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H-Bridge (was Digest Number 467) — Parallax Forums

H-Bridge (was Digest Number 467)

ArchiverArchiver Posts: 46,084
edited 2001-02-08 17:50 in General Discussion
Probably the best write up on a H-bridge I know of is at www.bobblick.com --
I can't get his site up right now, or I'd give you the exact link.

Parallax sells the MotorMind B which is an easy way to get all this working
with very little fuss.

Can't tell from your note, but an H-Bridge is only necessary when you want
to reverse the direction of the motor. If you just want to drive a motor in
one direction and use a higher/different voltage than the Stamp, just use a
power MOSFET or an L239 or similar switching device.

On a list-related note, I am personally very bad about not clipping original
messages when I reply to the list. I tend to just leave the whole thing as
it was, which I know some people find objectionable. However, if you get the
digest version, you might want to consider cutting the reply text since it
has all the messages you are replying to. Changing the subject line is good
too.

Good luck!

Al Williams
AWC
* Floating point math for the Stamp, PIC, SX, or any microcontroller:
http://www.al-williams.com/awce/pak1.htm


>
Original Message
> From: scott stewart [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=xKbmfoWcHffrfPxsr5BqaLvEsV7Faunld8uYV-LUpelityX-ktgb8EGXmPATJZ7n48LqGEXZE4uWjhPqvA0]hercules_62215@y...[/url
> Sent: Thursday, February 08, 2001 11:05 AM
> To: basicstamps@yahoogroups.com
> Subject: Re: [noparse][[/noparse]basicstamps] Digest Number 467
>
>
> ARRRRRGHGGGGG!
> can anyone point me to a site or tell me how to get my
> stamp to turn on an H-Bridge. I want to run some hobby
> motors with separate power separate batterys and want
> my stamp battery to be isolated so that i can monitor
> it...........bear in mind that i'm a 'mechanical'
> engineer. Thanks much in advance.... :]
>

