A kind of motor that moves in steps.

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0
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2answers
66 views

Why does stepper motor not turn properly at different frequencies?

I have an 8 wire stepper motor and an unipolar motor driver. I wired the motor as unipolar connection. On motor 3.15V and 4.2A is written. My connection is above. When I connect V to 24V 14A source ...
6
votes
2answers
305 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 ...
3
votes
2answers
62 views

Driving a stepper motor to a set force

I am trying to drive a Linear Actuator (stepper motor with a lead screw) to drive until a force of 15 pounds is reached then stop. I am having trouble finding a good method to do this (I am new to ...
-1
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1answer
102 views
0
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0answers
13 views

Bipolar stepper motor sequence, wiring and dual h bridge

Im facing some issues to figure out sequence of my bipolar(specifically) and unipolar stepper motor. However , I've managed to get Dual H Bridge but couldn't find out the example/documentation for the ...
3
votes
1answer
264 views

Why is my DCDC getting fried when driving a stepper motor

I'm trying to get a stepper motor running using an L6470 stepper driver. L6470 is connected according to the recommended design. The motor is a NEMA23, rated 2A, inductance of 5.2mH and resistance of ...
0
votes
1answer
34 views

Per coil vs. per phase current

I'm working on a project using this stepper motor it is rated at 1.5 A/Phase current. Initially I planed of using this driver, so I checked if it can provide enough current for the motor. The website ...
1
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1answer
35 views

“Standard orientation” for stepper motors in data sheets

I just finished getting a SOYO 6V@0.8A unipolar stepper motor working, and wanted to know more about an issue I faced while doing so. I used the stepping sequence below with an L293D chip to drive ...
1
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1answer
70 views

Precision 0.5 degree Stepper needed for Turntable

Basically our project brief is to design a turn table, an object weighing around 10kg which will be placed off centre (but allowing around 20kg in case) to rotate in 0.5 degree increments, pausing for ...
4
votes
2answers
79 views

Is it possible to determine load on a stepper motor when stopped

Is there a way that the torque on a stepper motor can be determined without some kind of additional force sensor. Additional electronics such as current shunts etc would be acceptable. I would like ...
0
votes
2answers
109 views

How to tell when the stepper motor is done stepping?

I am working on a project that requires mildly accurate positioning of the x and y axis. It involves an airsoft gun and it is basically a motion tracking turret. Because of the requirements for ...
0
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0answers
44 views

Stepper motor with integrated circuits and encoder controlled by custom software

I am new to electronics but I have decent experience in programming. What I would like to do is have 2 stepper motors attached to my computer, and then develop a program that would control their ...
1
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0answers
63 views

Stepper motor to replace brushed DC motor to be used to start a gas engine?

I'm trying to decide if it would be possible to use a stepper motor to replace a current 12V DC brushed motor that is used to turn over a small (~149cc) gas engine for starting. The reason why is, I ...
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votes
1answer
104 views

Bipolar stepper motor (Alfa Romeo 156 speedo) w/ L293D

I would like to use my Alfa Romeo speedo in my simrig, I have got the cluster pinout and the speed signal is coming from the ABS (Just like any other car, my BMW cluster works like charm). The only ...
1
vote
1answer
54 views

Current on Easydriver stepper pin

I am using an Easydriver v4 to drive a bipolar stepper motor. The Easydriver works fine, if I wire it up and manually toggle the step pin to 5V/GND it steps as intended. Now I connected both the step ...
0
votes
1answer
211 views

Wiring up a 4 pin DVD drive stepper motor?

I have removed a stepper motor from a DVD drive which looks like the following: http://forums.parallax.com/attachment.php?attachmentid=102789&d=1373845076 As seen, there are 4 pins in a ...
5
votes
5answers
292 views

Can a motor's movement be improved to any arbitrary resolution?

