Search for Stepper in Topics


What Stepper Motor Is This, IF it is a stepper??????????

Hi I am a starting level, I mean mail room like even, electronics enthusist, and have been working on a project to make a wifi transmitted dc motor video camrea, with pan/tilt, zoom focus, IR All controled and veiwed through a wifi network and on a pc. I have almost all the parts and set up is going great with the addition of a Lens I salvaged from an 1984 video camrea, ya know the ones you had to hook up to your vcr just to get it to work. Well It was a simple two motor set up with a high quitly lens. As I yanked the lens configuration, ever so gently, the horrer poured forth from my face as I realized that even though one of the motors had 2 wires from it, the secound had 4. I have no ideal about motor orvoltage identification. I am so worryed about hooking up any old power sorce and hoping for the best. I really wanna use this lens but don't wanna fry the motors. COuld any one help me out?? I have included a PDF. of the circuit lay out of the camrea itself my GF was so gifted to find and a couple of pictures of the actual motors and wire set up. If any one could tell me what I am working with and what voltage input I need it would be duely welcomed. And if possable would anyone be able to tell me for the smaller 2 led motor as well?? It's got 2334H printed on it and is from the Nihon Mini Motor INC. Thank you......

Topic by pumpkinhead    |  last reply


Stepper motor

I have a small size sanyo denki 103 series stepper motor. I wanted to use it using L298 driver. What will be the connections  

Question by UsmanR1    |  last reply


Arduino + Stepper

Hi! I have an Arduino nano and a Minebea PM55L stepper motor and I have to connect these two together. I read the Arduino tutorials, and got a ULN2003 chip. The thing I am unsure of is the power supply and which wires of the motor do what or should be connected to what. There's 6 of them and I really don't want to fry anything if at all possible. Could somebody help out, please?

Topic by TashaDax    |  last reply


Stepper Motors..

I recently pulled two stepper motors out of a working IBM dot-matrix printer. One larger, 3v one with 1.8 steps. The other is a smaller, 9.5v one with 7.8 steps. I am more interested in the large one right now. I managed to find out that the large one has center-tapped coils. I also found out that Coil 1 is red-white-brown, coil 2 is blue-black-yellow. I found the schematic below on http://ashishrd.blogspot.com/2007/09/computer-controlled-stepper-motor.htmlI was wondering how this could be adapted to control my motor from a PC program with the ULN2003 (that chip sounds like UT2003)? Here are the complete residences of what I found on the wires with a multimeter, in case that helps. Resistances:Red to Brown: 8 ohms (or 7 some times)Red to White: 4 ohmsWhite to Brown: 4Blue to Yellow: 7Yellow to Black: 4Black to Blue: 4

Topic by l0cke    |  last reply


stepper motor

Wondering if any one knows how to control stepper motors via Hand wheels. By rotating the wheel you should be able to control the rotation of the wheel either clock wise or ccw. I do not want to interface the motor through a computer.

Topic by rajivraj    |  last reply


Steppers and EMF.? Answered

I have build this Bi-Polar stepper circuit and it works great on the bread board. I etch a board 3 times, 2 with heat transfer and 1 with photo resist. I use 2 completely separate power supplies but with the PCB's i think i am experiencing EMF or feed back. I am using an adjustable schmidt trigger for the clock. What happens is i can hardly get any rpm's, sometimes if the trigger is set just wright it will turn up fairly well, at that time if i try full step the stepper stops turning or will reverse sometimes, if i try ccw it may or may nor reverse and i may stay in what ever direction and any given time . Now at a slow rpm full step normally work's and cw/ccw may or may not work, also it can trigger the half or full step. Also i can disconnect one coil and the stepper will continue to turn, If i try that with the other coil the stepper will stop. So it looks like it is only running on one coil. Is that possible? Keep in mind i have bread boarded it and work's fine. Its just on the 3 pcb's that all this happens. As for the diodes it seams to work better with 1N4001's than 1N4148's I have checked every trace with an DMM and made sure they are going to the correct pins ect. I have tried different IC's L297 and L298 and steppers 2 different kinds and multiples of each. So i am thinking this is EMF, feedback, or a design problem. I have tried to eliminate most every thing i can think of. Comments?     

