[Swansea Hackspace] Arduino Uno interface to a 3D printer stepper motor.
Tim Moore
timmoore47 at gmail.com
Sat May 9 14:09:14 BST 2015
What sort of current can a A4988 carry ?
Many thanks for responding.
(Can it support the Stepper Motor I'm using?)
: )
Tim_1
On 9 May 2015 at 10:32, Justin Mitchell <justin at discordia.org.uk> wrote:
> This does seem the hard way to do things when something like an A4988
> stepstick is a similar price and way simpler to use.
>
> Did you need some specifically higher current or other requirement?
>
> On 9 May 2015 7:09 am, Tim Moore <timmoore47 at gmail.com> wrote:
> >
> > Magic blue smoke was released ! : ((( So I've ordered another from
> China.
> >
> > I'll double check everything, as H configuration can short +12V to
> ground so easily ! Software can do that ! ?
> >
> > On another matter the L298N has two little cans marked '220 35V UT',
> I've pnly recently come across them. What are they ?
> >
> > Is there any favoured software to drive them that is known to work
> Arduino friendly?
> >
> > Many many thanks for responding !
> >
> > : )))
> >
> > Tim_1
> >
> > On 8 May 2015 at 22:03, Ceri Clatworthy <ceri.clatworthy at gmail.com>
> wrote:
> >>
> >> Fetch in in Monday an we will get it going
> >>
> >> Unless the magic blue smoke has been released
> >> Ceri
> >>
> >> On 8 May 2015 17:59, "Tim Moore" <timmoore47 at gmail.com> wrote:
> >>>
> >>> Well made sort of progress:-
> >>>
> >>> Got a 3D stepper type 17H16-2994S in the hope it would be powerful
> enough to drive the thing I want to rotate.
> >>>
> >>> Based on an Arduino Uno with a L298N stepper controller,
> >>>
> >>> I found this software which I adapted for just one motor.
> >>>
> >>> quote
> >>>
> >>> // connect motor controller pins to Arduino digital pins
> >>> // motor one
> >>> int enA = 10;
> >>> int in1 = 9;
> >>> int in2 = 8;
> >>> // motor two
> >>> // int enB = 5;
> >>> // int in3 = 7;
> >>> // int in4 = 6;
> >>> void setup()
> >>> {
> >>> // set all the motor control pins to outputs
> >>> pinMode(enA, OUTPUT);
> >>> // pinMode(enB, OUTPUT);
> >>> pinMode(in1, OUTPUT);
> >>> pinMode(in2, OUTPUT);
> >>> // pinMode(in3, OUTPUT);
> >>> // pinMode(in4, OUTPUT);
> >>> }
> >>> void demoOne()
> >>> {
> >>> // this function will run the motors in both directions at a fixed
> speed
> >>> // turn on motor A
> >>> digitalWrite(in1, HIGH);
> >>> digitalWrite(in2, LOW);
> >>> // set speed to 200 out of possible range 0~255
> >>> analogWrite(enA, 200);
> >>> // turn on motor B
> >>> // digitalWrite(in3, HIGH);
> >>> // digitalWrite(in4, LOW);
> >>> // set speed to 200 out of possible range 0~255
> >>> // analogWrite(enB, 200);
> >>> delay(2000);
> >>> // now change motor directions
> >>> digitalWrite(in1, LOW);
> >>> digitalWrite(in2, HIGH);
> >>> // digitalWrite(in3, LOW);
> >>> // digitalWrite(in4, HIGH);
> >>> //delay(2000);
> >>> // now turn off motors
> >>> digitalWrite(in1, LOW);
> >>> digitalWrite(in2, LOW);
> >>> // digitalWrite(in3, LOW);
> >>> // digitalWrite(in4, LOW);
> >>> }
> >>> void demoTwo()
> >>> {
> >>> // this function will run the motors across the range of possible
> speeds
> >>> // note that maximum speed is determined by the motor itself and the
