Questions tagged [l298]

Anything related to the L298 integrated circuit. The L298 is a high voltage, high current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors.

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3answers
448 views

Can we or should we parallel H-bridge module for increse current?

Can we parallel H-bridge input and output for increse current? For specific I select 2 case L298N (BJT based) TB6612FNG (Mosfet based) For L298N as shown in datasheet suggested to parallel chanel to ...
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3answers
657 views

Problem with the L298 datasheet

I was studying the L298 datasheet and I noticed something; So basically an H-bridge contains two PNP and two NPN transistors as shown in the image: but in the datasheet, there are no PNP transistors ...
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0answers
62 views

Datasheets do not mention and explain enough about current

I'm trying to build my first IoT project. I'm using an L298 motor drive, an MCU-6050 6 axis gyroscope and accelerometer and an Arduino Due. When going through their datasheets, most of the tables and ...
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1answer
27 views

Heat sink for the L298 stepper driver IC

I am coming today to seek help from you for sizing a heat sink for the L298N IC. This Ic will be used to drive a 2A/phase stepper driver, supplied with a 12Vdc signal, and 5Vdc for the logical part. ...
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1answer
45 views

How to interface with an H-bridge IC (L298N) using a single PWM pin

I would like to know if it's advisable to control an H-bridge IC (L298N) using a single PWM pin? Let me explain: By driving ENB pin High and by feeding complementary PWM (achieved by using a simple ...
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1answer
50 views

How to use L298N motor driver with battery

I connected L298N motor driver (https://www.itead.cc/wiki/MotoMama) to 4x AA batteries in series (6V) connecting battery holder's positive terminal to Vsupply and negative terminal to GND which is ...
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3answers
343 views

How do I correctly power the l298n motor driver with 6v?

Recently, I have purchased the L298N Motor Driver with a couple of 3V-6V motors. I am planning to make a robot buggy to hold other projects I may do with the Raspberry Pi. Currently, I have been ...
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1answer
93 views

Powering an L298N's IC and an Arduino Uno R3 using an LM7805

Before i start i would just like to say that i am an absolute beginner at this, and this question might be a little silly. I'm trying to make a shield that'll go on top of an arduino uno. The shield ...
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2answers
494 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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2answers
305 views

Drive H-Bridge using analog signal instead of pwm? [closed]

Is it possible to drive an H-Bridge like the L298n using actual analog signals rather than digital PWM signals? If not, what would be the equivalent to an H-Bridge that allows for this?
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0answers
154 views

L298N motor driver not working after connecting SPST switch

So when I had all wired as depicted in the first image, it worked fine, no problems. The red LED on the L298N board was illuminated and the dc motor was following commands from my Raspberry Pi. Now I ...
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1answer
82 views

DC Motor bridge driver L298N. Why separate the tracks after R sense resistors from GND plane?

The L298N datasheet says: The sense resistor, not of a wire wound type, must be grounded near the negative pole of Vs that must be near the GND pin of the I.C. why not in common GND plane? If I ...
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1answer
158 views

speed control PWM, DC motor, L298n with LPCxpresso 1549

this is my first post and I'm just asking a little bit about motor control in a team project, where I'm member of. This is a bit of a "not so serious" project so probably the solar panel system ...
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1answer
1k views

Review of PCB design L298n

I'm decided to finally make my motor driver boards but I'd be happy to have some feedback as it's my first PCB design. It's mostly based on the datasheet of the l298n chip. So there is nothing much ...
0
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1answer
254 views

DC motor driver response [closed]

I have some trouble about the response of the L298N DC motor driver. After some experiments, I have noticed that the output response of the L298N isn't linear. In particular, if i give a ramp input ...
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2answers
85 views

Is the 5 V rail of an LM298 reliable?

I’m trying to build a simple robot using 4 DC motors with 2 LM298's controlled by node mcu and powered by LiPo 3s battery. Since powering the node mcu directly to the 3s LiPo(11. Iv) would be ...
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4answers
3k views

Why don't flyback diodes in H-bridge damage power supply?

