Help for newbie in robotics
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Posts: 46,084
Hi Folks,
I've been an occiasional contributor in this newsgroup, and now its my turn
to ask some newbie questions!!
I want to build a little robot to keep my 5y old and my 7 cats amused.
I've got a workshop etc so I can build a base and screw motors in etc,
but I would appreciate some pointers on where I can get motor and gear sets
etc, and H-driver boards that are compatible with stamps.
Any help would be appreciated!
Thanks,
Tony Wells
I've been an occiasional contributor in this newsgroup, and now its my turn
to ask some newbie questions!!
I want to build a little robot to keep my 5y old and my 7 cats amused.
I've got a workshop etc so I can build a base and screw motors in etc,
but I would appreciate some pointers on where I can get motor and gear sets
etc, and H-driver boards that are compatible with stamps.
Any help would be appreciated!
Thanks,
Tony Wells
Comments
Well, newbies unite! I am a newbie robot builder myself. A few months ago I
started to turn RC cars into autonomous robots using a basic stamp. If you
want to drive a DC motor there are a few steps you should take before you
can choose a H-bridge. First of all, you should get an idea of the max.
current throug the coils of the motor. The max. current is the current when
you stall the motor (hold axis fixed, connect power and measure the
current). Depending on that current value, you should choose your motor.
There are some nifty H-bridge IC's on the market that allow you to interface
some low power motors. I have experience with the L293 (upto 1Amp) and the
LM298 (upto 2Amp). If your motor is using much more current, you would
probably have to build your H-bridge yourself. It is not that difficult, but
takes more time. I used TIP120 transistors in a prototype.
here is a link to get you started:
http://www.acroname.com/robotics/info/articles/drivers/drivers.html
good luck,
Matthijs
Original Message
From: tony.wells@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=-XMANr1O7ipxhrroCZzNLAIOFeDe4Xsei8KmMRWdj1ADnVR35i3lfHOOaDV8cn8jjB7Kbic-NkGYaosVZrYmTA]tony.wells@a...[/url
Sent: Friday, February 15, 2002 16:52
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Help for newbie in robotics
Hi Folks,
I've been an occiasional contributor in this newsgroup, and now its my turn
to ask some newbie questions!!
I want to build a little robot to keep my 5y old and my 7 cats amused.
I've got a workshop etc so I can build a base and screw motors in etc,
but I would appreciate some pointers on where I can get motor and gear sets
etc, and H-driver boards that are compatible with stamps.
Any help would be appreciated!
Thanks,
Tony Wells
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I hadn't thought about using an RC car - of course all the motor bits are in
place, plus servos for steering etc.
Thanks for the tip.
Anyone else with ideas?
T
Original Message
From: "Boerlage, M.L.G." <M.L.G.Boerlage@s...>
To: <basicstamps@yahoogroups.com>
Sent: Saturday, February 16, 2002 10:13 AM
Subject: RE: [noparse][[/noparse]basicstamps] Help for newbie in robotics
> Hi there!
>
> Well, newbies unite! I am a newbie robot builder myself. A few months ago
I
> started to turn RC cars into autonomous robots using a basic stamp. If you
> want to drive a DC motor there are a few steps you should take before you
> can choose a H-bridge. First of all, you should get an idea of the max.
> current throug the coils of the motor. The max. current is the current
when
> you stall the motor (hold axis fixed, connect power and measure the
> current). Depending on that current value, you should choose your motor.
> There are some nifty H-bridge IC's on the market that allow you to
interface
> some low power motors. I have experience with the L293 (upto 1Amp) and the
> LM298 (upto 2Amp). If your motor is using much more current, you would
> probably have to build your H-bridge yourself. It is not that difficult,
but
> takes more time. I used TIP120 transistors in a prototype.