Question by WWC    |  last reply


Stepper Enable Answered

Seems my completed code is not completed yet. I need to enable the stepper. I added enable_pin = 13 so it will spin free. It works with the push button until the keypad is used the no more button pin, but will continue to work with the keypad properly.  Is there a correct way to use enable for 2 inputs, button and keypad? #include #include #include Password password = Password( "4444" ); //password to unlock door, can be changed const byte ROWS = 4; // Four rows const byte COLS = 3; // columns const int stepsPerRevolution = 200;  // change this to fit the number of steps per revolution // Define the Keymap char keys[ROWS][COLS] = { {'1','2','3',}, {'4','5','6',}, {'7','8','9',}, {'*','0','#',}, }; byte rowPins[ROWS] = { 5, 4, 3, 2 };// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins. byte colPins[COLS] = { 8, 7, 6,};// Connect keypad COL0, COL1 and COL2 to these Arduino pins. Stepper myStepper(stepsPerRevolution, 9,10,11,12);            int enable_pin = 13; int button_pin = A0; int button_pinstate = 0; // variable to store current pir state //int lastpirstate = 0; // variable to store last pir state int lastbutton_pinstate = 0; int pos = 60; int pos2 = -60; // Create the Keypad Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );   unsigned long offtime;   boolean  helper_light_is_on = false; // helper light off        void setup(){                                                              myStepper.setSpeed(60);  // set the speed at 60 rpm:   pinMode( button_pin, INPUT);   pinMode(enable_pin, OUTPUT);   digitalWrite(enable_pin, LOW);   digitalWrite(button_pin, HIGH); // pull-up   Serial.begin(9600);   Serial.write(254);   Serial.write(0x01);   delay(200);   pinMode(15, OUTPUT);  //Helper light   pinMode(16, OUTPUT);  //green light   pinMode(17, OUTPUT);  //red light     keypad.addEventListener(keypadEvent); //add an event listener for this keypad } void loop() { button_pinstate = digitalRead(button_pin);   if(button_pinstate != lastbutton_pinstate) {     if(button_pinstate == LOW) {       digitalWrite(enable_pin,HIGH);     myStepper.step(pos);      } else{        myStepper.step(pos);        delay(2000);        myStepper.step(pos2);         digitalWrite(enable_pin,LOW);     } }     static int counter = 0;     if ((++counter & 0x3f) == 0)     Serial.println();     delay(100);     keypad.getKey();     myStepper.step(0);     process_helper_light(); } void keypadEvent(KeypadEvent eKey) {   switch (keypad.getState())   {     case PRESSED:       // a key is pressed so light the helper light       helper_light_is_on = true;       digitalWrite(15,HIGH);       offtime = millis() + 5000;  // set the offtime for 30 seconds in the future             Serial.print(" enter: ");       Serial.println(eKey);       delay(10);       Serial.write(254);       switch (eKey)       {         case '*':           checkPassword();           delay(1);           break;         case '#':           password.reset();           delay(1);           break;         default:           password.append(eKey);           delay(1);           }   } } void checkPassword() {   if (password.evaluate())  //if password is right unlock door   {      Serial.println(" Accepted");     Serial.write(254);     delay(10);      digitalWrite(enable_pin,HIGH);     myStepper.step(pos);     Serial.print(" open ");     digitalWrite(16, HIGH);//turn on green led     delay(2000); //wait 5 seconds     digitalWrite(16, LOW);// turn offgreen led     myStepper.step(pos2);      digitalWrite(enable_pin,LOW);   }    else   {     Serial.println(" Denied"); //if passwords wrong keep door locked     Serial.write(254);     delay(10);     myStepper.step(0);     Serial.println(" locked ");         digitalWrite(17, HIGH); //turn on red led     delay(2000); //wait 5 seconds     digitalWrite(17, LOW);//turn off red led   digitalWrite(enable_pin,LOW);     }  //Closes first else }  //Closes Check password // this routine turns off the light when the timer expires void process_helper_light(void) {   if (helper_light_is_on)   {     if (millis() >= offtime)     {       digitalWrite(15,LOW);  //turn off the helper light       helper_light_is_on = false;     }   } }

Question by WWC    |  last reply


Stepper motor help? Answered

Someone tell me how to https://www.youtube.com/watch?v=WQKsll_qeMM only for 90 degree both sides

Question by basim.moulana    |  last reply


Transform a Servo into stepper?