For a project that I'm working on, I need motor rotation at extremely small increments -- my desired resolution is about ~0.15 degrees per minimum rotation step. Of course, most motors of reasonably ...
0
votes
1answer
72 views

Stepper motor driver differences?

I have recently used a H bridge to control a small stepper motor obtained from a DVD drive and now want to look into controlling something larger, for example large Nema 23 steppers. From reading ...
-1
votes
1answer
69 views

External power supply necessary to run two stepper motors from a RPi?

I am following this tutorial for a CNC laser engraver. I have two stepper motors from some old DVD drives and two L9110S H-bridges to control them. I am now working on putting it all together and ran ...
0
votes
2answers
272 views

How to determine bipolar stepper motor wiring (came from a 3.5 inch floppy drive)?

I have extracted a small stepper motor from a 3.5 inch floppy drive, that I intend to use with an Arduino or Raspberry Pi. The problem is: initially a thin ribbon cable was attached to it, with no ...
0
votes
1answer
131 views

Stepper motor is heating up?

I am using stepper motor for my CNC machine. Its model number is EM284 STP-42D221-01 by Shinani Kenshi. I don't know any specs of this motor; neither voltage rating nor current rating. I don't even ...
0
votes
2answers
114 views

PWM control of air core motor

I am driving an air core motor using PWM control from a microprocessor. The position of the air core is dictated by the combined magnetic field created by applying 2 currents to 2 coils (sine coil ...
1
vote
2answers
83 views

Power Conducting Stepper Motor?

I have a question that I'm not really sure how to ask, so here goes: So I know there's such a thing as a power conducting slip ring motor, which I assume allows the passthrough of power through the ...
0
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0answers
32 views

What is an 8-phase-stepper?

In an old device I am currently working with we found out that the engine is an 8-phase-stepper engine. Until then I only knew 4-phase-stepper and 2-phase-stepper. So, what is an 8-phase-stepper? And ...
0
votes
1answer
39 views

Drive Stepper Motor using parallel Port

im having a little difficulty to drive this kind of motors using parallel port..have googled loads tutorials but unfortunately couldnt found any color codes or types of motors i have..i cannot even ...
-1
votes
1answer
79 views

Where can I find used servo/stepper motors? [closed]

For practicing purposes (Arduino and other controllers), from what old equipements can i recover (recycle) small servo/stepper motors? Maybe old printers...?
0
votes
1answer
91 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 ...
1
vote
2answers
584 views

Slow down stepper motor's speed using stepper driver DRV 8825

I've got a Nema 17, rated at 0.8Amps, stepping angle of 1.8 degrees. The motor looks like this, and has six wires coming out of it: The four wires I've used are the ones labeled below (I was ...
0
votes
1answer
167 views

Can I control multiple stepper motor drivers from one controller?

I need to drive 6 stepper motors in open loop with 1/4 microstepping. The application requires all 6 motors to move by the same number of steps at the same time. There are no sensors of any kind on ...
1
vote
1answer
40 views

Limit the coil's voltage of the stepper motor

When the step motors are used with a current-controlled driver, also known as a chopper drive. The driver will increase output voltage when the motor runs much faster, because the faster the motor ...
0
votes
2answers
131 views

How to eliminate the wrong direction torque of stepper motor

I want to eliminate the wrong direction torque of stepper motor during super fast decelerating. The wrong direction torque is that: When you suddenly decelerate the input pulses of stepper motor's ...
0
votes
2answers
186 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 ...
0
votes
1answer
238 views

Running a low voltage stepper motor with a A4988 and 5V power suply

I got this little car I built using two of these motors and A4988 drivers. It was running with a 12V power supply, but I'm trying to get it on a battery and running for about 8 hours. thought I could ...
1
vote
2answers
180 views

How to suddenly stop stepper motor without vibration?

