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Questions tagged [stepper-driver]

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1
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1answer
19 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 ...
1
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0answers
9 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 ...
0
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1answer
62 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 ...
0
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1answer
41 views

lb1847 stepper controller :how to connect to grbl atmega based board with step ,direction,enable , limit? [closed]

i like to use lb1847 chip with stepper motor "both salvaged from old copier" i made grbl atmega board , this board gives step ,direction,enable and limit leads so i tried to find corresponding pins on ...
0
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2answers
88 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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0answers
35 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 ...
1
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0answers
52 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 ...
1
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2answers
316 views

Stepper motor control

I am trying to understand the stepper motor to Mach3 type software control interfaces, mostly from a logical perspective, deducing most of everything because I have no concrete resource to refer. So ...
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2answers
635 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 ...
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6answers
791 views

CNC: Linear motion without timing belt or lead screw

Is it possible to build a CNC whose Linear motion system does not contain any timing belt(pulley) or lead screw(threaded rod). I was wondering whether I could directly control the Linear motion by ...
4
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2answers
660 views

Software to control an Arduino setup with a timing belt and stepper motors

I would like to know what software is available to control a timing belt with stepper motors for arduino board.Much like how its done in 3d printing. But in this case i wont be making a 3d printer....
1
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3answers
294 views

How can I increase the resolution of a PWM signal?

Say I have a motor and I want it to spin at exactly 2042.8878 revolutions per minute. Say I have a very precise sensor to detect the RPM of the motor to a resolution of 1/1000th of a revolution per ...
0
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1answer
202 views

Can I use Bipolar stepper motor driver to drive Unipolar motor in Unipolar configuration?

Can I use Bipolar stepper motor driver to drive Unipolar motor in Unipolar configuration ?
1
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2answers
609 views

Can't Read current on Pololu Dual MC33926 Motor Driver Shield for Arduino

I purchased a Pololu Dual MC33926 Motor Driver Shield for Arduino, and for some reason I cannot read current from the motor controller. On the Serial.println() it just prints weird data (garbage), and ...
2
votes
1answer
153 views

Current-limiting stepper motors for RepRap

I have been working on a robot project for a while. Now I am tired of finding parts that just does the job, so it is time to do create parts. A 3D printer will do the trick for many parts, but 3D ...
3
votes
1answer
2k views

Why does microstepping give less torque?

I am experimenting with using a stepper motor for a robotics project. I'd like to use microstepping to give a better resolution and smoother movement, but I have noticed that the finer the microsteps, ...
1
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2answers
498 views

Suggestions for stepper motor controllers [closed]

I am working on a project where a dslr camera will be rotated on a tripod on 2 axes. I'm definitely using nema 17 motors as those are what I have. The motors will rotate 30 degrees every 5 seconds in ...
3
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1answer
6k views

Choosing correct power supply for Stepper Motors

I am building a machine and need 2 Stepper Motor for that. The motors are driven using by a 3.3v arm device. I have made the following selections regarding the stepper motor, stepper motor driver and ...
4
votes
1answer
3k views

Will wiring a unipolar stepper to a bipolar stepper driver decrease the holding torque?

I have read that you can wire a unipolar stepper to a bipolar driver, which I have, by ignoring the two extra wires. One concern I have is whether connecting a unipolar stepper to a bipolar driver ...
12
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5answers
20k views

How to detect when a stepper motor has stalled?

How can I detect when a stepper motor has stalled? A google search led me to some people who say that when the stepper motor stalls, the current spikes up, which is easily detectable with a Hall ...
7
votes
1answer
1k views

Using an Arduino to control an ON / OFF connection between two pins

I've got this driver: http://www.pololu.com/catalog/product/1182 ... a A4988 stepper motor driver carrier I'm attempting to control a connection between the RESET and SLEEP pins with logic ( code ) ...