A kind of motor that moves in steps.

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0answers
66 views

Light Seeker . . . . . . . . . . . . . . [on hold]

i need help with the following project: For the second project you are going to make a Light Seeker. This will work by attaching an LDR to the stepper motor. The system must be started by the push of ...
-1
votes
1answer
57 views

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

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
53 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
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2answers
63 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
67 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
38 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
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2answers
58 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
103 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
120 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
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2answers
122 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
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1answer
57 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
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1answer
50 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
65 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
43 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
127 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
29 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
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2answers
150 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
72 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
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3answers
127 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
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2answers
95 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
55 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
55 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
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2answers
174 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
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1answer
105 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
140 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
75 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
votes
1answer
59 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
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2answers
138 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
votes
1answer
43 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?
1
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3answers
83 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
477 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
168 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 ...
0
votes
3answers
221 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: ...
1
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1answer
70 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 ...
1
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2answers
110 views

Stepper motor stalls at low frequencies. Why?

I picked up a Howard Industries 1-19-4200 (5 wire) stepper and have been driving it on my testbench with a PIC18F2550 and L293D. I recently added a potentiometer to an analog pin of the PIC for speed ...
1
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1answer
61 views

Supply voltage of stepper motors

I'm going to use the following stepper motor drive chip: http://www.st.com/web/en/resource/technical/document/datasheet/CD00255075.pdf And I have choosen the following AC/DC converter: ...
0
votes
2answers
106 views

L293D Problem- cant run both motors together

I am making rf based metal detecting robo and i had used 8051 for controlling the operation. The rf is fine and programming is also i think okay as i am getting desired outputs at 8051 output pins and ...
3
votes
4answers
191 views

Dialing a miniaturized stargate

I want to build a miniaturized Stargate but I have no clue regarding the electronic part. The Stargate is a fixed circle with 9 chevrons (see links bellow). An inner circle is spinning inside the ...
2
votes
2answers
153 views

Stepper current measurement puzzle

The basic puzzle: how to conveniently view stepper motor current on a scope? Edit 2014-04-14: More-sophisticated schematic and description. I am building a test fixture to examine the behavior and ...
0
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2answers
311 views

Stepper motor causing Arduino brownout?

I'm trying to build what amounts to a single-axis CNC machine running off a 12v automotive type electrical system. Here's a basic description of the build: Arduino Uno Just for testing, I'm using a ...
1
vote
1answer
376 views

Getting 9V and 400-500mA out of a 24V power supply

I recently bought this power supply to power a microstepping stepper motor controller (which requires an input voltage of 24V). My project requires the ability to dynamically turn on and off an ...
1
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1answer
66 views

Stepper motor drive supply voltage

I am going to use the SM42HT47-1684A stepper motor, its datasheet is following: http://p.globalsources.com/IMAGES/PDT/SPEC/001/K1052328001.pdf In the datasheet the rated voltage of the motor is 2.8 ...
0
votes
1answer
122 views

Two L298N for two stepper motors

I have two stepper motors (ripped from old scanners) and two L298N ICs. I have to connect these motors to the STM32 MCU, and I'm going to use this scheme: I want to make one board for two motors ...
0
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4answers
147 views

sn75441 output supply current - heating

I am experiencing excessive heating problem with SN75441one. I know that I can use heat sink but I want to be sure that I am not doing sth wrong. I am using SN75441one to drive a bipolar stepper ...
0
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1answer
70 views

How does the resolution of a stepper motor affect its performance?

I'm looking at purchasing some stepper motors for a project of mine. I found two which seem to be the same, except one has a 1.8 degree step and the other has a 0.9 degree step. Now the application ...
2
votes
1answer
116 views

How do I manipulate a large number of moving platforms?

I might not be in the best place to ask this and feel free to tell me to move my question to another Stack Exchange. I am trying to build a device that will allow me to control at least a couple ...
0
votes
0answers
51 views

Problem with microstepping mode and A4988POW

I'm trying to use the A4988POW stepper driver in 1/16 micro stepping mode to drive a stepper motor with low stepping frequency (~ 10 steps/s) for tacking an astronomical telescope. However in this ...
3
votes
1answer
241 views

Stepper motor resolution

What does "mm/step" exactly mean? Where and how is the distance measured? How can it be converted to °/step? I have been looking for this, but I haven't found the exact answer. Here is an example ...
0
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2answers
108 views

stepper motor driver amp

I want to add a few amps to the output of a stepper motor driver (bipolar 4 wire) with out modifying the interns of the driver. MY QUESTION IS BEFORE I START I WANT TO ASK IF THERE IS A PROBLEM WITH ...
0
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1answer
139 views

Unipolar stepper motor and a MCU

I have been trying to steer unipolar stepper motor (5V, 0.7A) using microcontroller powered only by USB (5V or smthing like that). The motor clicking got louder but the motor doesn't move yet. I ...