Hi all
I want to use an L298N with arduino in order to drive two motors and be able to change the rotation movement.
after some research I came with the scheme in attachment
I was wondering if my scheme is correct ?
Also do I need the 0.5 ohm resistors ?
thanks in advance.

 

That's probably correct but the resolution of the image is too low to be sure of pin numbers.
You only need the resistors if you are going to control the current by monitoring the voltage across those resistors.

 

Also do I need the 0.5 ohm resistors ?

Yes, take a look at the data sheet. Note pins 1 and 15. Less a path to ground through those two shunt resistors there would be no outputs.

@albert, will it work less the resistors? Less the resistors we would ground pins 1 & 15 correct? I agree they are only current shunts but we would ground those pins.

Ron

 

Yes, take a look at the data sheet. Note pins 1 and 15. Less a path to ground through those two shunt resistors there would be no outputs.

@albert, will it work less the resistors? Less the resistors we would ground pins 1 & 15 correct? I agree they are only current shunts but we would ground those pins.

Ron

Yes, resistors of zero ohms

 

Thank you Mr. Hall.

Ron

 

thanks a lot; it works.
I noticed the L298N gets hot a little bit;
Is the device reliable if I keep it running for a very long time ?

 

Working within its rated current it should run indefinitely and it does have thermal protection so should shut down if over temp.

Ron

 

thanks a lot; it works.
I noticed the L298N gets hot a little bit;
Is the device reliable if I keep it running for a very long time ?

A "little hot" or a blister on your finger after a half second to a second (on the plastic body).

Those can handle some surprising temps (130°C)

 

Do you have it mounted on a heat sink?

 

Do you have it mounted on a heat sink?

If you can keep your finger on it then it doesn't need a heatsink.