Questions tagged [stepper-motor]

A stepper motor (or step motor) is a brushless DC electric motor that divides a full rotation into a number of equal steps. The motor's position can then be commanded to move and hold at one of these steps without any feedback sensor (an open-loop controller), as long as the motor is carefully sized to the application. (Wikipedia, 2014)

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39 views

How to calculate Current for pancake stepper motor - To change in Pronterface

DISCLAIMER: New to electrical engineering topics. I'm a 3d-printing hobbyist. I don't know all the Jargon being used but trying my best to keep up. PROBLEM Recently bought a Nema 17 stepper pancake ...
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42 views

How to make a CNC machine from scratch?

I want to make my own CNC machine from scratch because it's cheaper to make than buy a premade one. I noticed that some machines go for tens of thousands of dollars and I cannot understand how they ...
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64 views

Simulator for NEMA17 (stepper motor) and A4988 (stepper motor driver) along with Arduino

I want to simulate an Arduino MEGA (or UNO) controlling a NEMA17 (stepper motor) using A4988 (stepper motor driver). I couldn't find the stepper motor and driver on TinkerCAD. Can this be done in ...
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33 views

Arduino turning off when using bipolar stepper motor (L298N Driver)

Sorry, this might be a bit lengthy, but I really need some help (I am aware that there is a question similar to mine that has already been asked here. However, I couldn't come up with a solution to my ...
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1answer
187 views

What is the difference between the holding torque and stall torque of a motor?

Do the terms holding torque and stall torque imply the same thing? The information on torque for these stepper motors is given as holding torque. While these servo motors have the torque given as ...
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15 views

Question on Replacement for NEMA34 Step Motor

I have access to an old CNC router that uses HY200 3424 stepper motors (NEMA 34, pdf). They are rated 4.7 A, 90 Volt and 150/193 Nm. I would like to run them with a CNC xPro, or similar. I would like ...
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54 views

Arduino and stepper motor

How arduino stepper library handles stepper motor with ULN2003? I mean, for controlling stepper motor one actually needs four pwms. It can be reduced to two by encoding, or maybe even to one by using ...
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27 views

Drive a lead screw with 24BYJ

I'm planning to drive a lead screw on a linear guide using a 24(28)BYJ. The load will be around 400g max and only low speed is needed. I hope the motor is powerful enough. However, I'm trying to drive ...
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38 views

Removing the motor from a 2.5" HDD for controls project

I have a project that requires an extremely high rotation rate motor, and I have a 2.5" HDD that I'd like to take the motor out of. I chose a 2.5" HDD for lightweighting reasons and for the drive ...
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121 views

28BYJ-48 Gear/Cog Attachment Guidance

working with hardware like arduino is completely new for me. i bought a arduino kit with "generic components"... and with it is have a stepper motor called "28byj-48" (https://images.app.goo.gl/...
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96 views

Stepper can't turn plastic wheel. Is it normal?

Is it normal, that a stepper motor with the following specifications can't reliably turn a plastic wheel with a diameter of 13cm and a simple direct coupling? Type: bipolar, two phases Voltage: 2.55V ...
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35 views

Sensing torque of stepper motor

I need to sense the torque of a stepper motor at any given time. I'm planning to tension a wire by using a stepper motor, and in order to keep the wire at a fixed tension I would need to know the ...
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550 views

Automatic forward and reverse Brushless Motor

The video Here shows a motor using rotational motion to move a load forward and then reverse back, without manually switching it to reverse. How can I program my brushless motor to operate like the ...
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394 views

Specification calculation for choosing a proper stepper motor for Ball Lead / Screw system

I'm trying to build a motorized stage which moves in one direction as below picture based on this article. Desired characteristic properties are: 1. screw length = 150 mm 2. screw diameter = 14mm ...
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30 views

Best way to turn large “lazy suzan” bearing with stepper motor [closed]

I'm designing an automated object capture turntable (take photos -> photogrammetry) where the platform the object sits need to rotate, driven by a stepper. The catch is the base is glass as I need to ...
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70 views

Why are brushless servos more common than steppers in Cobots?

