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Questions tagged [stepper-motor]

A kind of motor that moves in steps.

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10 votes
4 answers
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Bi-Directional Step up and Step down (3.3v <-> 5, etc)

So I've been reading a few threads here and on other forums. I understand there are various solutions for stepping down or up a voltage. What I have found are the LVC series shift regs that give a ...
cyphunk's user avatar
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2 votes
2 answers
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What could be the reasons for a stepper motor stuttering with an A4988 driver?

I am using an A4988 Stepper Motor Driver, which is controlled with an STM32F767ZI on a Nucleo 144 board. The stepper motor takes 12 V with a maximum of 350 mA. When powered, the motor simply flickers ...
Starman's user avatar
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41 votes
2 answers
91k views

Difference between Brushless Motor and Stepper Motor

I think I understand the operating principles of a brushless motor and a stepper motor, but I'm a little confused about the difference. Is a brushless DC motor a very basic stepper motor? With ...
mrsoltys's user avatar
  • 513
1 vote
2 answers
2k views

Driving step motors using microstep drivers with teensy 4

I am trying to drive two stepper motors NEMA23 with two DM542 microstep driver (one for each) and a Teensy 4.1 as controller: http://tinel.com/uploads/DM542.pdf Please find datasheet of DM542 here: ...
Armand's user avatar
  • 21
0 votes
1 answer
754 views

Driving low voltage P-MOS N-MOS half bridge with dead time control, without bootstrap and one control line

I should need a driver of a PMOS NMOS bridge with dead control controlled by a one line from the microcontroller (because I have to use several PWM lines) that inserts a dead time control to avoid ...
mathengineer's user avatar
10 votes
6 answers
24k views

How do you minimize stepper motor vibration?

I'd like to run a stepper motor at a very smooth, constant speed, with minimal vibrations to both the mount holding it and its output. How do I drive the stepper motor so that speed remains constant, ...
Evan Krall's user avatar
10 votes
3 answers
12k views

Why do we need a ramp for stepper motor?

I am a newbie and trying to understand how i can run a stepper motor. The concept i had in mind was that steppers need digital pulses to run, and i tried it out too. I was able to run the stepper i am ...
alexhilton's user avatar
8 votes
6 answers
23k views

Smallest stepper motor (that one could buy)

I'm looking into embedding a stepper motor into a wearable device like a wrist watch. I've found these on digikey: http://www.nmbtc.com/pdf/motors/standard-pg/PG15S-D20-HHB9.pdf The resolution is ...
Padu Merloti's user avatar
7 votes
2 answers
41k views

Understanding how much power a stepper motor draws

I had a previous question describing a power management system where I was trying to power 7 stepper motors from a wall outlet (with switching power supplies and motor drivers). I realized during this ...
JDS's user avatar
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5 votes
2 answers
11k views

L298 output voltage is too low

I'm trying to use an L298N and an Arduino UNO R3 to drive a bipolar stepper motor. To simplify things, I'm just trying to get a 12v output from either output-1 or output-2 of the l298 (then I can ...
Matt's user avatar
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5 votes
3 answers
4k views

When driving stepper motors do I need to worry about back EMF?

When I've driven coils in the past (such as mechanical relays) I've had to put a diode to protect it against back EMF once turned off. Does that need to be done when driving stepper motors with a ...
Dean's user avatar
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5 votes
1 answer
1k views

Is it possible to run a stepper motor only with a L293D at reduced current?

I would like to drive my stepper motor (1.4A rated current, 3.5V, 2,5 Ohm coil resistance). I only own some L293D drivers but I think I will burn it if I just wire the motor to the driver without some ...
angaran's user avatar
  • 163
2 votes
1 answer
206 views

Is half stepping possible by powering the two consecutive coils?

I have some stepper motors with a step angle of 1.8 degrees and I am wondering if it is possible that powering the coils next to each would it get the spindle to go to midpoint between the two coils? ...
Dean's user avatar
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1 vote
1 answer
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Simple stepper motor circuit safe?

After various disappointments i finally understood how to find those damn wires on stepper motors. I tought it was simpler to drive bipolar motors but at the end i prefer unipolar stepper motors.. ...
cocco's user avatar
  • 547
0 votes
1 answer
378 views

Basic circuit voltage question - Using a driver to control a stepper motor

I'm pretty new to electronics. I'm using an Adafruit ESP8266 microcontroller connected to a L293D motor driver to power a bipolar stepper motor. I'm struggling to understand the various voltage levels ...
Yogi12's user avatar
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0 votes
2 answers
10k views

Using hard disk motor as generator

I have disassembled 20 broken hard disks and taken out the motors, thinking they might be useful. However, they didn't work using DC current, because they required some kind of control circuit. Now I ...
sadljkfhalskdjfh's user avatar
11 votes
3 answers
5k views

