warrior in Germany
http://www.joker-robotics.com/
used to sell them separately. However, I did not find it in their new
catalog. It may be worth to ask them anyway.
Those Rug Warrior decoders do not seem to be very reliable. I presume that
light from other sources may interfere.
Werner
Am/Um 11:57 21.03.2000 -0500 schrieben Sie:
>Actually I had purchased a Rug Warrior Pro robot a while back, and it uses
>those photoreflectors. I haven't been able to find a source for them yet.
>
>
>
Original Message
>From: "William Cox" <william@c...>
>To: <basicstamps@egroups.com>
>Sent: Tuesday, March 21, 2000 9:40 AM
>Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
>
>
>> Where did you find the Hamamatsu photoreflectors??
>> -William
>>
3315C-1-006-ND
They're on page 448 in the most recent Canadian edition. Not sure if it
will be the same in the American version. Check it out, they cost me $3.91
Canadian.
>From: Werner Lehnberg <wl@G...>
>Reply-To: basicstamps@egroups.com
>To: basicstamps@egroups.com
>Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
>Date: Wed, 22 Mar 2000 08:53:37 +0100
>
>Hallo,
>
>Joker Robotics, a dealer of the Rug Warrior in Germany
>http://www.joker-robotics.com/
>used to sell them separately. However, I did not find it in their new
>catalog. It may be worth to ask them anyway.
>Those Rug Warrior decoders do not seem to be very reliable. I presume that
>light from other sources may interfere.
>
>Werner
>
>Am/Um 11:57 21.03.2000 -0500 schrieben Sie:
> >Actually I had purchased a Rug Warrior Pro robot a while back, and it
>uses
> >those photoreflectors. I haven't been able to find a source for them yet.
> >
> >
> >
Original Message
> >From: "William Cox" <william@c...>
> >To: <basicstamps@egroups.com>
> >Sent: Tuesday, March 21, 2000 9:40 AM
> >Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> >
> >
> >> Where did you find the Hamamatsu photoreflectors??
> >> -William
> >>
>
>
>-- Check out your group's private Chat room
>-- http://www.egroups.com/ChatPage?listName=basicstamps&m=1
>
>
______________________________________________________
Original Message
From: "ED Ward" <punk__rocker@h...>
To: <basicstamps@egroups.com>
Sent: Wednesday, March 22, 2000 8:29 PM
Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> forgive my lazyness. Here is the digikey part number of my shaft
encoders:
>
> 3315C-1-006-ND
>
> They're on page 448 in the most recent Canadian edition. Not sure if it
> will be the same in the American version. Check it out, they cost me
$3.91
> Canadian.
>
>
> >From: Werner Lehnberg <wl@G...>
> >Reply-To: basicstamps@egroups.com
> >To: basicstamps@egroups.com
> >Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> >Date: Wed, 22 Mar 2000 08:53:37 +0100
> >
> >Hallo,
> >
> >Joker Robotics, a dealer of the Rug Warrior in Germany
> >http://www.joker-robotics.com/
> >used to sell them separately. However, I did not find it in their new
> >catalog. It may be worth to ask them anyway.
> >Those Rug Warrior decoders do not seem to be very reliable. I presume
that
> >light from other sources may interfere.
> >
> >Werner
> >
> >Am/Um 11:57 21.03.2000 -0500 schrieben Sie:
> > >Actually I had purchased a Rug Warrior Pro robot a while back, and it
> >uses
> > >those photoreflectors. I haven't been able to find a source for them
yet.
> > >
> > >
> > >
Original Message
> > >From: "William Cox" <william@c...>
> > >To: <basicstamps@egroups.com>
> > >Sent: Tuesday, March 21, 2000 9:40 AM
> > >Subject: [noparse][[/noparse]basicstamps] Re: Shaft encoders for wheeled robot?
> > >
> > >
> > >> Where did you find the Hamamatsu photoreflectors??
> > >> -William
> > >>
> >
> >
> >-- Check out your group's private Chat room
> >-- http://www.egroups.com/ChatPage?listName=basicstamps&m=1
> >
> >
>
> ______________________________________________________
>
>
> -- Easily schedule meetings and events using the group calendar!
> -- http://www.egroups.com/cal?listname=basicstamps&m=1
>
>