DC Motor Direction Control
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Posts: 46,084
I'm building an indoor flying blimp for a class (actually, I'm hacking the
Tri-Turbofan
indoor flying blimp). I want to bypass the remote control and use other sensors
to control
the blimp's fan units. The fans are DC motors that spin both clockwise and
counterclockwise.
Can anyone direct me to a simple solution to build my own circuit that will
allow me to
control the polarity to the motor. I'm a newbie so simplicity is key. My
understanding is
that a relay may be the best bet, or perhaps an h-bridge. I just don't know how
to set
these up. I don't know any specifics about the motors that spin the fans other
than they
are small and light weight, about 3/4 of an inch long and about the diameter of
a AA
battery. The whole fan unit (which houses the RC receiver) runs on a 3V battery
(the one
that looks like a short AA battery).
Any advice? Thanks in advance.
~Haven
Tri-Turbofan
indoor flying blimp). I want to bypass the remote control and use other sensors
to control
the blimp's fan units. The fans are DC motors that spin both clockwise and
counterclockwise.
Can anyone direct me to a simple solution to build my own circuit that will
allow me to
control the polarity to the motor. I'm a newbie so simplicity is key. My
understanding is
that a relay may be the best bet, or perhaps an h-bridge. I just don't know how
to set
these up. I don't know any specifics about the motors that spin the fans other
than they
are small and light weight, about 3/4 of an inch long and about the diameter of
a AA
battery. The whole fan unit (which houses the RC receiver) runs on a 3V battery
(the one
that looks like a short AA battery).
Any advice? Thanks in advance.
~Haven
Comments
A simple h bridge would be the best if you just want to switch
motor directions there is a good write up. In nuts and volts in article
23 located at
http://www.parallax.com/html_pages/downloads/nvcolumns/Nuts_Volts_Downlo
ad_V1.asp
If you need to vary the speed then you might want to try the
Micro Dual Serial Motor Controller at
http://www.parallax.com/detail.asp?product_id=30052
Stephen Swanson
Technical Support Manager
Parallax, Inc.
599 Menlo Drive, #100
Rocklin, CA 95765
Phone (916) 624-8333
E-mail ..... sswanson@p...
Main site...... www.parallax.com
Educational site.... www.parallax.com/sic
Javelin Stamp... www.parallax.com/javelin
Original Message
From: Haven [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=ssmk6EDOtU6inP_ntgN7sD-CC86yFI5oq11aZwYwkwHgGXJCvSSlV1WrcH2IDQafCEYj4ax0UvYf_tyaOtU]birdahonk@y...[/url
Sent: Friday, April 16, 2004 4:46 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] DC Motor Direction Control
I'm building an indoor flying blimp for a class (actually, I'm hacking
the Tri-Turbofan
indoor flying blimp). I want to bypass the remote control and use other
sensors to control
the blimp's fan units. The fans are DC motors that spin both clockwise
and
counterclockwise.
Can anyone direct me to a simple solution to build my own circuit that
will allow me to
control the polarity to the motor. I'm a newbie so simplicity is key. My
understanding is
that a relay may be the best bet, or perhaps an h-bridge. I just don't
know how to set
these up. I don't know any specifics about the motors that spin the fans
other than they
are small and light weight, about 3/4 of an inch long and about the
diameter of a AA
battery. The whole fan unit (which houses the RC receiver) runs on a 3V
battery (the one
that looks like a short AA battery).
Any advice? Thanks in advance.
~Haven
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project but, just haven't justified it yet. Hopefully, I can justify
it soon.
Currently, I am just using a SPST and a SPDT relay. On/off and
forward/reverse respectively. Bought them at Radio Shack. I have a
schematic. E-mail me at FrankSmith512@y... if you want it. Let
me know if you have CAD software.
Best wishes,
Frank
--- In basicstamps@yahoogroups.com, "Stephen Swanson" <sswanson@p...>
wrote:
> Hello,
> A simple h bridge would be the best if you just want to switch
> motor directions there is a good write up. In nuts and volts in
article
> 23 located at
>
http://www.parallax.com/html_pages/downloads/nvcolumns/Nuts_Volts_Down
lo
> ad_V1.asp
>
> If you need to vary the speed then you might want to try the
> Micro Dual Serial Motor Controller at
> http://www.parallax.com/detail.asp?product_id=30052
>
> Stephen Swanson
> Technical Support Manager
> Parallax, Inc.