I'm currently learning about driving a small DC motor (~ 5V). My research so far indicated that a L298N might be a good choice to quickly get something up and running. However, I'm also trying to ...
0
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1answer
497 views

What PWM Frequency should be used for a 12V DC Gear motor?

I have this 12V DC Gear motor, but I can't find much info about it online. The reason I have bought it was that I found this particular motor across several tutorials on how to build an RC car. I ...
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2answers
550 views

Voltage lower than expected with Nema 17 stepper motor and L298N

I am using an L298N motor driver with a Nema 17 stepper motor. I am trying to use the motor to turn a valve, but there is not enough torque so the motor is skipping steps. I am controlling the motor ...
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0answers
1k views

Diagram of L298N with Arduino

1- Am I correct in my schematic if I want to connect L298N to arduino to drive 2 motors ? 2- are the resistors of 0.5 ohm mandatory ? (I saw them in datasheet) 3- Am I missing components in my scheme ?...
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3answers
487 views

Powering Stepper Motors Using Drivers

I am working on a project involving several stepper motors, I have chosen the L298N as the driver - and my system supply is a switching power supply 12V 15A. My question is, how can I connect the ...
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0answers
376 views

L298 distorts signal

I connected STM32 F334R8 microcontroller to L298 H-bridge. I made some measurements. The problem is output signal on L298 has quite slow slopes and is not as sharp as input signal. I do not understand ...
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1answer
71 views

Will this N-Channel Mosfet work as high-current motor controller?

We are building a mobile robot which will use two motors in a differential drive configuration to maneuver and move around, and we want to choose the right driver IC or transistor circuit for the job ...
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2answers
8k views

L298n PWM frequency

I'm using the L298 Dual H-Bridge to control a pair of 6V @ 1600mA DC motors for a line follower robot. I'm connecting "Enable A" and "Input 1" to Vcc and "Input 2" to uC with PWM. Which frequency do ...
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1answer
1k views

L298N (via 74HC595) motor control - unexpected voltage & motor not spinning

(Corrected version as last text was somehow corrupted) I have made a circuit with L298N in order to control direction of 2 DC motors. When I power the circuit I noticed that voltage between 2 output ...
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1answer
311 views

Confusion about L297 pins

I'm developing the PCB of my L297-L298 stepper motor driver, but I have a doubt about the SENSE pins of the L297 I.C. I understand that the pin 13 and 14 of the L297 are used for controlling the ...
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1answer
719 views

NEMA17 Stepper motor not turning, but making very little noise [closed]

I have a NEMA17 stepper motor (2 Phase, Rated 12V, 1.2A/Phase) and I am trying to make it run with an L298N and a Raspberry Pi. Everything is wired up as shown below in the pictures. I use a 12V, 2A ...
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1answer
2k views

Selecting pwm frequency for speed control of a dc motor?

I am using L298 motor driver to drive motors (12v , 900mA),I am using PWM to control motor speed but the problem is 1.When I set PWM frequency to 100 Hz motor work with jerks no noise at all. 2....
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2answers
299 views

L298 driver for two different DC motors

I have a L298N and I want to use it to drive two DC motors. The problem I face is that one motor is working at ~7.2V and the other one at 3.3V (it's a car, the 3.3v motor is used for steering). I will ...
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2answers
334 views

Servo conflicting with other dc motors

I am using the L298N motor driver for a robotics project to control 4 motors. 2 in each input and output terminal. I have this connected to an arduino uno which is powered by about 7-8v from nimh ...
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1answer
589 views

How should I power my robot using 7.2v [closed]

I am extremely puzzled on how to power my robot correctly. I would like to use 6 rechargeable aa batteries, 1.2v and 1300mAh each, to form 7.2v to power it (since it is what I have purchased and have ...
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2answers
91 views

Will this power source and setup work?