Essentially every cobot I've worked with uses BLDCs instead of stepper motors in the joints. When searching for answers as to why I see a lot of posts that suggest one or the other, but nothing ...
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38 views

Buying DC motors with fitting gears

I want to try a little project with an arduino controlled crossbow turret. Therefore I need some motors to move the turret and gears. Since this is my first try on such a project I am very unsure on ...
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1answer
41 views

Stepper drive resolution

I'm asking for help on understanding stepper motor + gearbox solution, as I've got totally confused during my research on topic. Story: Trying to make a sort of precise turning table (at least 1°/...
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1answer
43 views

Driving a gearbox with another?

I'm trying to find a 1:1000 gearbox for NEMA 17, but the highest (affordable) one I've found is 1:100. Is it a good idea to drive a 1:100 planetary gearbox with a 1:10 planetary box? Is it common to ...
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1answer
50 views

Why my stepper motor doesn't move when I attach a blade?

I wanted to use the NEMA 17 stepper to drive a blade/flapper that I have custom made for some physical application.As soon as I tighten the screw,the motor stops rotation in the usual way. Don't have ...
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1answer
33 views

Encoder attached to output of gearbox of stepper motor

I'm building a SCARA robot controlled with stepper motors and want to use an encoder to close the loop. The main reason for this is I am using an experimental gearbox with nonlinearities and zero ...
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1answer
288 views

How to calculate power supply requirements for Closed Loop Stepper Motors?

I have a CNC Router table that has 4 Nema 23 stepper motor (open loop). I want to upgrade the machine and use 4 Neam 34 Closed Loop Steppers. These are the motors and drivers I'm considering: Steppers:...
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0answers
16 views

L298N briefly works, then shorts when controlling Nema 17

I'm trying to control a Nema 17 stepper motor with a L298N H-Bridge. My wiring is as below (except I'm using a ESP8266 not a YUN, and I have a mains 12V supply rather than batteries). This is ...
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2answers
721 views

What are the equations of a s-curve position path?

I have a decoupled mechatronic system with two motors. I want for each motor to give a s-curve path as reference. You can see in the image below the position path, velocity and acceleration. All ...
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1answer
169 views

How to tell if a stepper motor position is moved by external force?

I'm designing a round knob positioned by a stepper. The knob is intended move by an external force while positioned by the stepper. I'd like the stepper to release (power off) when the knob is ...
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2answers
402 views

Struggling to understand Jacobian Inverse Kinematics

I'm trying to find a method to control a moveo 5dof arm. My goal is to calculate the right angle to turn for each stepper motor to reach a desired point in real environment. I've spent time looking at ...
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1answer
491 views

CNC stepper motors are loud and slow after decreasing the steps/mm from 250 to 5

I'm making a drawing robot and have hooked up my steppers to each axis. I'm using the grbl shield with arduino and nema 17 steppers. Initially the firmware was set at 250 steps/mm but with my setup ...
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1answer
77 views

Tamiya Dual Gearbox attached to an Arduino Uno Board

I'm building a robot that uses the arduino uno microcontroller, and the tracks system is run by the tamiya 70168-Double-Gearbox-Kit. Each Tamiya motor only uses 3V which is fine but it seems the ...
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2answers
137 views

Controlling Stepper or DC motor with L298 or L293 and getting operation similar to Servo for 6 dof arm

I will be using 1:4 gear ratio and thus will require a motor with a continuous 360 motion and a high torque for efficient functioning. Servo motors with continuous rotation and high torque are very ...
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2answers
495 views

How to move a Stepper Motor to a desired angle with raspberry pi?

I will be using stepper motor in 6 DOF robotic arm along with Servo motors. Unlike Servo motor ,I find difficult to control Stepper motor. I was earlier using only Servo Motors but due to lack of ...
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1answer
2k views

Which motor to use for self-balancing-bot?

I am building a self balancing bot using MPU-6050 Arduino Mea 2560 100 rpm 12V DC motors Currently I have used two 100 rpm DC motors in the bot. The pwm signal is given to the bot on the basis of ...
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1answer
23 views

Motorised Stage for laser

The problem I want to be able to move the direction a laser is pointing. This means I need to have motorised rotation of the laser head in the x direction and in the y direction. I am unsure of the ...
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1answer
164 views

raspberry pi operating a unipolar stepper motor with a L293D IC

I need some help with a project where I am trying to operate a unipolar stepper motor with a raspberry pi's using the 4 GPIO pins and using a L293D IC as an amp to get it to the operating 12V of the ...
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0answers
56 views

Is missed step detection of a stepper motor done is software or hardware?