Arduino Stepper Motor

How do use use an Arduino with a Stepper Motor?
littlebirdceo's user avatar
9 votes
2 answers
24k views

smooth a motor movement

i have a stepper motor (controlled by an arduino) that moves some gears and a pulley. the problem is that the pulley jerks a lot: the movement begin and stop too much suddenly. to make the movement ...
nkint's user avatar
  • 1,003
9 votes
4 answers
10k views

How to achieve very accurate/fine rotation with motor

I am running an experiment where I need to rotate a lightweight dial (<5 grams, so very low torque requirement, and fairly slowly), but need to do very accurate, fine steps of 0.03 degrees. ...
boardbite's user avatar
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8 votes
2 answers
4k views

Unipolar and Bipolar Stepper motors

I would like to universal stepper motor driver circuit. Is it possible for one circuit to be able to drive unipolar and bipolar motors with only a firmware change or do they require much different ...
PICyourBrain's user avatar
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8 votes
2 answers
18k views

How to find out whether I have a unipolar or a bipolar stepper motor?

I have one stepper motor. There are six wires coming out of that. How can I find out weather I have a bipolar or a unipolar stepper motor? Note: Related, but not a duplicate: Unipolar and Bipolar ...
vijay's user avatar
  • 287
7 votes
3 answers
4k views

How to calculate and measure motor constant for stepper motor?

I am working on a project using ST4118D30004 stepper motors and powerSTEP01 drivers. The ST4118D30004 is a bipolar stepper motor with 4 wire connection. While researching how to find the optimal ...
RHawkeyed's user avatar
  • 171
7 votes
1 answer
2k views

Basic transistor wiring

I'm trying to control a stepper motor using transistors to switch the different phases (am I using the correct terminology?) on and off at the correct times. I'm going to use my Raspberry Pi to do ...
OdinX's user avatar
  • 831
7 votes
6 answers
17k views

Stepper motors - stride angle?

I am interested in using one of these cheap stepper motors for one of my projects, but need a step angle of ~2°. I came across the 28BYJ-48 and noticed that it has a "stride angle" of 5.625°/64. What ...
capcom's user avatar
  • 5,912
6 votes
4 answers
23k views

How to interpret the stepper motor voltage requirement?

I have a 8HS11-0204S stepper motor and need to match a driver to it. HERE it says that the recommended voltage for driving it is 12-24V. But if you open the (feeble) DATASHEET, it says that the rated ...
I have no idea what I'm doing's user avatar
6 votes
2 answers
4k views

How do you read newer HDD motors (DC/Brushless) into arduino? (like stepper motors)

We had a version of the HDDJ working with an arduino reading an old stepper motor (with 4 wires), then sending serial data to processing, using a midi library, and midiox + midiyoke. Having trouble ...
Allan's user avatar
  • 406
5 votes
2 answers
5k views

Underpowering a stepper motor

I have a stepper motor and it is rated at 2 amps per phase. I also have a stepper driver which is rated at 750 miliamps per phase. To make matters worse I have a wall wart power supply rated as 9V @ ...
user avatar
5 votes
3 answers
4k views

How these laser show systems work

I am trying to understand how laser show galvanometer systems like this one create high-resolution movement, and generate drawings of reasonable precision (w.r.t. minimum beam angular-deflection step ...
sasha's user avatar
  • 553
4 votes
4 answers
5k views

What is a "fast 2A type" diode?

Looking at the L297 datasheet, it references the use of "fast 2A type diodes". What does that mean? Would a 1N4001 qualify? Given the application, I'm assuming that it needs to be a higher power ...
mmccoo's user avatar
  • 951
4 votes
2 answers
11k views

Maximum speed of stepper motor

I would like to compute maximum speed (RPM) of my bipolar stepper motor 42BYGHM809 -- rated voltage 2.7 V, rated current 1.78 A, phase resistance 1.6Ohm, phase inductance 2.5 mH. I know how to ...
vasco's user avatar
  • 957
4 votes
1 answer
393 views

Computer Controlled Large Slow Stepper Motor

Can someone smarter than me help me out? I do 3D 360 degree pictorial (http://imagesolutions2.deviantart.com/art/Baltimore-Greet-Meet-March-Black-Rock-Shooter-289812655 but it requires flash) of human ...
Eric's user avatar
  • 41
4 votes
3 answers
9k views

How to determine proper stepper polarity?

In one of the answers to this question, it is stated that wiring one of the coils on a bipolar stepper backwards can cause the motor to step improperly, or not at all. I've salvaged several steppers ...
Mark's user avatar
  • 4,760
4 votes
1 answer
445 views

Power supply issues with many identical PCBs

I've designed a PCB to run two stepper motors from an Atmega8. With my current implementation, I can however only run two of these PCBs at the same time. In this picture you can see the overall ...
dhst's user avatar
  • 163
4 votes
2 answers
1k views

How is this extremely high-resolution stepping achieved?

