bs2 stepper motor control - motor quivers
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Posts: 46,084
i'm using a bs2 and uln2803 to control a stepper motor. i wired the
circuit as the schematic for the motor said
( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran the
sample code. the motor quivers and will not turn. the write-up said
this is caused by incorrect sequencing, which i did exactly as the
sample code. i have tried other sequences but nothing has working.
if anyone has any advice on what i could be doing wrong or if there
is possibly another problem, i would greatly appreciate it.
adam
circuit as the schematic for the motor said
( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran the
sample code. the motor quivers and will not turn. the write-up said
this is caused by incorrect sequencing, which i did exactly as the
sample code. i have tried other sequences but nothing has working.
if anyone has any advice on what i could be doing wrong or if there
is possibly another problem, i would greatly appreciate it.
adam
Comments
> i'm using a bs2 and uln2803 to control a stepper motor. i wired
the
> circuit as the schematic for the motor said
> ( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran
the
> sample code. the motor quivers and will not turn. the write-up
said
> this is caused by incorrect sequencing, which i did exactly as the
> sample code. i have tried other sequences but nothing has
working.
> if anyone has any advice on what i could be doing wrong or if there
> is possibly another problem, i would greatly appreciate it.
>
> adam
The 2803 can sink about 500mA. What current is the motor ?
How are you driving the darlington ?
Assuming you have a .5A motor and are running it at the nameplate
voltage, verify the motor leads are correct. ( double that if you
are using two channles to get 1 amp.)
Assuming (again) that you have a 6 wire motor, you have already found
the 3 wires for Phase A by checking the resistance, and then you
conneced your positive to the center tap (lowest resistance) wire ?)
You have connected the power thru a properly sized resistor. 5volts
time 500mA is 2.5 watts, so you used a 2.5 watt resistor or whatever
your calculations would show ?
So, you should have power supply to resistor, to motor coil center
tap on Phase A.
power supply to resistor to coil on phase B
Phase A line 1 and phase A line 2 to the 2803 then to ground.
Ditto phase B.
If you motor prattles but does not spin, double check the resistor
sizing and double check the lead is actually the lowest ohm lead.
The other two will be higher to each other, and the center tap will
be lower to either of those two.
If that all checks out, swap only the 2 wires on Phase A to the
darlington.
That should make things work out.
If the motor spins backwards, then swap all 4 wires to the darlington.
Dave
two manufacturers)? We will be posting an update today that gives the
color sequences for the motors we've provided. Since it's not there
now, I'll give it here:
Motor Mitsumi Howard
Phase 1 Black Brown
Phase 2 Orange Green
Phase 3 Brown Red
Phase 4 Yellow White
Common Red Black
I wrote the documentation that appears on our site now (the version with
the phase sequence graphics) and I have tested with both motors. The
Mitsumi motor is a shaped like a flat gray cylinder, and the Howard
motor is shaped more like a black cube.
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: oabatmsu [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=MTAroFFOpJStdCcSzfkcWkLeqnLyRS9oyzucJnP8Ou79XwDg9fU1Li_Q1GI0hFotQCKCtJep1SD6FQ]nankeead@m...[/url
Sent: Monday, March 22, 2004 9:51 PM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] bs2 stepper motor control - motor quivers
i'm using a bs2 and uln2803 to control a stepper motor. i wired the
circuit as the schematic for the motor said
( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran the
sample code. the motor quivers and will not turn. the write-up said
this is caused by incorrect sequencing, which i did exactly as the
sample code. i have tried other sequences but nothing has working.
if anyone has any advice on what i could be doing wrong or if there
is possibly another problem, i would greatly appreciate it.
adam
Adam
--- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
wrote:
> Did you buy the Stepper from Parallax? If yes, which one (we have
had
> two manufacturers)? We will be posting an update today that gives
the
> color sequences for the motors we've provided. Since it's not there
> now, I'll give it here:
>
> Motor Mitsumi Howard
>
> Phase 1 Black Brown
> Phase 2 Orange Green
> Phase 3 Brown Red
> Phase 4 Yellow White
> Common Red Black
>
> I wrote the documentation that appears on our site now (the version
with
> the phase sequence graphics) and I have tested with both motors.
The
> Mitsumi motor is a shaped like a flat gray cylinder, and the Howard
> motor is shaped more like a black cube.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> Sent: Monday, March 22, 2004 9:51 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] bs2 stepper motor control - motor quivers
>
>
> i'm using a bs2 and uln2803 to control a stepper motor. i wired
the
> circuit as the schematic for the motor said
> ( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran
the
> sample code. the motor quivers and will not turn. the write-up
said
> this is caused by incorrect sequencing, which i did exactly as the
> sample code. i have tried other sequences but nothing has
working.