I first send continuous pulses to the stepper driver to make the motor run at high speed(fixed speed), then I stop sending pulses, I know the motor will stop quickly, but will it cause great ...
4
votes
1answer
88 views

Driving 259mA stepper motor with a 2N4401

A while ago I asked a question about driving a stepper motor using a 2N5550 and was advised that it wasn't really capable/a good idea. I received a good answer but would like a bit more information ...
1
vote
1answer
91 views

How to put these together and do I need a PWM expander?

I'm having here an Atmega8 a PSM42BYGHW603 stepper motor the L298 stepper motor driver ...
0
votes
1answer
95 views

What servo-motor (torque, power) is you think needed to rotate shower faucet? [closed]

Also how do you think you could create electronically controlled faucet? I know that there exists magnetic valves, but they consume power all the time they operate, whereas I want a solution that ...
3
votes
1answer
87 views

Speed and Position Control for high-volt Elektro Motor with AVR

Is there anything that one can purchase to control speed and position of a high voltage electro motor? I am quite a bit of a noob at this but I could think of a circuit using photo-sensors or ...
-1
votes
1answer
343 views

How to Control a 3D Printer Extruder [closed]

I am trying to control a 3D Printer Extruder that I got online. I know that for the most part, a person would just plug this in to a circuit board and it would just work. I want to make my own circuit ...
-1
votes
1answer
35 views

Bipolar Stepper Motor Voltage Problem [duplicate]

This is My Circuit: When I Connected Motor X1 and X2 Voltage accross X1 and X2 10mV. When I Connected to X1 and X2 a serial 7K res, Voltage over Resistor 150 mV.(Motor Not Connected) When I ...
1
vote
2answers
317 views

Controlling a Stepper-Motor with 2 H-bridges

I think that I may have come up with a possible way to control a bipolar stepper motor using 2 simple H-bridges. The idea is to control the direction and the steps of the motor by switching the ...
0
votes
1answer
105 views

A4988 and battery power

I have battery power (9v) for stepper motor (auto-tracker for telescope mount). I need micro stepping and high torque (0.1 N*m). I decided to use bipolar stepper and A4988 because there are cheap ...
1
vote
3answers
164 views

1 degree stepper motor

I would like to ask for some help regarding a stepper motor I would like to use. I need 1 deg step and as I have seen there is no such stepper. Could you advise me as an amateur the way i could bring ...
1
vote
2answers
154 views

Trouble with L297 pins

So I am having trouble with a circuit I am building for a stepper motor controller, I am currently following this schematic My problem is that I don't really know what the Vref, control, sync and ...
0
votes
1answer
85 views

Wiring and grounding stepper motors

I'm following up on an earlier question I asked concerning a stepper motor failing on a custom made "H" type plotter (Stepper motor failing. Electrical interference?). I now have 18 AWG shielded cable ...
0
votes
1answer
70 views

Difference between half stepping and full stepping

I am currently making a stepper motor controller based on this schematic however I was wondering about the difference between half and full stepping and what would be the best method for a stepper ...
1
vote
2answers
214 views

Peak current limiting motor

I've got a motor driver which can take 3A. But my motor seems to draw more than 3A as peak current when it's been turned on. And I would like to get rid of that since it blew up my motor driver a few ...
1
vote
1answer
128 views

12V to 1.75V Stepper Motor Power Supply

I am in the planning stages of building a motorized altazimuth telescope/antenna mount. I will be using two large stepper motors that operate at 1.75 Volts / 12.7 Amps. I would like to make the mount ...
0
votes
2answers
186 views

Can a Raspberry Pi control a servo motor? [closed]

Can a Raspberry Pi (RPi) board can control a 10Amp servo motor ? I read on the Internet that a RPi could control small servo motors. If so, is there an add-on board that, when connected to the Pi, ...
0
votes
1answer
135 views

Stepper Driver/Motor Voltage with Regulated Power Supply (Arduino)

Let me first say I am VERY new to electronics, so I apologize ahead of time (I'm very active on StackOverflow.com, so I understand). I have the following components I'm attempting to control with an ...