Comments

  • ArchiverArchiver Posts: 46,084
    edited 2001-02-08 17:49
    --- In basicstamps@y..., "Al Williams" <alw@a...> wrote:
    > Probably the best write up on a H-bridge I know of is at
    www.bobblick.com --
    > I can't get his site up right now, or I'd give you the exact link.
    >
    > Parallax sells the MotorMind B which is an easy way to get all this
    working
    > with very little fuss.
    >
    > Can't tell from your note, but an H-Bridge is only necessary when
    you want
    > to reverse the direction of the motor. If you just want to drive a
    motor in
    > one direction and use a higher/different voltage than the Stamp,
    just use a
    > power MOSFET or an L239 or similar switching device.
    >
    > On a list-related note, I am personally very bad about not clipping
    original
    > messages when I reply to the list. I tend to just leave the whole
    thing as
    > it was, which I know some people find objectionable. However, if
    you get the
    > digest version, you might want to consider cutting the reply text
    since it
    > has all the messages you are replying to. Changing the subject line
    is good
    > too.
    >
    > Good luck!
    >
    > Al Williams
    > AWC
    > * Floating point math for the Stamp, PIC, SX, or any
    microcontroller:
    > http://www.al-williams.com/awce/pak1.htm
    >
    >
    > >
    Original Message
    > > From: scott stewart [noparse][[/noparse]mailto:hercules_62215@y...]
    > > Sent: Thursday, February 08, 2001 11:05 AM
    > > To: basicstamps@y...
    > > Subject: Re: [noparse][[/noparse]basicstamps] Digest Number 467
    > >
    > >
    > > ARRRRRGHGGGGG!
    > > can anyone point me to a site or tell me how to get my
    > > stamp to turn on an H-Bridge. I want to run some hobby
    > > motors with separate power separate batterys and want
    > > my stamp battery to be isolated so that i can monitor
    > > it...........bear in mind that i'm a 'mechanical'
    > > engineer. Thanks much in advance.... :]
    > >
  • ArchiverArchiver Posts: 46,084
    edited 2001-02-08 17:50
    --- In basicstamps@y..., "Al Williams" <alw@a...> wrote:
    > Probably the best write up on a H-bridge I know of is at
    www.bobblick.com --
    > I can't get his site up right now, or I'd give you the exact link.
    >
    > Parallax sells the MotorMind B which is an easy way to get all this
    working
    > with very little fuss.
    >
    > Can't tell from your note, but an H-Bridge is only necessary when
    you want
    > to reverse the direction of the motor. If you just want to drive a
    motor in
    > one direction and use a higher/different voltage than the Stamp,
    just use a
    > power MOSFET or an L239 or similar switching device.
    >
    > On a list-related note, I am personally very bad about not clipping
    original
    > messages when I reply to the list. I tend to just leave the whole
    thing as
    > it was, which I know some people find objectionable. However, if
    you get the
    > digest version, you might want to consider cutting the reply text
    since it
    > has all the messages you are replying to. Changing the subject line
    is good
    > too.
    >
    > Good luck!
    >
    > Al Williams
    > AWC
    > * Floating point math for the Stamp, PIC, SX, or any
    microcontroller:
    > http://www.al-williams.com/awce/pak1.htm
    >
    >
    > >
    Original Message
    > > From: scott stewart [noparse][[/noparse]mailto:hercules_62215@y...]
    > > Sent: Thursday, February 08, 2001 11:05 AM
    > > To: basicstamps@y...
    > > Subject: Re: [noparse][[/noparse]basicstamps] Digest Number 467
    > >
    > >
    > > ARRRRRGHGGGGG!
    > > can anyone point me to a site or tell me how to get my
    > > stamp to turn on an H-Bridge. I want to run some hobby
    > > motors with separate power separate batterys and want
    > > my stamp battery to be isolated so that i can monitor
    > > it...........bear in mind that i'm a 'mechanical'
    > > engineer. Thanks much in advance.... :]
    > >
  • ArchiverArchiver Posts: 46,084
    edited 2001-02-08 17:50
    --- In basicstamps@y..., "Al Williams" <alw@a...> wrote:
    > Probably the best write up on a H-bridge I know of is at
    www.bobblick.com --
    > I can't get his site up right now, or I'd give you the exact link.
    >
    > Parallax sells the MotorMind B which is an easy way to get all this
    working
    > with very little fuss.
    >
    > Can't tell from your note, but an H-Bridge is only necessary when
    you want
    > to reverse the direction of the motor. If you just want to drive a
    motor in
    > one direction and use a higher/different voltage than the Stamp,
    just use a
    > power MOSFET or an L239 or similar switching device.
    >
    > On a list-related note, I am personally very bad about not clipping
    original
    > messages when I reply to the list. I tend to just leave the whole
    thing as
    > it was, which I know some people find objectionable. However, if
    you get the
    > digest version, you might want to consider cutting the reply text
    since it
    > has all the messages you are replying to. Changing the subject line
    is good
    > too.
    >
    > Good luck!
    >
    > Al Williams
    > AWC
    > * Floating point math for the Stamp, PIC, SX, or any
    microcontroller:
    > http://www.al-williams.com/awce/pak1.htm
    >
    >
    > >
    Original Message
    > > From: scott stewart [noparse][[/noparse]mailto:hercules_62215@y...]
    > > Sent: Thursday, February 08, 2001 11:05 AM
    > > To: basicstamps@y...
    > > Subject: Re: [noparse][[/noparse]basicstamps] Digest Number 467
    > >
    > >
    > > ARRRRRGHGGGGG!
    > > can anyone point me to a site or tell me how to get my
    > > stamp to turn on an H-Bridge. I want to run some hobby
    > > motors with separate power separate batterys and want
    > > my stamp battery to be isolated so that i can monitor
    > > it...........bear in mind that i'm a 'mechanical'
    > > engineer. Thanks much in advance.... :]
    > >
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