Hi, I'm wondering if it is possible to transform, with mecanisms like in watchmaking, a sigle servo into a stepper. When the servo turns left, a crank will turn of a fixed amount of degree in the clockwise direction. When the servo turns right, a crank will turn of a fixed amount of degree in the anti-clockwise direction. The main advantage of this is that we can have a stepper motor created with a servo. I'm searching such projects without results... Am I the first one to think about this ? How can I imagine such a mecanical project ? Thank you

Question by janolap1    |  last reply


controll a stepper motor

Can you controll a stepper motor with push switches no circuit? i need a 12v motor with pllanty of speed  torque for a diy cnc but i want to controll it manualy with a joystick made with push switched can i just apply power to a stepper motor like a hobby 12v dc motor and run it without a circuit?

Question by skullkeeper80    |  last reply


alternative stepper motors?

I recently tore into a couple printer-scanners looking for stepper motors. Unfortunately all I found were some DC motors that seem to be tied into some sort of sensor that acts like a step counter. Does anyone know what they are called and how to use them in place of stepper motors for a CNC machine? As a side note, I have a very limited understanding of IC function, think of me as having lived a purely analog lifestyle.

Topic by 50ul84n3    |  last reply


stepper motor help

Hi, i need help in building a cnc machine. not the hardeware just the circuit. i already saw this https://www.instructables.com/id/EG9RXG6F54HJ7SL/ and the circuit that it included but i coulden't understand the circuit. there is this circuit http://www.aaroncake.net/circuits/stepper.asp which i have already built but need help connecting it to my parallel port on my computer. i would really appreciate it.

Topic by dark_inuyasha    |  last reply


Astrosyn Stepper Motors

I have 2 Astrosyn Stepper Motors that I bought and ended up not using. I was going to build a small cnc machine first but decided to go bigger with the first on I built. So i bought bigger steppers for my application. I bought them for 20 bucks each and now I am selling them for 20 bucks plus shipping for both. I would like to use paypal for any transactions. Thanks for looking.

Topic by r1dd1ck913    |  last reply


Stepper Power Help???

I trying to design a cheap & easy (not ideal) bi polar stepper driver using the following components: 1. (1) A Bi-Polar motor rated at 12V 1A. 2. (4) 10A 250V Dual Throw, Single Pole Relays. 3. (1) Arduino UNO Microcontroller. 4. (1) ATX Power Supply. I have the switching logic all correct from the UNO to the relays, and I have all of the wiring correct on the power side of the relay. The problem comes down to shorting the PSU.My thought is the following, and I hope you gurus can either confirm, or correct my thought process (pretty please, and thank you). Please see the Attached Pic for a basic schematic of what I'm doing. 12v = 1A * 12OHMS 12v * 1A = 12 Watts Does this mean that somewhere within the power loop, I need a 12 Watt 12 OHM Resistor, to eliminate shorting out the PSU? If this is true, what would be a practical solution other than using a big exposed spring, bar, etc... that would by its sheer mass resist all of this power?

Question by abstract_genius    |  last reply


disc stepper motor

Ok im new to the tech world but i have a an idea haven to do with a stepper motor that is in disc form and capable of being programmed but i dont know what parts i would need and how to go about it any insight or possibly a parts list to do it? please and thank you

Topic by mobilesuit990  


Android Stepper Motor?

So I am working on controlong shades in my house with my android phone and my arduino over bluetooth. i was thinking on using a steper motor to act as a gear to open and close the blinds. could anyone help me with any toturials or a link to any documentation involving bluetooth stepper control? Plese help.

Question by broskiz    |  last reply


3 Bipolar Steppers

 I am selling three stepper motors that I was wrongly shipped by a vendor. For specs, PM Me. 10.00 Each

Topic by 16zzundel5    |  last reply


Stepper Motor Music!

Some guy used steppers to play tones and music using an arduino :DSource And a few others

Topic by ReCreate    |  last reply


Gears for Servos and Steppers

Hey guys (and gals), I've been researching this a lot, but I still haven't the solution.  When you are working on a project and you need a gear for your stepper or servo, where do you acquire it?  For example I work a lot with TowerPro 996 servos, but I haven't found any third parties selling gears for them.   Same thing for motors.  If you are using a stepper motor, like a NEMA or something where do you find a gear that attaches to it? 

