[Swansea Hackspace] Arduino Uno interface to a 3D printer stepper motor.
Ceri Clatworthy
ceri.clatworthy at gmail.com
Sat May 9 08:22:50 BST 2015
I am guessing that they are capacitors
On 9 May 2015 07:09, "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
>>>>>>>> > >>> Hackspace at swansea.hackspace.org.uk
>>>>>>>> > >>>
>>>>>>>> http://swansea.hackspace.org.uk/mailman/listinfo/hackspace
>>>>>>>> > >>>
>>>>>>>> > >>
>>>>>>>> > >> _______________________________________________
>>>>>>>> > >> Hackspace mailing list
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>>>>>>>> > >>
>>>>>>>> > >
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>>>>>>>> >
>>>>>>>> >
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>>>>>>>>
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>>>>>>>
>>>>>>>
>>>>>>
>>>>>
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