> 599 Menlo Drive, #100
> Rocklin, CA 95765
>
> Phone (916) 624-8333
> E-mail ..... sswanson@p...
> Main site...... www.parallax.com
> Educational site.... www.parallax.com/sic
> Javelin Stamp... www.parallax.com/javelin
>
>
>
Original Message
> From: Haven [noparse][[/noparse]mailto:birdahonk@y...]
> Sent: Friday, April 16, 2004 4:46 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] DC Motor Direction Control
>
> I'm building an indoor flying blimp for a class (actually, I'm
hacking
> the Tri-Turbofan
> indoor flying blimp). I want to bypass the remote control and use
other
> sensors to control
> the blimp's fan units. The fans are DC motors that spin both
clockwise
> and
> counterclockwise.
>
> Can anyone direct me to a simple solution to build my own circuit
that
> will allow me to
> control the polarity to the motor. I'm a newbie so simplicity is
key. My
> understanding is
> that a relay may be the best bet, or perhaps an h-bridge. I just
don't
> know how to set
> these up. I don't know any specifics about the motors that spin the
fans
> other than they
> are small and light weight, about 3/4 of an inch long and about the
> diameter of a AA
> battery. The whole fan unit (which houses the RC receiver) runs on
a 3V
> battery (the one
> that looks like a short AA battery).
>
> Any advice? Thanks in advance.
>
> ~Haven
>
>
>
>
> 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.
>
> Yahoo! Groups Links
>
>
>
>
>
>
>
> This message has been scanned by WebShield. Please report SPAM to
> abuse@p...
> Tri-Turbofan indoor flying blimp). I want to bypass the remote control and
> use other sensors to control the blimp's fan units. The fans are DC motors
> that spin both clockwise and counterclockwise.
>
> Can anyone direct me to a simple solution to build my own circuit that will
> allow me to control the polarity to the motor. I'm a newbie so simplicity is
> key. My understanding is that a relay may be the best bet, or perhaps an
> h-bridge. I just don't know how to set these up. I don't know any specifics
> about the motors that spin the fans other than they are small and light
> weight, about 3/4 of an inch long and about the diameter of a AA battery.
> The whole fan unit (which houses the RC receiver) runs on a 3V battery (the
> one that looks like a short AA battery).
Your #1 concern will most likely be weight. Because of this I'd choose one
of the smaller H-Bridges since it should weight less than most DPDT relays.
There's a good tutorial at: <http://www.dprg.org/tutorials/1998-04a/>
--
Enjoy,
George Warner,
Schizophrenic Optimization Scientists
Apple Developer Technical Support (DTS)
To keep the weight down and because it sounds like the
motors don't pull too much current when they are
running, I would use the L293D. This 16-pin DIP chip
is two H-bridges on a chip with diode protection and
is very reasonably priced. I can't recall where I
bought mine but they were less than $5 a piece. And
best of all, they are very easy to hook up and the
Basic Stamp programming is very straightforward.
Hope this helps and good luck with the project. Take
lots of pictures and share what you have done with the
rest of us.
Take care and have a great day!!
James E. Merritt
> > I'm building an indoor flying blimp for a class
> (actually, I'm hacking the
> > Tri-Turbofan indoor flying blimp). I want to
> bypass the remote control and
> > use other sensors to control the blimp's fan
> units. The fans are DC motors
> > that spin both clockwise and counterclockwise.
> >
> > Can anyone direct me to a simple solution to build
> my own circuit that will
> > allow me to control the polarity to the motor. I'm
> a newbie so simplicity is
> > key. My understanding is that a relay may be the
> best bet, or perhaps an
> > h-bridge. I just don't know how to set these up. I
> don't know any specifics
> > about the motors that spin the fans other than
> they are small and light
> > weight, about 3/4 of an inch long and about the
> diameter of a AA battery.
> > The whole fan unit (which houses the RC receiver)
> runs on a 3V battery (the
> > one that looks like a short AA battery).
>
__________________________________
Do you Yahoo!?
Yahoo! Photos: High-quality 4x6 digital prints for 25¢
http://photos.yahoo.com/ph/print_splash
Would you please post a schematic of how you hooked up the L293D?
On another board they kept insisting that I should use an H-bridge
but no one ever got around to posting a schematic.