Topic by Deft Punk    |  last reply


Stepper motors for sale

I have a few large stepper motors I pulled out of a liquid sinilation counter. I'm not exactly sure what thier value is, similair motors are priced around 50-60$ new, so offers are welcome. They operate ~6v and have 0.90 degree steps, I believe they are bipolar. I can upload pics if needed.

Topic by martzsam    |  last reply


Stepper motor controllers

Does anyone know where I can buy some bipolar stepper motor controllers and an H-bridge in one package? Or even better, schematics/pcb layout of a driver board?UPDATE:Does anybody have any experience with the Easy Driver? It seems like a cheap alternatives to some of the other available controllers, but I just want to know if you get what you pay for.

Topic by ongissim    |  last reply


Precision Stepper motor????

Is there a precision stepper motor and programming hardware that i could program to go to a certain 1/50 of a turn. I would use it for a locker lock unlocker, 3 digit combo lock. What are my best options for cheap?? Thank you

Question by theboygenius    |  last reply


stepper motor question

Ok, i am trying to make a chain clock, its just a clock with a gear instead of a minute hand that turns a chain with 12 numbers on it. my problem  is; the chain i am using is too heavy for a conventional quarts movement. i would like to use a stepper motor but all the drive circuits i find need an arduino. are there any simple circuits i can make, to use a stepper motor for a clock? i do have some circuitry skills so i can work around some stuff. thanks for the help :)

Topic by golddigger1559    |  last reply


Stepper motor driver?

Hi! I am trying to find a good h-bridge for a 3 volt stepper motor. Basically my plan is to build a stepper motor controller with an arduino for controlling various functions in a model kit. I have the arduino-kit and the motors. But I need a good reference for a h-bridge, but all i can find are chips rated for much larger drive currents. Also exactly how hot does a hbridge get when under load? I would like to integrate the bridges into the kit, but since it is plastic, I would like to know in advance how hot it gets, and if it gets too hot I'll have to look at another solution.Any help appreciated! PS. If you can please put the hbridge part ID in your answer for easy reference. DS.

Question by feldreich    |  last reply


CNC stepper motor Answered

Hello, I would like to use my 3 printer scanners I recently salvaged for a CNC. Would you expect the motors to be able to cut aluminum with a multi-speed dremel? If there is enough torque, it would be sufficient to make a 3d printer right?

Question by jbaker22    |  last reply


Overheating stepper shield

Hi Everyone, As I'm a newbie, please forgive my ignorance for asking what maybe an obvious question.  I've got an Arduino Uno and a DK Electronics v1.0 motor shield (powered separately at 12v). I downloaded a library and managed to get a NEMA 23 stepper motor working. Trouble is, the chip on the shield doing all the work gets scarily hot in next to no time. The rated current of the motor is 1A, although when I tried it, it was under no load. I've checked the power consumption when driving the motor from a standalone controller and it's drawing no more than 250mA. Do you guys think:- a) I'm overloading the shield? b) I've got a fault? c) I scare too easily? Any feedback will be gratefully received. Thanks

