Questions tagged [stepper-driver]

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47 views

Stepper Motor wiring confusion

I have got a 6 wire stepper motor. It's a chinese one (OKI KFL42LL) with Black, Brown, Orange, Yellow, White and Grey wire on it. Its specs are 8.7ohm and 7.5 degrees/step. I went through a lot of ...
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1answer
73 views

Controlling multiple stepper motors using a single driver

I want to control ~50 stepper motors using a single driver, and use only one Arduino pin to control each motor. Currently I'm using a single A4988 driver and a couple of 12v 1amp stepper motors to ...
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2answers
59 views

Why one stepper motor is twice faster?

I am using some stepper motors and I realized they are much slower than the stepper motors of OpenBuilds (http://youtu.be/GrjqW2MDCvM?t=3744). They're using less teeth on pulley too. Power supply ...
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49 views

Why stepper motor is slow with A4988 driver?

I'm using NEMA17 17HS13-0404S1 stepper motors with Arduino CNC Shield & A4988 drivers but I think they're much slower than they should be. Hard to explain how slow they are but compared to Ender 3 ...
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25 views

Stepper motor and driver selection

I would appreciate some advice on selecting a proper stepper motor and driver for my project. I plan to create an autopilot for my small fishing boat using a Raspberry Pi controlling a stepper motor, ...
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2answers
74 views

L298N heating up when driving a Nema 17 with Arduino

I've just bought a Nema 17 (Motor NEMA 17 40mm 1,2A 2,6kg/cm 1,8º 42STH40 1204A CNC) to build a pet feeder, and to control it I'm using a L298N driver I've also bought. I've wired everything together ...
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1answer
29 views

Delay between steps, given speed in mm/min [stepper motor]

I'm building a device that have to move in orders of thousandths of mm per minute. I've got suitable stepper motor and driver, it is working correctly but I'm unable to figure out the formula needed ...
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108 views

Stepper motor vibrates, without turning

I'm trying to get a stepper motor to work, but having issues. I've done a lot of debugging, but still can't figure out what's wrong. When I try to turn it around, it just makes a buzzing sound, and ...
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1answer
40 views

Capacitor to discharge upon switch open

Update Please evaluate this third attempt: This is my first electrical project, so please be gentle with me. I know very little about electronics. I'm building a machine that has a crank that users ...
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0answers
49 views

Stepper motor, why so many wires (10)?

I recently bought a stepper motor secondhand and out of curiosity opened up the back cover to see how the wires were connected, currently it looks like 3 phases are connected (4 wires, 3 phase wires, ...
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1answer
68 views

UL certification requirements

I'm designing a circuit board for a large industrial product which is intended to be UL certified, so the boss wants as many individual submodules to be UL certified as possible, including mine. The ...
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1answer
66 views

Two Different Charge Pump Circuit Variants. What Are Their Advantages?

While looking at the L6470 stepper driver datasheet I came across the following charge pump circuit suggestion (I will just name it Variant A). The charge pump is used to provide the "Bootstrap ...
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1answer
136 views

What is pros&cons of using a unipolar stepper as bipolar?

I know that it is possible to drive a unipolar stepper motor as if it is bipolar. Clearly, for example, we can ignore center tap wires of a 6-wire unipolar stepper and drive it using a bipolar stepper ...
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24 views

Using l6506 with digital pot to vary force output of stepper

I want to precisely control the amount of force being applied to a component - my plan is to drive my stepper linear actuator with the absolute minimum current to make it move, until it stalls out ...
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30 views

Stepper motor in high RF environment

I'm building a sort of "screwdriver antenna". In my case I have a motorized roller inductor. This motor is placed near the bottom of the coil (the coil is placed near the center of the vertical ...
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70 views

A4988 current limit formula: Where does the constant “8” comes from?

I am trying to calculate the VREF for my A4988 and while my A4988 is not from pololu I am using their formula over at https://www.pololu.com/product/1182 to calc the current limit. The formula used (...
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1answer
46 views

Why are stepper motors sometimes rated in AC voltage?

Now, I think I get why steppers are rated at (for example) 48VDC - as I beleive it's to overcome any back-EMF, and that's why stepper controllers are typically constant(/max) current devices - they'll ...
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1answer
87 views

Is A4988 and DRV8825 Current Limit Setting RMS or Peak?