> operating voltage
> >>> // the PWM values sent by analogWrite() are fractions of the maximum
> speed possible
> >>> // by your hardware
> >>> // turn on motors
> >>> digitalWrite(in1, LOW);
> >>> digitalWrite(in2, HIGH);
> >>> // digitalWrite(in3, LOW);
> >>> // digitalWrite(in4, HIGH);
> >>> // accelerate from zero to maximum speed
> >>> for (int i = 0; i < 256; i++)
> >>> {
> >>> analogWrite(enA, i);
> >>> // analogWrite(enB, i);
> >>> delay(20);
> >>> }
> >>> // decelerate from maximum speed to zero
> >>> for (int i = 255; i >= 0; --i)
> >>> {
> >>> analogWrite(enA, i);
> >>> // analogWrite(enB, i);
> >>> delay(20);
> >>> }
> >>> // now turn off motors
> >>> digitalWrite(in1, LOW);
> >>> digitalWrite(in2, LOW);
> >>> // digitalWrite(in3, LOW);
> >>> // digitalWrite(in4, LOW);
> >>> }
> >>> void loop()
> >>> {
> >>> demoOne();
> >>> delay(1000);
> >>> demoTwo();
> >>> delay(1000);
> >>> }
> >>>
> >>>
> >>> Wired it all up with a 12V 5A power supply and the stepper shaft
> twitched a bit , but the L298N emitted a puff of smoke and the heatsink got
> very hot !
> >>>
> >>> Now I've checked the Arduino Uno and it seems aok.
> >>>
> >>> The stepper motor measure 2.7 Ohm from the +12v rail to nearest motor
> pin, ditto earth to nearest pin.
> >>>
> >>> Applying 1.5V at 0.8 Amp to the each of the pair of wires the shaft
> stops being rotatable. the two motor wires are at infinity.
> >>>
> >>> I've assumed that's a sign that I've not killed the stepper motor.
> >>>
> >>> Now before I get another L298N, I thought a few precautions are worth
> while ! Slaying a series of L298N's doesn't seem that smart !!! *LOL*
> >>>
> >>> Any thoughts from anyone as to what to investigate next ? (I thought
> perhaps the software was wrong for this model of stepper motor ? I'm
> capable of making crass errors here..)
> >>>
> >>> : )
> >>>
> >>> Tim_1
> >>>
> >>> On 19 April 2015 at 11:41, Ceri Clatworthy <ceri.clatworthy at gmail.com>
> wrote:
> >>>>
> >>>> Reverse. ..
> >>>>
> >>>> If ULN 2003...
> >>>> The wiggle pins in other direction! !!
> >>>>
> >>>> On 19 Apr 2015 11:23, "Tim Moore" <timmoore47 at gmail.com> wrote:
> >>>>>
> >>>>> Many thanks Ceri for the tip ! Greatly appreciated !
> >>>>>
> >>>>> : )))
> >>>>>
> >>>>> Tim_1
> >>>>>
> >>>>> On 19 April 2015 at 11:21, Tim Moore <timmoore47 at gmail.com> wrote:
> >>>>>>
> >>>>>> Update:-
> >>>>>>
> >>>>>> It may not be very riveting but the change to 6400 (and the
> deletion of */ at the top of the code worked fine !
> >>>>>>
> >>>>>> the count for
> >>>>>> 90 deg was 500 and time 52.5 secs
> >>>>>> 180 deg was 1000 105
> >>>>>> 270 deg was 1500 157.5
> >>>>>> 360 deg was 2000 210 secs ( 3m 30 secs) approx
> >>>>>>
> >>>>>> (I hope !)
> >>>>>>
> >>>>>> Now this might be very boring, but it also might help a Newbie to
> stepper motors test their new purchase out too !
> >>>>>>
> >>>>>> Anyone know if the controller board can make it go in reverse ?
> >>>>>>
> >>>>>> : )))
> >>>>>>
> >>>>>> Tim_1
> >>>>>>
> >>>>>> On 19 April 2015 at 10:23, Tim Moore <timmoore47 at gmail.com> wrote:
> >>>>>>>
> >>>>>>> I've been trying to get this working on a 28BYJ-48 with ULN2003
> cheapest stepper motor set up.