Topic by Liebherrguy    |  last reply


Stepper Motor Library

Hi! Sorry, I was unable to put library below. So simple and yet so not so simple. How do I get the library in the folder so the program compiles/? Thanks 56Frank library for 28BYJ48 Stepper motor and ULN2003 driver. Here is the source code for our 28BYJ48 stepper motor, ULN2003 driver library, as well as an implementation. Check out the diagram for the wiring. The header file: __________________________________________________________________ #ifndef Stepper_h #define Stepper_h class StepperMotor { public:     StepperMotor(int In1, int In2, int In3, int In4);    // Constructor that will set the inputs     void setStepDuration(int duration);    // Function used to set the step duration in ms     void step(int noOfSteps);    //    for(int sequenceNum = 0;  sequenceNum <= noOfSteps/8; sequenceNum++){         for(int position = 0; ( position < 8 ) && ( position < ( noOfSteps - sequenceNum*8 )); position++){             delay(duration);             for(int inputCount = 0; inputCount < 4; inputCount++){                 digitalWrite(this->inputPins[inputCount], sequence[(int)(3.5 - (3.5*factor) + (factor*position))][inputCount]);             } Arduino         }     } } _______________________________________________________________________ An implementation: _______________________________________________________________________ #include StepperMotor motor(8,9,10,11); void setup(){   Serial.begin(9600);   motor.setStepDuration(1); } void loop(){   motor.step(1000);   delay(2000);   motor.step(-1000);   delay(2000); } Step a certain number of steps. + for one way and - for the other     int duration;    // Step duration in ms     int inputPins[4];    // The input pin numbers }; #endif ___________________________________________________________________ The cpp file: ___________________________________________________________________ #include #include StepperMotor::StepperMotor(int In1, int In2, int In3, int In4){     // Record pin numbers in the inputPins array     this->inputPins[0] = In1;     this->inputPins[1] = In2;     this->inputPins[2] = In3;     this->inputPins[3] = In4;     // Iterate through the inputPins array, setting each one to output mode     for(int inputCount = 0; inputCount < 4; inputCount++){         pinMode(this->inputPins[inputCount], OUTPUT);     }     duration = 50; } void StepperMotor::setStepDuration(int duration){     this->duration = duration; } void StepperMotor::step(int noOfSteps){     /*         The following 2D array represents the sequence that must be         used to acheive rotation. The rows correspond to each step, and         the columns correspond to each input. L     */     bool sequence[][4] = {{LOW, LOW, LOW, HIGH },                           {LOW, LOW, HIGH, HIGH},                           {LOW, LOW, HIGH, LOW },                           {LOW, HIGH, HIGH, LOW},                           {LOW, HIGH, LOW, LOW },                           {HIGH, HIGH, LOW, LOW},                           {HIGH, LOW, LOW, LOW },                           {HIGH, LOW, LOW, HIGH}};                           int factor = abs(noOfSteps) / noOfSteps;    // If noOfSteps is +, factor = 1. If noOfSteps is -, factor = -1     noOfSteps = abs(noOfSteps);    // If noOfSteps was in fact negative, make positive for future operations     /*         The following algorithm runs through the sequence the specified number         of times     */

Topic by 56Frank    |  last reply


What is the difference between a stepper driver and a stepper controller?

I am wanting to build a circuit to drive my stepper motors and control them with the PC with software like Mach 3, or something similar. My question is what is the difference between stepper driver and stepper controller. Do I need a driver for each motor and do the drivers connect to the controller. Newb here and trying to understand before I attempt.

Question by shootmequick    |  last reply


I need a stepper motor and stepper driver mastermind!!

Hey All, Bit of an odd one.I am currently building an electric camera slide with an auto-panning feature, the build is almost complete, intend to share the build process on youtube.The main goal here was to build an auto electric slide, that requires NO programming/coding, Making it easy for people who are not 'electronic savvy'.I purchased one of these R/C Drivers: https://www.aliexpress.com/item/Stepper-Motor-Driver-2-phase-4-wire-Controller-Speed-Adjustable-with-Remote/32642556068.html?spm=a2g0s.9042311.0.0.27424c4ddZKyq5 Super simple to set up, and it works. However, its steps are really big, so when the slide is running slow, it is basically shuddering/shaking.I have purchased some A4988 Stepper Motor Drivers, and the plan was to try and rig one of these up in series, however, I am very new to stepper motors and how they are set up. If anyone has any advice or recommendations on how I could wire these up together, It would be greatly appreciated.

Question by KyleofAsgard    |  last reply


Can i use Stepper motor Stepper Motor 42BYGH4417 in uln2003 ???

Can i use Stepper motor Stepper Motor 42BYGH4417 in uln2003 ??? Please answer, i need help :(  sorry im newbie 

Question by dannisa    |  last reply


Help! Cnc stepper driver

Help,I need to know whether this stepper circuit design is capable of driving stepper motors for cnc milling.. Here is the design www.pminmo.com/3axispic/3axispic.htm

Topic by quadcube    |  last reply


Stepper motor, driver, microcontroller

I am looking for someone to help me with with a stepper motor. (ofcourse you get paid) I would like to have a small stepper motor something like this(the main thing is that it isnt bigger then WxHxD 50mmX60mmx15mm) . http://dativoweb.net/sites/default/files/u33/ItaliaImballaggio/5_14_delta_line_motore.jpg I would like a driver and a microcontroller to this almost in the same size, would love to have this thiner thou. I would like to have this programmed, like the stepper to do 1 revolution in 180 minutes (1 full rotation in 3 hours) if it possible to get it running on batteries it be great! Folow the link to a image i made to se how i like it to be. http://lajkade.se/stepper.png Is this possible? And is it someone who got the knowledge to do this? Awaiting your answere! Best regards Jacob