This question pertains to this video as well as this one by the same person demonstrating his results with a stepper motor (along with a really neat testing method involving a laser spot on a wall a ...
sasha's user avatar
  • 553
3 votes
4 answers
22k views

Can I drive a low voltage stepper motor with an A4988 driver?

I have this stepper motor with the following specs: Model: 17HS4417 Rated voltage: 2.55V Rated current: 1.7A Phase resistance: 1.5 ohms Phase inductance: 2.8Mh Holding torque (min): 40N-cm. Detent ...
Paul's user avatar
  • 787
3 votes
2 answers
3k views

Low cost high precision linear position sensor [closed]

I am trying to find a low cost high accuracy linear position sensor that can be used in a hobby 3D printer. Almost all current 3D printer designs rely on stepper motors to provide positioning but I ...
Gerharddc's user avatar
  • 285
3 votes
2 answers
5k views

Stepper motor phase

I have a question related to stepper motors. What does the "phase" of a stepper motor mean? I mean when we say that a stepper motor is a 2 phase stepper motor or a 4 phase stepper motor, what does it ...
Buzai Andras's user avatar
3 votes
3 answers
4k views

Backdriven stepper motor "powering" rest of the board

I have a stepper motor powered by a breakout board that uses the A4983 stepper motor driver (http://www.sparkfun.com/products/10735). Sometimes when the power is disconnected and the drive wheels are ...
Faken's user avatar
  • 1,698
3 votes
1 answer
9k views

Recommend motor type to turn baby rocker, into auto-rocker

Would like to convert a baby bouncer (like this one), which requires continuous manual effort to rock it, into one that use electro-mechanical means to auto-bounce. However, my aim is to make these on ...
bdutta74's user avatar
  • 3,534
3 votes
2 answers
917 views

BiPolar Stepper Motor Polarity

In my understanding, the polarity of the magnetic field of a bipolar stepper motor does not matter. You can hook it up to the biploar driver either way and it would still work correctly. However, is ...
user avatar
3 votes
1 answer
3k views

Adding diodes to easy driver stepper motor driver

I had an easy motor driver damaged by removing the motor while the drive was energized. I sent an email to Brian Shmalz to see if there was anything that could be done to protect the board in these ...
asawyer's user avatar
  • 227
3 votes
4 answers
307 views

Detect stepper motor rotation without access to shaft / rotating parts

The problem is the following: For an existing application I need to develop an addon-board, and one of the functions it needs, is to detect if a stepper motor inside the machine is running. The ...
KarlKarlsom's user avatar
  • 1,812
2 votes
1 answer
222 views

Understanding stepper motor as generator Vs DC motor (RMS to equivalent DC)

I am using a stepper motor as a generator in a proof of concept experiment for something. The motor came from an old printer so do not have specs for it, but I believe it's unipolar. It has 5 wires, ...
KevInSol's user avatar
  • 129
2 votes
1 answer
14k views

Is it possible to control a DC motor with Microstepping driver?

Today I found that electronics dealer have shipped me a Microstepping controller (A4988 -module: http://www.robotshop.com/media/files/PDF/datasheet-1182.pdf -on-board chip: https://www.pololu.com/...
Burak.'s user avatar
  • 149
2 votes
2 answers
8k views

Can I use electrical braking with stepper motor?

Can stepper motor use electrical braking? I think I can stop a running stepper motor more quickly with an electrical braking resistor. Is this feature popular among stepper motor controllers? I am a ...
ron mao's user avatar
  • 31
2 votes
2 answers
681 views

How to estimate the settling time of the rotor of a stepper motor?

I'm trying to estimate how long I need my stepper's pulses to be to ensure I don't miss steps and assess how big the vibrations will be because of the ringing (i.e. how fast it can be, considering a ...
user42875's user avatar
  • 1,344
2 votes
3 answers
737 views

PCB design considerations for running 48 stepper motors

For a while now I'm working on a project where I want to control 48 stepper motors. A pair of two motors is controlled by an Atmega8. All modules are connected as slaves on an I2C/TWI-bus with an ...
dhst's user avatar
  • 163
2 votes
3 answers
790 views

large voltage spike over shunt resistor even at no load

I'm trying to build a stepper-motor driver. Each windig is driven as shown: at the moment, im feeding this with PWNM signals of constant duty cycle, just to see how everything response. (PWMs are ...
mmarugg's user avatar
  • 21
2 votes
1 answer
957 views

Can you use a stepper motor as input?

I'm not too versed in EE so I apologize for my duncitude - My thought is that you can precisely control a stepper motor, but can you inversely get precise readings out of a stepper motor? For ...
jmchargue's user avatar
1 vote
1 answer
320 views

Detect stepper motor movement using a Hall Effect sensor

Is it possible to detect that a stepper motor is rotating using a Hall sensor against its body? Kind of a simple detection mechanism for motor stall without moving parts. EDIT: I want to make sure the ...
Pedro NF's user avatar
  • 265