I remember seeing a video of the Prusa i3 Mk3 printer. It can detect when the stepper motor misses a step, so it can home itself again. I would like to know how this is done! There are a few options ...
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1answer
897 views

L298N driver takes too much current

I'm using L298N motor driver to spin stepper motor (42BYGHM809). When connecting it to batteries(2*9v), the batteries heats up after few minutes and stop working, and when connecting it to power ...
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2answers
632 views

How to reduce the small free rotation/movement of a stepper motor shaft?

I was successful in running a 28BYj-48 stepper motor with 4096 steps per revolution. I am happy with the result. But there is a free movement of the motor shaft itself - you can move the motor shaft ...
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2answers
838 views

DC geared Motor 20 NM 25 RPM small dimensions. [closed]

My application requires a DC geared motor with torque of 10 NM - 20 NM and low speed (25 RPM at most) and a small dimensions (120 mm length at most). I failed to find my specs at eBay, and Alibaba ...
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2answers
4k views

Using brushless motors for very high torque

I'm currently building an robotic arm and I want the elbow joint to be comparable to a human one But here's the problem, electric linear actuators are too slow and have low torque, same goes with ...
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0answers
196 views

Kinect V2 (Arm/Hand Reading) to G-Code

I am very new to this space and would greatly appreciate some clear guidance. I have a Raspberry Pi 3, Arduino Mega 2560+Shield, and Kinect v2 + PC USB cable adapter. I am currently building the ...
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0answers
573 views

How do I choose the stepper motor torque for my robotic arm

I'm a communication engineer so my knowledge about robotics is very little. I know the basic formula of torque T=mgL in my project I have 2 arms & 2 motors i used a torque calculator online ...
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2answers
4k views

How can I calculate speed and torque of stepper motor screw

I want to choose stepper motor screw with slider for use it to shift cube with side 5 cm and wight 250 g . I found this motor .. how can I calculate speed and torque of slider
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6k views

How to calculate my power supply voltage and current?

My stepper motor specifications: Phase = 2 step angle = 200 step/rev voltage = 12 V current = 0.33A/phase resistance = 34ohm/phase Inductance = 46omh/phase holding torque = 23N.cm min detent ...
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0answers
84 views

Design of an equatorial mount [closed]

I am considering designing an equatorial mount for astrophotography. I have been researching on the best way to do that and I am thinking on using a stepper motor with a gearbox. The thing is that it ...
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0answers
31 views

Stepper Motor Torque [duplicate]

Tried searching for this answer in a simple way but can't seem to find the answer.. I have a 3 axis Bipolar Nema 17(Took off my 1st 3d printer =) ) robotic arm(Homemade) and provides 28oz-57oz of ...
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0answers
21 views

Detecting “zero” when turning a potentiometer from a stepper motor [duplicate]

We're using a stepper motor to control a knob on a piece of audio equipment. The stepper is coupled to the potentiometer shaft with a simple coupler. Right now, in order to get to "zero" on the ...
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61 views

Stepper Motor For “Cable Car” System

I am a programmer with a lot of experience in IoT but somewhat new to actuators and robotics. I would like to create a "Cable Car" which consists of two stepper motors and a pulley. The motors would ...
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1answer
775 views

Servo coupler size needed

Hey all I would like to know what type of coupler I would need for this type of servo? The specs are: I'm guessing that the 25T means it has 25 teeth in the part that holds the adapters? So I would ...
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1answer
50 views

Will this have more or less lifting strength

Bit of an engineering question. If a snake robot is 100 cm long, and every 10 cm is another motor. Would the robot lift more weight, the longer/more motors attached to it.. or is lifting ability ...
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1answer
823 views

Why are some motor shafts stiff while others spin freely when not powered?

Most servos and steppers I've worked with are able to spin manually when no power is applied, but I've come across a couple which are stuck in their position. I'm not sure if they are just very ...
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2answers
1k views

What stepper motor driver to use?

I want to control a DVD drive's stepper motor with an arduino uno, but at the moment I'm not sure what kind of motor driver will work for that. I am currently looking at this one I have no idea ...