I'm trying to aggregate information on config settings and current limit calculations for all the popular "StepStick" style motor drivers. However, I've noticed that while the older type (A4988 & ...
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37 views

Calculate inductance for ESD protection

I am trying to use TMC2130 for drive a stepper motor that has attached with plastic pulleys assembly. According to data sheet I have to concider about ESD protection due to plastic rotating assembly. (...
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1answer
60 views

Does supply voltage affects stepper motor driver heat dissipation?

Below is a block diagram of a stepper motor controller with an external mosfet h-bridge that drives one of the stepper's coils. Let's say that the coil has 2ohm DC resistance and 3mh inductance, the ...
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60 views

why stepper motor lose magnetism?

I have very old desktop style 3 axis cnc machine. There were 2 dc motors for X-Y axis and a unipolar stepper for Z axis. I replaced the old DC motors with unipolar steppers. I personally made the ...
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1answer
135 views

Should ferrite beads be closer to the stepper motor or to the motor driver?

Stepper motor, cable with ferrite bead, and dual H-bridge driver: I noticed that the cable that came with these motors had the bead closer to one end. Does it matter which way it's wired as far as ...
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0answers
158 views

Nema17/A4988 + LED display pump, 5v circuit not complete?

I'm trying to build a pump from Instructables, with no experience at all. I appear to be pretty close but the 5V line from the Arduino does not power the driver or LCD screen via my perfboard, it ...
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1answer
50 views

Driving NEMA17 Stepper motor using leadshine driver

I'm trying to drive a NEMA17 stepper motor using LEADSHINE driver. At the beginning of rotation Motor turns few steps in opposite direction and then turns toward the given direction. Why this is ...
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63 views

stepper motor torque control

I am trying to make a sim racing wheel with force feedback using a closed loop stepper motor. I need to have variable torque applied to the wheel. If i use a transistor with a microcontroller to ...
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1answer
252 views

Controlling DC Motor with stepper driver

I only have a stepper motor driver TB6600 available at the moment, can I use it for control of a a brushed dc motor? I think it should work as I could use PWM. I also want to be able to reverse ...
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1answer
78 views

Two identical stepper motors behaving differently at higher (but below their rated) speeds

Note: My question might be short on specifics here when it comes to the motor-parameters, but I have been trying to understand a situation for the last 2~3 Weeks, and I still don't have an ...
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1answer
287 views

Why is low inductance important for stepper motors? [closed]

I’m building a CNC style device and am in the process of choosing the right stepper motors. I read that it’s important to buy steppers with maximally 5mH of inductance. Why exactly is that the case? ...
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3answers
72 views

Driving stepper motor with H-Bridge, how many Volts?

I know that stepper motors are usually driven with current-limiting chopper drivers and hence the applied voltage doesn't really matter (or does it?) and that's why specs of stepper motors don't state ...
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2answers
109 views

Arduino Laser Engraver cd drive - what do i connect where?

I am a beginner in the world of circuit boards and electronics, and this is my first real project. I am making a DIY laser engraver, following the instructions in this instructable. Here is the ...
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2answers
45 views

Voltage drop after writing to slave register with I2C protocol

I'm trying to control this bipolar stepper motor with an Adafruit Huzzah32 (ESP32) board and a stepper driver shield. Power sources: ESP32: 5V USB port Shield: 4 AA-batteries in series I ...
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0answers
381 views

Trinamic TMC2130 Stallguard is not working

I am trying to control a 17HS3401S stepper motor using an ESP8266 and a Trinamic TMC2130. The TMC2130 is on a clone (BIGTREETECH) SilentStepStick board. The stepper motor part of a leadscrew-based ...
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1answer
41 views

Pulse train profile generator for stepper drive step/dir input

All, I am trying to create a circuit to control a stepper drive step/dir input. I'd like to generate pulses starting at 1kHz and ramp up to a 10kHz peak, then decelerate to 1kHz until motion is ...
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1answer
233 views

Can a stepper motor flyback diode discharge a coil when connected in serial to the coil and opposite to the current?