> if anyone has any advice on what i could be doing wrong or if there
> is possibly another problem, i would greatly appreciate it.
>
> adam
reconnected both motors based on the code chart below and they work
fine. Are you using the latest code sample? The demo code did change a
bit with the document update and that may be causing your problem. You
can get the latest code from our product page for the BS1, the BS2
family, and even for the Javelin Stamp.
http://www.parallax.com/detail.asp?product_id=27964
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: oabatmsu [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=AjEfkXjYCbmzNAQWlA-xLW7r3t28hSUGTpcE8vmgVKCw2-EkdjNYZfrHV4zXPCrzADrXwmf6_1TWxqI]nankeead@m...[/url
Sent: Tuesday, March 23, 2004 8:23 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: bs2 stepper motor control - motor quivers
I'm using the Mitsumi motor and that is the information i went by.
Adam
--- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
wrote:
> Did you buy the Stepper from Parallax? If yes, which one (we have
had
> two manufacturers)? We will be posting an update today that gives
the
> color sequences for the motors we've provided. Since it's not there
> now, I'll give it here:
>
> Motor Mitsumi Howard
>
> Phase 1 Black Brown
> Phase 2 Orange Green
> Phase 3 Brown Red
> Phase 4 Yellow White
> Common Red Black
>
> I wrote the documentation that appears on our site now (the version
with
> the phase sequence graphics) and I have tested with both motors.
The
> Mitsumi motor is a shaped like a flat gray cylinder, and the Howard
> motor is shaped more like a black cube.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> Sent: Monday, March 22, 2004 9:51 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] bs2 stepper motor control - motor quivers
>
>
> i'm using a bs2 and uln2803 to control a stepper motor. i wired
the
> circuit as the schematic for the motor said
> ( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran
the
> sample code. the motor quivers and will not turn. the write-up
said
> this is caused by incorrect sequencing, which i did exactly as the
> sample code. i have tried other sequences but nothing has
working.
> if anyone has any advice on what i could be doing wrong or if there
> is possibly another problem, i would greatly appreciate it.
>
> adam
and the Stepper ground connected?
--- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
wrote:
> With respect, Adam, you're doing something wrong because I just
> reconnected both motors based on the code chart below and they work
> fine. Are you using the latest code sample? The demo code did
change a
> bit with the document update and that may be causing your problem.
You
> can get the latest code from our product page for the BS1, the BS2
> family, and even for the Javelin Stamp.
>
> http://www.parallax.com/detail.asp?product_id=27964
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> Sent: Tuesday, March 23, 2004 8:23 AM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Re: bs2 stepper motor control - motor quivers
>
>
> I'm using the Mitsumi motor and that is the information i went by.
>
> Adam
>
> --- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
> wrote:
> > Did you buy the Stepper from Parallax? If yes, which one (we have
> had
> > two manufacturers)? We will be posting an update today that gives
> the
> > color sequences for the motors we've provided. Since it's not
there
> > now, I'll give it here:
> >
> > Motor Mitsumi Howard
> >
> > Phase 1 Black Brown
> > Phase 2 Orange Green
> > Phase 3 Brown Red
> > Phase 4 Yellow White
> > Common Red Black
> >
> > I wrote the documentation that appears on our site now (the
version
> with
> > the phase sequence graphics) and I have tested with both motors.
> The
> > Mitsumi motor is a shaped like a flat gray cylinder, and the
Howard
> > motor is shaped more like a black cube.
> >
> > -- Jon Williams
> > -- Applications Engineer, Parallax
> > -- Dallas Office
> >
> >
> >
Original Message
> > From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> > Sent: Monday, March 22, 2004 9:51 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] bs2 stepper motor control - motor quivers
> >
> >
> > i'm using a bs2 and uln2803 to control a stepper motor. i wired
> the
> > circuit as the schematic for the motor said
> > ( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran
> the
> > sample code. the motor quivers and will not turn. the write-up
> said
> > this is caused by incorrect sequencing, which i did exactly as the
> > sample code. i have tried other sequences but nothing has
> working.
> > if anyone has any advice on what i could be doing wrong or if
there
> > is possibly another problem, i would greatly appreciate it.
> >
> > adam
ULN2x03 need to be connected. The ULN2x03 actually switches each phase
connection to ground to complete the path (common is connected to +12v).
