A kind of motor that moves in steps.

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1answer
54 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 ...
3
votes
1answer
37 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
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2answers
104 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 ...
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0answers
39 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 ...
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0answers
56 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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1answer
79 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 ...
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1answer
46 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 ...
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1answer
121 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 ...
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5answers
285 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
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1answer
56 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 ...
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1answer
59 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 ...
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2answers
162 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 ...
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1answer
110 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 ...
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2answers
91 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 ...
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2answers
79 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 ...
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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 ...
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1answer
28 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 ...
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1answer
75 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
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1answer
84 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 ...
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2answers
387 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
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1answer
132 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
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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 ...
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2answers
117 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 ...
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2answers
167 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
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1answer
198 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 ...
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2answers
170 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
80 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 ...
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1answer
79 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
88 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
70 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 ...
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votes
1answer
290 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 ...
0
votes
1answer
33 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 ...
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2answers
273 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
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1answer
95 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 ...
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3answers
147 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
126 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
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1answer
77 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 ...
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1answer
66 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 ...
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2answers
199 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 ...
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1answer
127 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
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2answers
174 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
126 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 ...
0
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1answer
68 views

Stepper Control using DC Brushed Motor Driver

Is there any way to control a bipolar stepper motor using one or more DC brushed motor drivers? My only interface to the motors is setting an integer to represent their speed, ex -100 to 100. I ...
0
votes
2answers
218 views

Stepper motor failing. Electrical interference?

Update: This question is already so long, I'm hesitant to add to it but it occurs to me to ask if electrical interference between the stepper motor wires could cause this sort of behavior (motor ...
0
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1answer
45 views

Stepper motor limiting current [duplicate]

What is the limiting current for a stepper motor having a resistance per winding of 20.5Ω, an inductance winding of 45mH and an operating voltage of 12V?
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3answers
91 views

Is my stepper too small?

I'm building a machine that uses a single stepper motor connected to a gearbox. I'm running it at full steps and I seem to only be able to reach 1000 steps per second with a 200 step/rev motor. Much ...
2
votes
2answers
679 views

Why use stepper/DC motor driver?

Why use or implement a DC/stepper motor controller? Is it not possible to connect the motor directly to an MCU output pin without the driver?
2
votes
0answers
290 views

Driving multiple stepper motors

During the last days I've been working on driving multiple stepper motors (28BYJ-48 – 5V) with SparkCore and Stepper.h arduino library. I'm trying to drive some stepper motors, but without having to ...
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3answers
371 views

Understanding the relationship of Pulse and Stepper RPM

I have a pretty simple script that I'm using to control the RPM of my stepper motor: ...
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1answer
77 views

Need specifications to operate this stepper motor with RPi or Arduino

Here is the disassembled stepper motor that I'm working with: I need to identify this stepper motor that was retrieved from scrap for a project. Budget constraints force us to use the scrap ...