I am aware the arduino requires at least 250mA and to power several components 1 amp would be better. source [http://playground.arduino.cc/Learning/WhatAdapter] This is a motor the driver I am using ...
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0answers
494 views

Why are the power pins on an L298 H-Bridge named “Vss” & “Vs”

I understand that Vs is where the H-Bridge gets it's power for driving the motors and that Vss is used for driving the logic, and they both sink to a common ground named "GND". My question is why are ...
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1answer
355 views

Why dc motor is buzzing when using it with XL6009 converter?

I have the following scheme RPI, L298n with 6v DC motor. I'm trying to add a XL6009 boost converter but set to boost 5v into 6v but sometimes the motor is rotating and sometimes is buzzing. Does this ...
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2answers
1k views

Current chopping with an h-bridge and PWM

I have some stepper motors and L298N dual h-bridge drivers. I can't find exact specs for the steppers,* but similar motors from another product line have rated voltages from 2.64v to 5.8v. Since most ...
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2answers
770 views

Why are the capacitors on the image being used with the DC motor?

Why are the capacitors on the image being used with the DC motor? For my arduino aplication with L298n is ok to keep or remove them?
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1answer
355 views

Mosfet to save power

I am making a battery powered project which involves bi-directional motor control. However motor needs to turn rarely (about 10-20 seconds in 24 hour period). I am using L298 motor driver. However the ...
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2answers
823 views

Using an L298 to drive 2 unidirectional and 1 birectional motor simultaniously

First up I am not an EE and am fairly new to this, so please forgive my ignorance. I have a project that requires me to control 2 unidirectional and 1 bidirectional brushless DC motor at the same ...
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1answer
539 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 and ...
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2answers
3k 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 ...
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1answer
847 views

L298 high side driver: how does this actually work?

I recently took another look at the L298 since some students were having problems (due to the commonly discussed high V_CE-on of the combined high side and low side drivers). One thing that struck me ...
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2answers
11k views

L293, L298 and SN754410 H-bridge drivers on low voltage power supply

This question is about the following three integrated H-bridge drivers: - L293 or L293D (D = protection diodes added) SN754410 (protection diodes included) L298 (no protection diodes) Time after ...
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1answer
2k 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 just ...
2
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2answers
487 views

L298 dual H-Bridge RDS(on)

I am working on a project that mandates the use of a particular Arduino motor driver shield, which makes use of an L298 dual H-bridge (datasheet here) I need to perform some power calculations in ...
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1answer
4k views

Removing jumpers from an L298N Dual H-Bridge

I've got an L298N dual H-bridge which I'm using to control two DC motors with an arduino. I want to be able to control the speed of the two motors using PWM. My understanding is that I need to ...
3
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1answer
8k views

L298 IC motor driver - how to wire and use correctly? [duplicate]

EDITED. I found that my supply of 3V was insufficient as there are voltage drops across the transistors. I replaced the 3V supply with 4.5V and the motor ran fine - although now my 3V motor has 2.5V ...
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2answers
1k views

Having trouble with L298N H-Bridge IC

I cannot understand how this IC works from the block diagram given in the datasheet. I understand the concept of an H-bridge, but cannot figure how this one operates. I drew on the schematic to ...
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1answer
1k views

Current limiting on a stepper controlled by L293D on an arduino board

I currently have a bipolar stepper motor connected to a l298n, with one resistor to each coil. The problem is it draws a lot of power when there is no need to, and limits the maximal power of the ...
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1answer
4k views

24V H-Bridge DC motor, why voltage drop to 3v if motor connected

I want to drive a DC motor using an L298N H-Bridge Driver IC. I'm using the schematic from this website: The motor is 24 V with about 7.5 ohm impedance (thus, it draws about 3.2 A). I'm using a 24V ...
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2answers
3k views

PWM vs. PPL in L298 motor controller

I am currently developing a small robot project. The motor driver I have uses a L298 motor driver IC. It supports two methods of control, PWM and PLL and it is configurable with on-board jumpers on my ...