10
votes
L298 works only when touched
Your schematic does not show a connection from the ground line of the 12V battery to the GND connection on the Arduino. This is required.
- 6,974
4
votes
Accepted
`servo.attach()` paralyzing (one) motor on L298N
The Servo library uses Timer 1 to create the servo control signal. That means it can run the servo on any pin or combination of pins, and at the 50Hz speed that a servo likes best.
However, pins 9 ...
- 105k
3
votes
Beginner problem with DC motor
To analyze your problem:
Switch two wires between two motors (and repeat this to get all combinations), to find out if the code/wiring until the motors is wrong, or there is a problem with the motors....
- 13k
3
votes
DC Motor not running with the L298N (Green) card
First: The connection between the 5V pin of the L298N and Arduino Vin is not correct here. The L298N 5V pin is an output. You could use it to power the Arduino. But then you would have to connect it ...
- 16.5k
2
votes
Accepted
How to control a Nema 17 stepper motor with an arduino? (too much current / heat)
The stepper motor does not directly control or limit its own current. When using the L298n for stepper control, the motor current control is performed by a PWM signal to the L298n ENABLE pin. If you ...
- 66
2
votes
Arduino - stepper motor wrong steps number
You're driving the stepper too fast, unintentionally though.
The while loop you use to delay is likely optimized out by the compiler:
while (tmp2++<Speed);
Easiest way to fix would be to declare ...
- 141
2
votes
I want to make my stepper motor work for 1 hour
The problem you have is you are treating minutes and hours separately. That won't work - they need to be combined. As it stands your "on" time is:
Minutes greater than W, and
Hours greater than X, ...
- 105k
2
votes
Accepted
Controlling motors and servo with L298N
The comment you have found which is also on the Servo library page https://www.arduino.cc/en/Reference/servo and is the core of your problem.
On an Uno, you will have to change the PWM pins to 3,5,6 ...
- 791
2
votes
Arduino RFID with motor and limit switches
C++ and C only reads function declarations and globals from top to bottom, it will not look ahead to see if any others were defined.
You can put a declaration of the functions you want to use above ...
- 3,267
2
votes
Arduino 4wd rover
You need more power!
The formula for power is Volts * Amps. A PP3 has about 500mAh, which means its can (in theory) output 9V at 500mA for an hour, which means you have about 4.5 watts.
So what ...
- 5,637
2
votes
Accepted
L298N beeps and malfunctions when receiving certain analogWrite values
Ok, here is my theory what's happening:
Every motor has an amount of friction at his rotor. You need to pass enough energy to overcome this friction, or the motor will not move. When you use ...
- 16.5k
2
votes
Accepted
Motor isnt spinning when using L298N motor controller
You need two supply voltages for this board to work: motor supply, which goes directly to your motor (up to 35V for this L298N board, depends on what your motor needs), and logic supply of 5V, which ...
2
votes
L298N Dual Motor Controller Enable Pin has power but motors not working
I found this thread for a similar problem,
I realized that my scratch (taken from here) wasn't able to works..
After many and many tries, I found that:
the scratch works only using Serial Plotter, and ...
- 21
2
votes
How to communicate between a webcam and an Arduino UNO and get the live feed on mobile using ESP8266?
As rightly pointed out by others and @JRobert, its very difficult or nearly impossible to live stream a video/audio through Arduino Uno which uses Atmega328 micro-controller which is mostly used for ...
- 156
2
votes
Accepted
How to communicate between a webcam and an Arduino UNO and get the live feed on mobile using ESP8266?
The Uno is a very limited platform, perhaps surprisingly, given its wide range of abilities and built-in hardware features. The two most glaring limitations for you application are its 16MHz clock ...
- 15.3k
2
votes
Arduino Vin pin does not work, but Arduino 5v pin power works
The Vin pin on the Arduino Uno board is connected to the input of the 5V onboard voltage regulator of the Arduino board.
This voltage regulator needs an input voltage that’s about 1.5V above its (...
- 1,661
2
votes
l298n voltage loss when motor attached
The problem is in the H driver. You lose about 1.4 volts on each leg so your loss from the battery is about 2.8 volts. The internal driver transistors are in a darlington configuration. If the bridge ...
- 1,853
2
votes
Accepted
How to power Arduino Uno from L298N motor driver's 5v terminal?
Clearly, your design (last image) won't work, because as you expected, the Arduino won't have power. It is a feasible design however, if you use it while still developing and you have the USB cable ...
- 1,306
2
votes
are 4AA batteries (6V) power my arduino
I understand you situation completely as I had also previously experienced the same problem. 9 V batteries are not enough to get the job done.
Therefore, I suggest you to use two 3.7 V Batteries. ...
- 91
1
vote
can i use L298N H bridge with 12v 7AH battery?
Yes, though at 2A you're at the top end of the L298N current limit. Expect excessive heating. You will have to manage your thermal environment appropriately.
You should consider a more capable driver ...
- 105k
1
vote
Power 5v from l298n to 5v pin arduino
Power the arduino from your batteries via the Vin (barrel Jack) use the arduino to supply the 5V to the L298 module and connect all the grounds together. That should do it.
- 1,853
1
vote
How to control DC motor speed with L298N and Node MCU?
That's because the l298n library are used for the arduino or other microcontroller that have hardware PWM in their systems. The library using hardware pwm by generating pulses and make variations of ...
- 51
1
vote
DC Motor Control L298N
const int p1=7;//pwm pin for motor 1
const int p2=8; //pwm pin for motor 2
PWM pins on a '168 are 3,5,6,9,10,11
- 2,423
1
vote
Help me get my robotic car to work?
The ENA/ENB (enable A/B) pins have to be at HIGH level (either hardwired or set by an mcu). There exist lots of different driver boards (mostly based on the same ICs) which sometimes don't provide ...
- 1,869
1
vote
L298N motor driver issue
The specified minimum voltage for the motors is 2.5 volts higher than the logic supply.
You need to use a separate supply for the motor that is higher than the logic power.
- 993
1
vote
can I check if why my motor isn't working?
Well, your wiring is OK, but I think the
'digitalWrite(enB, HIGH);
in the loop() code is causing your problem. You don't want to try to use the same pin for both digital and analog functions.
I ...
- 762
1
vote
Accepted
Not able to control DC motor speed with l298N & pwm pins
Modifying the library code file L298N.cpp. Insert 2 lines in setSpeed():
void L298N::setSpeed(unsigned short pwmVal)
{ _pwmVal = pwmVal;
if (_ismoving == true) // +++
...
- 26
1
vote
Not able to control DC motor speed with l298N & pwm pins
Try to use this code, without the library, and be sure to connect every pin to the correct Arduino output. If everything is okay it should work. Check the tutorial here
int IN3 = 5;
int IN4 = 4; ...
- 182
1
vote
DC motors not running using PWM and L298N motor driver
According to the Servo reference page it's not possible to use Servo library and PWM outputs on the pins 9 and 10.
On boards other than the Mega, use of the library disables analogWrite() (PWM) ...
- 4,777
Only top scored, non community-wiki answers of a minimum length are eligible