-- Jon Williams
-- Applications Engineer, Parallax
-- Dallas Office
Original Message
From: Allan Lane [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=OpYKyMGFcLfr3vUkz42k7BHIEweSDlNukoGQAFwZEYgmjZ-tdzpBJaR12UHB2ytF_TD7L97Y2p8jpvXeDYs939JwhoY]allan.lane@h...[/url
Sent: Tuesday, March 23, 2004 11:57 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: bs2 stepper motor control - motor quivers
It may not be obvious, but is the Stamp ground
and the Stepper ground connected?
--- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
wrote:
> With respect, Adam, you're doing something wrong because I just
> reconnected both motors based on the code chart below and they work
> fine. Are you using the latest code sample? The demo code did
change a
> bit with the document update and that may be causing your problem.
You
> can get the latest code from our product page for the BS1, the BS2
> family, and even for the Javelin Stamp.
>
> http://www.parallax.com/detail.asp?product_id=27964
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> Sent: Tuesday, March 23, 2004 8:23 AM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Re: bs2 stepper motor control - motor quivers
>
>
> I'm using the Mitsumi motor and that is the information i went by.
>
> Adam
>
> --- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
> wrote:
> > Did you buy the Stepper from Parallax? If yes, which one (we have
> had
> > two manufacturers)? We will be posting an update today that gives
> the
> > color sequences for the motors we've provided. Since it's not
there
> > now, I'll give it here:
> >
> > Motor Mitsumi Howard
> >
> > Phase 1 Black Brown
> > Phase 2 Orange Green
> > Phase 3 Brown Red
> > Phase 4 Yellow White
> > Common Red Black
> >
> > I wrote the documentation that appears on our site now (the
version
> with
> > the phase sequence graphics) and I have tested with both motors.
> The
> > Mitsumi motor is a shaped like a flat gray cylinder, and the
Howard
> > motor is shaped more like a black cube.
> >
> > -- Jon Williams
> > -- Applications Engineer, Parallax
> > -- Dallas Office
> >
> >
> >
Original Message
> > From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> > Sent: Monday, March 22, 2004 9:51 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] bs2 stepper motor control - motor quivers
> >
> >
> > i'm using a bs2 and uln2803 to control a stepper motor. i wired
> the
> > circuit as the schematic for the motor said
> > ( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran
> the
> > sample code. the motor quivers and will not turn. the write-up
> said
> > this is caused by incorrect sequencing, which i did exactly as the
> > sample code. i have tried other sequences but nothing has
> working.
> > if anyone has any advice on what i could be doing wrong or if
there
> > is possibly another problem, i would greatly appreciate it.
> >
> > adam
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abuse@p....
> this is caused by incorrect sequencing
You'll get a similar response from trying to run the motor too fast. Try
adjusting the delay to something really slow like 1 step every second.
Stick a piece of paper on the shaft with a pencil mark so that you can
easilly see what the motor is doing.
Steve.
==========================================
Steve Baldwin Electronic Product Design
TLA Microsystems Ltd Microcontroller Specialists
PO Box 15-680, New Lynn http://www.tla.co.nz
Auckland, New Zealand ph +64 9 820-2221
email: steve@t... fax +64 9 820-1929
=========================================
Your circuit may be OK.
The fault most everyone makes is they try to run a stepper motor too
fast or at speed right away. Either way the motor will quiver like you
state.
What you have to do is build up the speed slowly. Start at a few RPM,
and then ramp up the speed up to 200 RPM. Steppers only run up to about
200 rpm or so for top speed. Modify the program to step the motor real
slow, and then work on speeding it up more gradually, up to 200 rpm.
Depending on the stepper you may get 100 rpm or over 200 rpm for top
speed.
Advanced systems can get speeds upwards of 2,000 RPM or so, but they do
so at the cost of torque. Plus they use creative methods of pulsing or
pulse skipping to getup to that speed.
Anyway, I hope that helps you.
Regards,
Earl
Original Message
From: oabatmsu [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=T0EEkRm-KeQDAVqp3SbYwQNSYEVh7wyL3dk7YjB1vJdk4KETJP2Sw5NNLuhtWAB7iSMTjQ0fXwFB]nankeead@m...[/url
Sent: Tuesday, March 23, 2004 8:23 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: bs2 stepper motor control - motor quivers
I'm using the Mitsumi motor and that is the information i went by.