> >>>>>>>
> >>>>>>> Created 30 Nov. 2009
> >>>>>>> by Tom Igoe
> >>>>>>>
> >>>>>>> */
> >>>>>>>
> >>>>>>> #include <Stepper.h>
> >>>>>>>
> >>>>>>> const int stepsPerRevolution = 1440; // change this to fit the
> number of steps per revolution
> >>>>>>> // for your motor
> >>>>>>>
> >>>>>>> // initialize the stepper library on pins 8 through 11:
> >>>>>>> Stepper myStepper(stepsPerRevolution, 8,9,10,11);
> >>>>>>>
> >>>>>>> int stepCount = 0; // number of steps the motor has taken
> >>>>>>>
> >>>>>>> void setup() {
> >>>>>>> // initialize the serial port:
> >>>>>>> Serial.begin(9600);
> >>>>>>> }
> >>>>>>>
> >>>>>>> void loop() {
> >>>>>>> // step one step:
> >>>>>>> myStepper.step(1);
> >>>>>>> Serial.print("steps:" );
> >>>>>>> Serial.println(stepCount);
> >>>>>>> stepCount++;
> >>>>>>> delay(100);
> >>>>>>> }
> >>>>>>>
> >>>>>>>
> >>>>>>> Spec:-
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> Voltage : 5V
> >>>>>>> Diameter : 28mm
> >>>>>>> Step angle : 5.625 x 1 / 64
> >>>>>>> Reduction ratio : 1 / 64
> >>>>>>> 5 Line 4 phase
> >>>>>>> Current draw : 92mA
> >>>>>>> Operating Frequency : 100pps
> >>>>>>> Dimensions : 35mm x 28mm
> >>>>>>> 4 mounting holes
> >>>>>>> ULN2003 chip
> >>>>>>> A, B, C, D four-phase status LED
> >>>>>>>
> >>>>>>> ___
> >>>>>>>
> >>>>>>>
> >>>>>>> Now the divide by 64 seems to be a stumbling block ?
> >>>>>>>
> >>>>>>> What I'm trying to do is use the 1.8 degree characteristic to get
> 100 pulses to achieve a total rotation of 180 degrees to the shaft.
> >>>>>>>
> >>>>>>> A period of anything up to two minutes is fine for the 180 degree
> rotation.
> >>>>>>>
> >>>>>>> So far it twitches a bit but not much else e.g. not very exciting.
> >>>>>>>
> >>>>>>> Should the stepsPerRevolution = 1440 be changed to
> stepsPerRevolution = 6400 ?
> >>>>>>>
> >>>>>>> Maybe I've got the Arduino pins a tad wrong ?
> >>>>>>>
> >>>>>>> : )
> >>>>>>>
> >>>>>>>
> >>>>>>> Tim_1
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>>
> >>>>>>> On 18 April 2015 at 19:58, Justin Mitchell <
> justin at swansea.hackspace.org.uk> wrote:
> >>>>>>>>
> >>>>>>>> Yes, one motor one step-stick.
> >>>>>>>>
> >>>>>>>> Control it from an arduino, or any other micro, just needs two
> GPIO
> >>>>>>>> lines.
> >>>>>>>>
> >>>>>>>>
> >>>>>>>> On Sat, 2015-04-18 at 16:04 +0100, Tim Moore wrote:
> >>>>>>>> > So a single 'step-stick' would do it ?
> >>>>>>>> >
> >>>>>>>> >
> >>>>>>>> > Many thanks for responding !
> >>>>>>>> >
> >>>>>>>> > : )))
> >>>>>>>> >
> >>>>>>>> >
> >>>>>>>> > Tim_1
> >>>>>>>> >
> >>>>>>>> >
> >>>>>>>> > On 18 April 2015 at 15:09, Justin Mitchell <
> justin at discordia.org.uk>
> >>>>>>>> > wrote:
> >>>>>>>> > It's an interface for all the stuff you need to drive a
> 3d
> >>>>>>>> > printer, takes 5 step-sticks for stepper driving, has
> power
> >>>>>>>> > MOSFETs to pwm the hotends and heated bed, and a bunch
> of
> >>>>>>>> > inputs for end stops and thermistors. You plug it into
> an
> >>>>>>>> > Arduino mega board, install some software like Marlin
> and it
> >>>>>>>> > can run your printer, or mixed to control a CNC mill or
> laser
> >>>>>>>> > cutter.