I searched the net and found lots of variations which just made it
more confusing. I am controlling 3.5 amps. It is DC.
Thanks,
Frank
--- In basicstamps@yahoogroups.com, James Merritt <jamesem_99@y...>
wrote:
> Hi,
>
> To keep the weight down and because it sounds like the
> motors don't pull too much current when they are
> running, I would use the L293D. This 16-pin DIP chip
> is two H-bridges on a chip with diode protection and
> is very reasonably priced. I can't recall where I
> bought mine but they were less than $5 a piece. And
> best of all, they are very easy to hook up and the
> Basic Stamp programming is very straightforward.
>
> Hope this helps and good luck with the project. Take
> lots of pictures and share what you have done with the
> rest of us.
>
> Take care and have a great day!!
>
> James E. Merritt
>
>
> > > I'm building an indoor flying blimp for a class
> > (actually, I'm hacking the
> > > Tri-Turbofan indoor flying blimp). I want to
> > bypass the remote control and
> > > use other sensors to control the blimp's fan
> > units. The fans are DC motors
> > > that spin both clockwise and counterclockwise.
> > >
> > > Can anyone direct me to a simple solution to build
> > my own circuit that will
> > > allow me to control the polarity to the motor. I'm
> > a newbie so simplicity is
> > > key. My understanding is that a relay may be the
> > best bet, or perhaps an
> > > h-bridge. I just don't know how to set these up. I
> > don't know any specifics
> > > about the motors that spin the fans other than
> > they are small and light
> > > weight, about 3/4 of an inch long and about the
> > diameter of a AA battery.
> > > The whole fan unit (which houses the RC receiver)
> > runs on a 3V battery (the
> > > one that looks like a short AA battery).
> >
>
>
>
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Photos: High-quality 4x6 digital prints for 25¢
http://photos.yahoo.com/ph/print_splash
Here are a couple of links for the L293D that will be
very helpful. One thing, though, is that the L293D
can only handle 600 ma with a big heat sink. You said
that you are controlling 3.5 amps so in this case the
L293D won't work. There is, I believe, a larger
version of this chip, the L298 which can handle up to
4 amps with appropriate heat sinking. With that in
mind, here are the links:
www.me.metu.edu.tr/me407/documents/basic_stamp_II.ppt
www.me.umn.edu/courses/me2011/robot/technotes/L293/L293.html
This link os to Digi-Key for teh L298:
rocky.digikey.com/WebLib/ST%20Micro/Web%20Data/L298.pdf
homepage.ntlworld.com/seanellis/avrrobot_hw.htm
These should get you started.
Have a great day!!
James E. Merritt
--- franksmith512 <franksmith512@y...> wrote:
> James or someone else,
>
> Would you please post a schematic of how you hooked
> up the L293D?
>
> On another board they kept insisting that I should
> use an H-bridge
> but no one ever got around to posting a schematic.
>
> I searched the net and found lots of variations
> which just made it
> more confusing. I am controlling 3.5 amps. It is
> DC.
>
> Thanks,
> Frank
>
>
>
__________________________________
Do you Yahoo!?
Yahoo! Photos: High-quality 4x6 digital prints for 25¢
http://photos.yahoo.com/ph/print_splash
Frank
--- In basicstamps@yahoogroups.com, James Merritt <jamesem_99@y...>
wrote:
> Hi Frank,
>
> Here are a couple of links for the L293D that will be
> very helpful. One thing, though, is that the L293D
> can only handle 600 ma with a big heat sink. You said
> that you are controlling 3.5 amps so in this case the
> L293D won't work. There is, I believe, a larger
> version of this chip, the L298 which can handle up to
> 4 amps with appropriate heat sinking. With that in
> mind, here are the links:
>
> www.me.metu.edu.tr/me407/documents/basic_stamp_II.ppt
> www.me.umn.edu/courses/me2011/robot/technotes/L293/L293.html
> This link os to Digi-Key for teh L298:
> rocky.digikey.com/WebLib/ST%20Micro/Web%20Data/L298.pdf
> homepage.ntlworld.com/seanellis/avrrobot_hw.htm
>
> These should get you started.
>
> Have a great day!!
>
> James E. Merritt
>
>
> --- franksmith512 <franksmith512@y...> wrote:
> > James or someone else,
> >
> > Would you please post a schematic of how you hooked
> > up the L293D?
