L298N and problems with steppin motor

Hi! I'm new to forum and electronic.
I've searched and unfortunately, I couldn't find a problem excatelly like me. Briefly, I connected UNO, Keypad, LCD 1602 (with connection shield), L298N driver and a small minebua stepping motor. At early tests (just a few second) all thing was good but when i assembled them, use a good 12V 1.5 A wall adaptor and connect 5V of the driver to VIN of UNO, No! the motor works and suddenly doesn't and suddenly do. The heat sink is hot!
Four scenarios:

  • The 12 V (all jumpers leave in place) is high! (Rejected by me)
  • Iinternal short break of the L298N. (How can i check it?)
  • Incorrect driver! (See the later passage)
  • Need fan . (Rejected by me)

I've read some where that this old IC isn't efficient, the output current is just 500 mA not 1-2 A. I read a MOSEFT can work without heat sink up to 1.5 A.

What is the problem? If i must change the driver, Which is good for me? (cheap, easy to run and steady for long time works). Please guide me.

a small minebua stepping motor.

What are the voltage and current requirements for this motor. Can you provide a datasheet link?
UNO VIN pin needs at least 7V (up to 12) to get 5V from regulator, if your 5V supply is regulated and stable, connect to 5V pin.

The heat sink is hot!

Heat sink on what?

outsider:
What are the voltage and current requirements for this motor. Can you provide a datasheet link?
UNO VIN pin needs at least 7V (up to 12) to get 5V from regulator, if your 5V supply is regulated and stable, connect to 5V pin.Heat sink on what?

[quote
Heat sink on what?
[/quote]
I use L298N driver not just an IC. heat sink on the IC.
http://www.eshop.kharazmi.co/images/L298StepperController_thumb_cz9mv2by.jpg

Hi,
Your link to the stepper specs tells us nothing that we need.
No voltage rating.
No current rating.

Can you post the make and model number of the stepper.

Thanks.. Tom.. :slight_smile:

Sorry, I don't know why i couldn't find this page. Please read all properties here. (http://www.eminebea.com/en/product/rotary/steppingmotor/hybrid/standard/17pm-k.shtml)


What about A4988? It is very cheap here less than 2 $!

HI,
Okay getting closer, WHICH MODEL NUMBER...

Tom....... :o :o :o

I don't remember the exact model number. I must see it hours later. But i know it is removed from original site. . I guess the current is 1 A.

Do you have an ohmmeter to measure the winding resistance? That would help ID the motor you have, also, all those motors look like low impedance types, so L298 is not suitable, you need a chopper drive with adjustable current limit.

TomGeorge:
Hi,
Your link to the stepper specs tells us nothing that we need.
No voltage rating.
No current rating.

Can you post the make and model number of the stepper.

Thanks.. Tom.. :slight_smile:

Steppers don't have a voltage rating, just current, inductance, resistance, steps/rev, hold-in-torque.

Hi,

No! the motor works and suddenly doesn't and suddenly do. The heat sink is hot!

You have the stepper with your project, does it have anything written on it?

Tom... :slight_smile: :o

These links may help
Stepper Motor Basics
Simple Stepper Code

An L298 is a poor choice for driving a stepper motor.

...R

Robin2:
These links may help
Stepper Motor Basics
Simple Stepper Code

An L298 is a poor choice for driving a stepper motor.

...R

Suggest one!

shimidan:
Suggest one!

It's in my link - read it.

...R

Robin2:
It's in my link - read it.

...R

Thanks. very useful. Actually, and before reading this post, I went to down town and bought a A4988 (main chip probably allegro). I'll test it.

I found some other drivers like tb6612fng and drv8825.

Model of my motor.


I got a problem like a4988 stepper..., with my new a4988. I set VDD and VIN incorrectly and then i correct them. All grounds are connected together.

Hi,
17pm-k502-p2st

Specifications:

Series: 17PM
Type: Standart
Coil Type: Bipolar
Supply Voltage: 12-36VDC
Steps per Revolution: 200
Step Angle: 1.8°
Diameter - Body: Square 1.65" (42.00mm)
Lenght - Body: 1.299" (33.00mm)
Diameter - Shaft: 0.196" (5.00mm)

Tom.... :slight_smile:

TomGeorge:
Hi,
17pm-k502-p2st

Tom.... :slight_smile:

WOW! I couldn't find these from manufacture sites. Could say what is the current of the motor?

shimidan:
I got a problem like a4988 stepper..., with my new a4988.

I'm not going to read 3 pages of posts to see what you are talking about. Please just describe exactly what you did (with wiring diagrams) and tell us what your current problem is.

The Pololu a4988 web page has great information about using the A4988.

Read first. Experiment second.

...R

shimidan:
WOW! I couldn't find these from manufacture sites. Could say what is the current of the motor?

I'm trying, unforunate that the info is so limited.
Can you ,measure the resistance of the windings of the stepper?
Thanks.. Tom... :slight_smile:

TomGeorge:
I'm trying, unforunate that the info is so limited.
Can you ,measure the resistance of the windings of the stepper?
Thanks.. Tom... :slight_smile:

Each coil 2.3 Ohm.