Topic by soderhjelm    |  last reply


Help with Canon Pixma Stepper

Hey all- Looking for some help with this little motor I pulled from a scrap Canon Pixma.  I want to use it to drive a very basic tumbler for 3d printed parts. I'm using it and the geared shaft to drive the drum.  Can I run this directly from a wall-wart, and if so, can you tell me what flavor to look for?  I'd like to just solder barrel connectors on and run with it. Thanks, Jeff

Topic by jeffw75    |  last reply


Stepper motor voltage too low? Answered

I'm getting started with Stepper motors and I got one on ebay, it's MINEBEA NEMA23 2.5V/1.8 AMPS 1.8DEG/STEP (model# 23LM-C045-01H). I'm a bit confused by it's low voltage. Am I reading it correctly, it's 2.5Volts?  Stepper driver that I have requires at least 8 Volts (it's Arduino with rugged motor driver shield), so is it safe to drive with motor with voltage of 9 or 12 volts?  How would one drive such motor at 2.5VDC?

Question by bratan    |  last reply


5v stepper motor ? How to make it work ?

Hi I recently bought a 5v stepper motor ? what should i do to make it work .I want to fix it to my camera to move it in right and left directions ? how do i start to do this ?

Question by vasan406    |  last reply


any help running six stepper motors? Answered

I have six stepper motors and i am planning to build a robotic arm. is it possible to build a driver curciut to run the six motors from an arduino to make the arm move. if its not possible then how would i build a controller to drive six uln2003 driver chips

Question by devicemodder    |  last reply


How to control KH56JM2 stepper motor using Arduino?

Dear all, could you please help me? I want to control this stepper motor from Japan Servo CO. Model KH56JM2.  I don't have the wires for this motor. The datasheet of this motor in page 16 of this file http://www.e-jpc.com/pdf/Hybrid-Stepping-Motors-and-Drivers-size-23-56mm-square.pdf

Question by Neuo13    |  last reply


Can anyone help with getting a stepper motor up and running?

I am looking to use a stepper motor for a project I am about to start. I have never used a stepper motor before but it looks the best solution for the job. I have a small stepper motor (Unipolar 18 deg stepper motor,12V 0.4W 170Ω) and a controller (Linear stepper motor controller,350mA). I want to hook the motor up to two momentary switches where the press of one switch turns the motor one turn in one direction and the other switch turns the motor one turn opposite.  Do I need to get a drive board? Do I have to link through a controller?  Any help at all will be most appreciative.

Question by cgalmrott    |  last reply


CDROM stepper motor problem with movement

I have been having intermittent problems with my cdrom stepper motor. I had a four pin motor soldered to a bare copper wire. I used the pins not the little ribbon cable and I left the ribbon cable attached because I figured, as soon as I snip it off I would regret it later. The other end connects to a breadboard that is in line with the stepper input to the EasyDriver motor controller. I have been using GRBL controller on my PC and when I tested it the first time in a vertical position it would just wobble around, not moving up nor down. I thought the stepper motor was bad so I got another one. The second was wired the same way, 4-pins, and it worked in the vertical no problem. Then later, while working on the rest of my project the second cdrom motor that was working did that same wiggle without moving up or down. I realized that the solder connections were very close together and that two pins were electrically connected. I modified the wire to basically a homemade male to male jumper wire. The extra pin made the room I needed to unsolder the two pins. Once again the motor worked up and down with no wobble. I have done nothing to modify the cdrom stepper any further and went to test my motor today after a couple weeks hiatus and once again, wobble with no up nor down motion. At this point I am stumped. I have reason to believe that my solder skills are lacking and that my homemade jumper has broken internally inside my shrink tubing where I cannot immediately see it but If anyone else has had this problem and knows how to rectify it please let me know. I hope there is enough info here laying out my problem and that someone can lead me in the right direction. If it also helps, I have checked my pin out and I do not feel it is backwards or crossed. I checked the resistance between the four pins and the end of my "jumper" and is approximately, 40, 20, 40, 100 ohms for A-, A+, B-, B+, respectively. I am really not sure what these number would mean but my buddy told me to check the continuity from end to end.

Topic by dankozi713    |  last reply


which 4 wires to use among my 6 wire stepper motor?

Which 4 wire to use among my 6 wire stepper motor ? i tried to measure the resistance but got all confused ! 

Question by Cieloroy    |  last reply


how to find the amount of steps for a stepper motor to make one complete revolution?