> >
> > On another board they kept insisting that I should
> > use an H-bridge
> > but no one ever got around to posting a schematic.
> >
> > I searched the net and found lots of variations
> > which just made it
> > more confusing. I am controlling 3.5 amps. It is
> > DC.
> >
> > Thanks,
> > Frank
> >
> >
> >
>
>
>
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Photos: High-quality 4x6 digital prints for 25¢
> http://photos.yahoo.com/ph/print_splash
a stamp.
jim
http://www.geocities.com/jimforkin2003/
Original Message
From: Haven [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=m37uijkZbapx4VQ854OVRYRql3sdzuZSu9NC3X565qdmmkpk69ABNsiTHCB3R1Pp6usJg1_jgq9tj-3MjU8]birdahonk@y...[/url
Sent: Friday, April 16, 2004 7:46 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] DC Motor Direction Control
I'm building an indoor flying blimp for a class (actually, I'm hacking the
Tri-Turbofan
indoor flying blimp). I want to bypass the remote control and use other
sensors to control
the blimp's fan units. The fans are DC motors that spin both clockwise and
counterclockwise.
Can anyone direct me to a simple solution to build my own circuit that will
allow me to
control the polarity to the motor. I'm a newbie so simplicity is key. My
understanding is
that a relay may be the best bet, or perhaps an h-bridge. I just don't know
how to set
these up. I don't know any specifics about the motors that spin the fans
other than they
are small and light weight, about 3/4 of an inch long and about the diameter
of a AA
battery. The whole fan unit (which houses the RC receiver) runs on a 3V
battery (the one
that looks like a short AA battery).
Any advice? Thanks in advance.
~Haven
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
from the same email address that you subscribed. Text in the Subject and
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http://www.geocities.com/jimforkin2003/
jim
Original Message
From: franksmith512 [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=uohYMz0kbpZJ-n4UsHSGOM8R7ZQIlqPH1-Ny3qu2146e55oVOx-gIx8ASf6WEqWgJy4AUD_zyt_BWJHCwVWj_g]franksmith512@y...[/url
Sent: Saturday, April 17, 2004 10:27 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: DC Motor Direction Control
James or someone else,
Would you please post a schematic of how you hooked up the L293D?
On another board they kept insisting that I should use an H-bridge
but no one ever got around to posting a schematic.
I searched the net and found lots of variations which just made it
more confusing. I am controlling 3.5 amps. It is DC.
Thanks,
Frank
--- In basicstamps@yahoogroups.com, James Merritt <jamesem_99@y...>
wrote:
> Hi,
>
> To keep the weight down and because it sounds like the
> motors don't pull too much current when they are
> running, I would use the L293D. This 16-pin DIP chip
> is two H-bridges on a chip with diode protection and
> is very reasonably priced. I can't recall where I
> bought mine but they were less than $5 a piece. And
> best of all, they are very easy to hook up and the
> Basic Stamp programming is very straightforward.
>
> Hope this helps and good luck with the project. Take
> lots of pictures and share what you have done with the
> rest of us.
>
> Take care and have a great day!!
>
> James E. Merritt
>
>
> > > I'm building an indoor flying blimp for a class
> > (actually, I'm hacking the
> > > Tri-Turbofan indoor flying blimp). I want to
> > bypass the remote control and
> > > use other sensors to control the blimp's fan
> > units. The fans are DC motors
> > > that spin both clockwise and counterclockwise.
> > >
> > > Can anyone direct me to a simple solution to build
> > my own circuit that will
> > > allow me to control the polarity to the motor. I'm
> > a newbie so simplicity is
> > > key. My understanding is that a relay may be the
> > best bet, or perhaps an
> > > h-bridge. I just don't know how to set these up. I
> > don't know any specifics
> > > about the motors that spin the fans other than
> > they are small and light
> > > weight, about 3/4 of an inch long and about the
> > diameter of a AA battery.
> > > The whole fan unit (which houses the RC receiver)
> > runs on a 3V battery (the
> > > one that looks like a short AA battery).
> >
>
>
>
>
>
> __________________________________
> Do you Yahoo!?
> Yahoo! Photos: High-quality 4x6 digital prints for 25¢
http://photos.yahoo.com/ph/print_splash
To UNSUBSCRIBE, just send mail to:
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