Adam
--- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
wrote:
> Did you buy the Stepper from Parallax? If yes, which one (we have
had
> two manufacturers)? We will be posting an update today that gives
the
> color sequences for the motors we've provided. Since it's not there
> now, I'll give it here:
>
> Motor Mitsumi Howard
>
> Phase 1 Black Brown
> Phase 2 Orange Green
> Phase 3 Brown Red
> Phase 4 Yellow White
> Common Red Black
>
> I wrote the documentation that appears on our site now (the version
with
> the phase sequence graphics) and I have tested with both motors.
The
> Mitsumi motor is a shaped like a flat gray cylinder, and the Howard
> motor is shaped more like a black cube.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> Sent: Monday, March 22, 2004 9:51 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] bs2 stepper motor control - motor quivers
>
>
> i'm using a bs2 and uln2803 to control a stepper motor. i wired
the
> circuit as the schematic for the motor said
> ( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran
the
> sample code. the motor quivers and will not turn. the write-up
said
> this is caused by incorrect sequencing, which i did exactly as the
> sample code. i have tried other sequences but nothing has
working.
> if anyone has any advice on what i could be doing wrong or if there
> is possibly another problem, i would greatly appreciate it.
>
> adam
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
-- Jon Williams
-- Parallax
Original Message
From: Earl Bollinger [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=bMT2G6OZMO193d6LJ0KbjY9uiSTEaChNQHwLq7Tp7_wdIxFyydh2SR-M2zS4bmJwFx5XFKqeUVMu9J8iu4bgr6wzG0g]earlwbollinger@c...[/url
Sent: Tuesday, March 23, 2004 7:03 PM
To: basicstamps@yahoogroups.com
Subject: RE: [noparse][[/noparse]basicstamps] Re: bs2 stepper motor control - motor quivers
Well in thinking about it.
Your circuit may be OK.
The fault most everyone makes is they try to run a stepper motor too
fast or at speed right away. Either way the motor will quiver like you
state. What you have to do is build up the speed slowly. Start at a few
RPM, and then ramp up the speed up to 200 RPM. Steppers only run up to
about 200 rpm or so for top speed. Modify the program to step the motor
real slow, and then work on speeding it up more gradually, up to 200
rpm. Depending on the stepper you may get 100 rpm or over 200 rpm for
top speed. Advanced systems can get speeds upwards of 2,000 RPM or so,
but they do so at the cost of torque. Plus they use creative methods of
pulsing or pulse skipping to getup to that speed. Anyway, I hope that
helps you. Regards, Earl
Original Message
From: oabatmsu [noparse]/noparse]mailto:[url=http://forums.parallaxinc.com/group/basicstamps/post?postID=AXTKrxSflKEDq4UBqS962iWuf1pVov9rUWyj-ZnM0gl4WJsaBPTTAWYRUFEEkNjpraPeBpxtjQ]nankeead@m...[/url
Sent: Tuesday, March 23, 2004 8:23 AM
To: basicstamps@yahoogroups.com
Subject: [noparse][[/noparse]basicstamps] Re: bs2 stepper motor control - motor quivers
I'm using the Mitsumi motor and that is the information i went by.
Adam
--- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
wrote:
> Did you buy the Stepper from Parallax? If yes, which one (we have
had
> two manufacturers)? We will be posting an update today that gives
the
> color sequences for the motors we've provided. Since it's not there
> now, I'll give it here:
>
> Motor Mitsumi Howard
>
> Phase 1 Black Brown
> Phase 2 Orange Green
> Phase 3 Brown Red
> Phase 4 Yellow White
> Common Red Black
>
> I wrote the documentation that appears on our site now (the version
with
> the phase sequence graphics) and I have tested with both motors.
The
> Mitsumi motor is a shaped like a flat gray cylinder, and the Howard
> motor is shaped more like a black cube.
>
> -- Jon Williams
> -- Applications Engineer, Parallax
> -- Dallas Office
>
>
>
Original Message
> From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> Sent: Monday, March 22, 2004 9:51 PM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] bs2 stepper motor control - motor quivers
>
>
> i'm using a bs2 and uln2803 to control a stepper motor. i wired
the
> circuit as the schematic for the motor said
> ( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran
the
> sample code. the motor quivers and will not turn. the write-up
said
> this is caused by incorrect sequencing, which i did exactly as the
> sample code. i have tried other sequences but nothing has
working.
> if anyone has any advice on what i could be doing wrong or if there
> is possibly another problem, i would greatly appreciate it.
>
> adam
To UNSUBSCRIBE, just send mail to:
basicstamps-unsubscribe@yahoogroups.com
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and Body of the message will be ignored.
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This message has been scanned by WebShield. Please report SPAM to
abuse@p....
<earlwbollinger@c...> wrote:
> Well in thinking about it.