>
> here is a link to get you started:
> http://www.acroname.com/robotics/info/articles/drivers/drivers.html
>
> good luck,
>
> Matthijs
>
>
Original Message
> From: tony.wells@a... [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=1z2C5W3_ahkRylhrBFbmHIbmYEH9opIgcl7RXzSMMrKrN8FJP2cN6tZGZYR_c-ziHqE4f16x_b2YB395uQ]tony.wells@a...[/url
> Sent: Friday, February 15, 2002 16:52
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Help for newbie in robotics
>
>
> Hi Folks,
>
> I've been an occiasional contributor in this newsgroup, and now its my
turn
> to ask some newbie questions!!
>
> I want to build a little robot to keep my 5y old and my 7 cats amused.
>
> I've got a workshop etc so I can build a base and screw motors in etc,
> but I would appreciate some pointers on where I can get motor and gear
sets
> etc, and H-driver boards that are compatible with stamps.
>
> Any help would be appreciated!
>
> Thanks,
>
> Tony Wells
>
>
> 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/
>
>
>
RC servo motors make wonderful drive motors for autonomous robots. A
trivial hack converts them to free rotation, and they are then very
easily controlled using PWM from the Stamp (or any other MCU). Plus
they are relatively inexpensive at less than 10 $US each (shop
around!). Check out the robotics section of the Parallax website.
You don't need to buy any of their kits to get the info- but it is
easier that way...for those of us who are less mechanically inclined...
Good luck, and have fun-
peter
Original Message
From: <tony.wells@a...>
Date: Saturday, February 16, 2002 6:49 am
Subject: Re: [noparse][[/noparse]basicstamps] Help for newbie in robotics
> Hi Matthijs
>
> I hadn't thought about using an RC car - of course all the motor
> bits are in
> place, plus servos for steering etc.
>
> Thanks for the tip.
>
> Anyone else with ideas?
>
> T
>
You are the 2nd person to mention RC control - it looks like the way to go..
Thanks,
Tony
Original Message
From: "Peter Charles" <pcharles@m...>
To: <basicstamps@yahoogroups.com>
Sent: Monday, February 18, 2002 9:05 PM
Subject: Re: [noparse][[/noparse]basicstamps] Help for newbie in robotics
> Tony-
>
> RC servo motors make wonderful drive motors for autonomous robots. A
> trivial hack converts them to free rotation, and they are then very
> easily controlled using PWM from the Stamp (or any other MCU). Plus
> they are relatively inexpensive at less than 10 $US each (shop
> around!). Check out the robotics section of the Parallax website.
> You don't need to buy any of their kits to get the info- but it is
> easier that way...for those of us who are less mechanically inclined...
>
> Good luck, and have fun-
>
> peter
>
>
Original Message
> From: <tony.wells@a...>
> Date: Saturday, February 16, 2002 6:49 am
> Subject: Re: [noparse][[/noparse]basicstamps] Help for newbie in robotics
>
> > Hi Matthijs
> >
> > I hadn't thought about using an RC car - of course all the motor
> > bits are in
> > place, plus servos for steering etc.
> >
> > Thanks for the tip.
> >
> > Anyone else with ideas?
> >
> > T
> >
>
>
> 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/
>
>
>
pcharles@m... writes:
> RC servo motors make wonderful drive motors for autonomous robots. A
> trivial hack converts them to free rotation, and they are then very
> easily controlled using PWM from the Stamp (or any other MCU). Plus
> they are relatively inexpensive at less than 10 $US each (shop
> around!). Check out the robotics section of the Parallax website.
> You don't need to buy any of their kits to get the info- but it is
>
Just for clarification, use the PULSOUT command for driving servos with the
BASIC Stamp (The Stamp PWM command is intended for D2A). Servos do, indeed,
make great little motors as our BOE-Bot so aptly demonstrates.
For detailed information on servo programming, check out our Robotics text.
It is available for download from www.stampsinclass.com.
-- Jon Williams
-- Parallax
[noparse][[/noparse]Non-text portions of this message have been removed]