[Swansea Hackspace] Arduino Uno interface to a 3D printer stepper motor.
Ceri Clatworthy
ceri.clatworthy at gmail.com
Fri May 8 22:03:23 BST 2015
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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>
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