> Your circuit may be OK.
> The fault most everyone makes is they try to run a stepper motor too
> fast or at speed right away. Either way the motor will quiver like
you
> state.
> What you have to do is build up the speed slowly. Start at a few
RPM,
> and then ramp up the speed up to 200 RPM. Steppers only run up to
about
> 200 rpm or so for top speed. Modify the program to step the motor
real
> slow, and then work on speeding it up more gradually, up to 200 rpm.
> Depending on the stepper you may get 100 rpm or over 200 rpm for top
> speed.
> Advanced systems can get speeds upwards of 2,000 RPM or so, but
they do
> so at the cost of torque. Plus they use creative methods of pulsing
or
> pulse skipping to getup to that speed.
> Anyway, I hope that helps you.
> Regards,
> Earl
Good possibility.
Start the motor out at something like 100 hz and ramp up. I think
you may be better talking hertz on the motor as there are 400 steps
per rotation on some motors and 48 on others.
Also, you are dead on that motor torque drops as the inverse of speed
for constant power. At some point, there will not be enough power
to spin itself.
Dave
your help everyone.
--- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
wrote:
> Good catch, Earl!
>
> -- Jon Williams
> -- Parallax
>
>
>
Original Message
> From: Earl Bollinger [noparse][[/noparse]mailto:earlwbollinger@c...]
> Sent: Tuesday, March 23, 2004 7:03 PM
> To: basicstamps@yahoogroups.com
> Subject: RE: [noparse][[/noparse]basicstamps] Re: bs2 stepper motor control - motor
quivers
>
>
> Well in thinking about it.
> Your circuit may be OK.
> The fault most everyone makes is they try to run a stepper motor too
> fast or at speed right away. Either way the motor will quiver like
you
> state. What you have to do is build up the speed slowly. Start at a
few
> RPM, and then ramp up the speed up to 200 RPM. Steppers only run up
to
> about 200 rpm or so for top speed. Modify the program to step the
motor
> real slow, and then work on speeding it up more gradually, up to 200
> rpm. Depending on the stepper you may get 100 rpm or over 200 rpm
for
> top speed. Advanced systems can get speeds upwards of 2,000 RPM or
so,
> but they do so at the cost of torque. Plus they use creative
methods of
> pulsing or pulse skipping to getup to that speed. Anyway, I hope
that
> helps you. Regards, Earl
>
>
Original Message
> From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> Sent: Tuesday, March 23, 2004 8:23 AM
> To: basicstamps@yahoogroups.com
> Subject: [noparse][[/noparse]basicstamps] Re: bs2 stepper motor control - motor quivers
>
> I'm using the Mitsumi motor and that is the information i went by.
>
> Adam
>
> --- In basicstamps@yahoogroups.com, "Jon Williams" <jwilliams@p...>
> wrote:
> > Did you buy the Stepper from Parallax? If yes, which one (we have
> had
> > two manufacturers)? We will be posting an update today that gives
> the
> > color sequences for the motors we've provided. Since it's not
there
> > now, I'll give it here:
> >
> > Motor Mitsumi Howard
> >
> > Phase 1 Black Brown
> > Phase 2 Orange Green
> > Phase 3 Brown Red
> > Phase 4 Yellow White
> > Common Red Black
> >
> > I wrote the documentation that appears on our site now (the
version
> with
> > the phase sequence graphics) and I have tested with both motors.
> The
> > Mitsumi motor is a shaped like a flat gray cylinder, and the
Howard
> > motor is shaped more like a black cube.
> >
> > -- Jon Williams
> > -- Applications Engineer, Parallax
> > -- Dallas Office
> >
> >
> >
Original Message
> > From: oabatmsu [noparse][[/noparse]mailto:nankeead@m...]
> > Sent: Monday, March 22, 2004 9:51 PM
> > To: basicstamps@yahoogroups.com
> > Subject: [noparse][[/noparse]basicstamps] bs2 stepper motor control - motor quivers
> >
> >
> > i'm using a bs2 and uln2803 to control a stepper motor. i wired
> the
> > circuit as the schematic for the motor said
> > ( http://www.parallax.com/dl/docs/prod/motors/27964.pdf ) and ran
> the
> > sample code. the motor quivers and will not turn. the write-up
> said
> > this is caused by incorrect sequencing, which i did exactly as the
> > sample code. i have tried other sequences but nothing has
> working.
> > if anyone has any advice on what i could be doing wrong or if
there
> > is possibly another problem, i would greatly appreciate it.
> >
> > adam
>
>
>
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