On a circuit taken from this page http://www.opend.co.za/tutorials/steptut1.htm The last circuit shows two diodes positioned in reverse polarity to the current. It is supposed to protect against the ...
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195 views

How can I use an L298N driver with a 3.3v stepper motor?

so I'm starting to delve into stepper motors with arduino for a project I'm working on, which is proving interesting so far, with me first getting a motor far too small, and then also finding out that ...
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38 views

Is there risk to using magnets on an enclosure that would have 1-2A wire assemblies leaving the enclosure

Would there be a reasonable risk to using magnets to close a large enclosure panel which has 3 motor drivers with wire assemblies that leave the enclosure to drive stepper motors? The motor drivers ...
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2answers
193 views

Why are stepper motor phase currents a sinusoildal waveform?

I don't know if this is a really dumb question or not, but I've seen all kinds of torque, peak-current and RMS discussions related to current drive output for stepper motors. I acknowledge that for a ...
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2answers
173 views

Why isn't fast decay mode on an h bridge damaging

I'm struggling to understand how fast decay mode works on an h-bridge used for stepper motors . Particularly I've been looking at fast decay mode in this data sheet: http://www.ti.com/lit/an/slva321/...
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75 views

GM12-15BY-100 Stepper motor damaged,what caused it?

I have a dc stepper motor, GM12-15BYC: 2-phase, unload typical current = 150mA, Pull-out rate:800Hz, Pull-out torque:120 I am using the driver DRV8834 to control it. The configuration of the ...
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0answers
107 views

Circuit with DRV8825 and PCF8574 not working! Will it be a problem with the components itself?

I'm developing a circuit using a PCF8574 and a DRV8825 to control a step motor. The PCF8574 is used to control the reset, enable, sleep, modes and read the FAULT line of the DRV8825 using only the two ...
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106 views

Why cant I get clear wave?

I'm trying to find a good stepper driver with low vibrations and low noise. So, I observed wave form between current sensing resistor of few stepper driver using my oscilloscope. The voltage between ...
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185 views

TMC2130 IC only working when being probed

I designed a small shield for a Wemos D1 mini and a TMC2130 SilentStepStick. After the ESP boots up, it is supposed to initialize the TMC2130 via SPI to move a stepper motor afterwards. My problem is ...
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1answer
75 views

Power-down sequencing with a “hard” power switch (stepper driver)

I'm designing a stepper motor controller and would like to have some advice on sequencing the shutdown process with a "hard" power switch. The Toshiba TB6560 driver that I'm using requires a specific ...
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1answer
143 views

Building a water jet cutter using Arduino, CNC shield and GRBL firmware

I am building a water jet cutter using Arduino Uno and CNC shield for control. The CNC shield uses A4988 drivers to control the stepper motors. I uploaded the GRBL (for this shield) firmware to ...
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1answer
139 views

Stepper driver sine wave

I have a TB6660 Stepper driver and I gave pulse from an Arduino board. According to the TB6660 datasheet, drier should out a sine wave that created by using give square wave from Arduino. But, when I ...
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2answers
127 views

Driving a hobby stepper motor with an industrial PLC

I am working with an industrial PLC, the Beckhoff BX9000, with 24 V digital outputs. I am looking to drive a hobby stepper motor with Polulu's 'A4988 Stepper Motor Driver Carrier', which accepts logic ...
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1answer
171 views

Interfacing with (Two) Full-Bridge PWM Motor Drivers to Control a Stepper Motor

I am working to interface with an existing PCB with on-board Full Bridge PWM motor driver chips, which drive a stepper motor. The interface lacks any kind of standard step (clock) or direction signals ...
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2answers
67 views

Why is the common lead of unipolar motor connected to the high level voltage?

I'm trying to gain a deeper understanding of DC stepper motor because I'm using them for an arduino project. I was wondering about why the common lead of unipolar stepper motors is usually (always?) ...
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2answers
407 views

Picking a power supply for a TMC2130 stepper driver and motor

I'm trying to pick a power supply and need a little more guidance before I'm comfortable spending money on one. This site explains how to calculate your figures for power supplies but isn't too ...
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0answers
101 views

When is it appropriate to connect two steppers in series?

I'm considering building a machine that would have 4 axes, two of which would require two steppers each to allow for the desired mechanical layout. These pairs would have to run synchronously. That's ...