> >>>>>>>> >
> >>>>>>>> > Way over kill for driving one motor :)
> >>>>>>>> >
> >>>>>>>> > On 18 Apr 2015 2:51 pm, Tim Moore <timmoore47 at gmail.com
> >
> >>>>>>>> > wrote:
> >>>>>>>> > >
> >>>>>>>> > > Wow ! Loads of interesting links and ideas !
> >>>>>>>> > >
> >>>>>>>> > > Its a very slow rotation, so inertia is not a problem.
> >>>>>>>> > >
> >>>>>>>> > > Is a 'RAMPS 1.4' useful ? what does it do ?
> >>>>>>>> > >
> >>>>>>>> > > Many thanks to all who have responded !
> >>>>>>>> > >
> >>>>>>>> > > : )))
> >>>>>>>> > >
> >>>>>>>> > > Tim_1
> >>>>>>>> > >
> >>>>>>>> > > On 18 April 2015 at 13:57, oliver Oliver
> >>>>>>>> > <oliver at oliverjenkins.com> wrote:
> >>>>>>>> > >>
> >>>>>>>> > >> Think about pulleys or gears. I don't know if you
> want the
> >>>>>>>> > pole to stop at a particular point or not. Inertia in
> 1m pole
> >>>>>>>> > will be higher than braking force of a stepper motor.
> So it
> >>>>>>>> > will continue to spin after you stop the motor. Giving
> you an
> >>>>>>>> > unpredictable 180 plus rotation.
> >>>>>>>> > >>
> >>>>>>>> > >> For a pulley arrangement look at t5 timing belts.
> you can
> >>>>>>>> > easily print the pulleys using a reprap. There are
> libraries
> >>>>>>>> > on thingiverse.
> >>>>>>>> > >>
> >>>>>>>> > >> A worm gear would be better, but you can't print
> those.
> >>>>>>>> > >>
> >>>>>>>> > >> Oli
> >>>>>>>> > >>
> >>>>>>>> > >> On 18 Apr 2015 12:33, "Tim Moore" <
> timmoore47 at gmail.com>
> >>>>>>>> > wrote:
> >>>>>>>> > >>>
> >>>>>>>> > >>> I'm trying to carefully rorate a metre long light
> weight
> >>>>>>>> > pole through 180 degrees.
> >>>>>>>> > >>>
> >>>>>>>> > >>> I've got a Stepper Motor type 28BYJ-48 working
> fine, but
> >>>>>>>> > I'm sure I need one that is a bit more chunky !
> >>>>>>>> > >>>
> >>>>>>>> > >>> I've got a 17HS16-2004S NEMA 17 (42 x 42 mm) high
> torque
> >>>>>>>> > 1.8 degree stepper motor on the way with a controller
> card
> >>>>>>>> > >>>
> >>>>>>>> > >>> But I've not got a very clear vision yet what else
> I might
> >>>>>>>> > need and if there is any Arduino example software
> listing that
> >>>>>>>> > would be good to use to get it to work ?
> >>>>>>>> > >>>
> >>>>>>>> > >>> I don't want to reinvent the wheel ! *LOL*
> >>>>>>>> > >>>
> >>>>>>>> > >>> Any thoughts anyone ?
> >>>>>>>> > >>>
> >>>>>>>> > >>> : )))
> >>>>>>>> > >>>
> >>>>>>>> > >>> Tim_1
> >>>>>>>> > >>>
> >>>>>>>> > >>> _______________________________________________
> >>>>>>>> > >>> Hackspace mailing list
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> >>>>>>>> > >>>
> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
> >>>>>>>> > >>>
> >>>>>>>> > >>
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> >>>>>>>> > >>
> >>>>>>>> > >
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> >>>>>>>> >
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