My stepper motor is a unipolar 12volts .66 ohms from center tap ,(not taking in to consideration the resistance of the digital ohm meter I used). I am trying to find the amount of steps per revolution. I do not have any more data on the above mention motor.

Question by winstonwa    |  last reply


How to drive Bipolar stepper motor using MTD2006 dual H-bridge

Hi I'm trying to drive a Bi-polar stepper motor using MTD2006 bridge which I got from old copy machine.But when I download datasheet for this IC found that input signals must fed to drive the motor (ENA A,PHY A,ENA B,PHY B ) As I understand ENA signal must be (High) always! So I'm confused how to drive this IC using Arduino? Thanks

Topic by MHA6  


If I attempt to weld a sprocket onto the shaft of a stepper motor will it damage the motor?

I suspect the answer is yes....anyone got any advise on how to fasten sprockets onto shafts?

Question by afridave    |  last reply


maintain initial and end position stepper motor without energy loss

Hi all, In a project of automated vertically folding curtain I have the problem that whatever the position of my curtain (8 kg) is, the motor is always drawing current. Let's say the curtain stays for 8 hours in the same position, then during these 8 hours the motor is wasting lots of energy. Is there a method/mechanical system which can be used to make sure the motor only uses energy ("works") if the position of the curtain has to change? Thanks in advance

Topic by mmsyx    |  last reply


how to compare two stepper motors with the same torque based on other parameters like current, inductance etc? Answered

I am looking for NM 23, 425 oz-in stepper. I found two in eBay for the same price one from wantai and another from OSM, with different current, inductance, resistance and weight. I need guidance to select.

Question by saaddition    |  last reply


UPDATE: CDROM stepper motor moves up and down now! wiggle problem resolved

To anyone who read my previous post about the CDROM stepper motor wiggling and not moving while being controlled by GRBL and the EasyDriver motor controller, I got that same motor to work. What I did was I completely took off the wiring system of jumpers I had made. I took off the male pins and kept only that. Then, I tinned four new 22 AWG stranded wire (which is a larger gauge than I was using previously), attached the male pins to one end, and soldered the other ends to the motor directly using copious amounts of flux and verifying resistance continuity between all wires and connections. My Take Away: A. The previous gauge wire was too small, B. My splicing of the wire failed miserably, C. The solder pins were in fact touching each other, shorting the system I am guessing that a combo of all three (honestly, mainly B) caused the frustration. Now it is one solid wire from motor to breadboard for each of the four connections. I believe by unsoldering everything and cleaning it up fixed the wiggle jiggle of the CDrom motor. So if you are having these problems with your CDrom motor/ motor controller, check the wiring and the solder joints. I hope this helps anyone having these problems.          

Topic by dankozi713  


where in U/K. best place to buy STEPPER/LEAD SCREW mtrs ?

Hi ppl,I have to now make my woodworking mill cnc.because I have developed arthritis and the mill I have, X.Y.Z. is hand wound on the lead screw,I'm beginning to find it too much pain so I'm trying to figure a mount and fittings to take motors to do the donkey work.I need to know where on line I can buy motors to help me,I have been looking at a lot of the DYU. setups and have a few ideas to help me mount and join the motors to shafts,also if anybody knows a good place to buy lead screws I would be most grateful thanks for looking hope you can help.MAC.

Question by MACSWAG    |  last reply


The circuit using mc3479 is getting short when i connect the terminal of the coil to my circuit but motor still runs.

The circuit continually gets short circuited the minute I connect the stepper motor terminals to my driving circuit which incorporates a MC3479 chip. The motor however runs smoothly, however my power supply keeps indicating a short circuit preventing me from adequately controlling the stepper motor.

Question by rosemol    |  last reply


i need help making a cnc hot foam cutter out of scanner motors

Can anyone give me some instructions on a easy cnc hot foam cutter out of old hp scanjet and mustek flatbed scanners, also in the process of getting old copier machines. can I use the controllers on the scanners to run the motors, or am i better off just buying the motors and controllers. any suggestions would be greatly appreciated I am very new to this stuff tia mike

Topic by mgriff    |  last reply


Uni-polor Stepper Motors

OK so now I have some Unipolor stepper motors for sell. 20 bucks plus shipping takes all 3. Thanks for looking.

Topic by r1dd1ck913    |  last reply