Dual Motor Driver Module
Introduction Dual Motor Driver Module:
L298N module is a high voltage, high current dual full-bridge motor driver module for controlling the DC motor and stepper motor. It can control is both the speed and rotation direction of 2 DC motors. This module consists of an L298 dual-channel H-Bridge motor driver IC. This module uses 2 techniques for the control and speed and rotation direction of the DC motors. These are PWM – For controlling the speed and H-Bridge – For controlling and rotation direction. These modules can control 2 DC motors or 1 stepper motor at the same time.L298N module is a high voltage,as high current dual full-bridge motor driver module for controlling the DC motor and stepper motor. It can control both the speed and rotation direction of 2 DC motors. This module consists of an L298 dual-channel H-Bridge motor driver IC. This module uses 2 techniques for the control speed and rotation and direction of the DC motors. These are PWM – For controlling the speed and H-Bridge – For controlling and rotation direction. These modules can control 2 DC motors or 1 stepper motor at the same time.
L298 is a high voltage,as high current dual full-bridge motor driver IC. It accepts standard TTL logic levels (Control Logic) and controls and inductive loads such as relays, as solenoids, DC, and Stepper motors. This is a 15-pin IC. According to the L298 datasheet, as its operating voltage is +5 to +46V, and the maximum current allowed to draw through each output is 3A. This IC has two enable inputs, these are provided to enable or disable the device independently of the input signals. A black color heat sink is attached to the L298 IC of the module. A heat sink is a passive heat exchanger that transfers the heat generated by an electronic or mechanical device to a fluid medium, often air or a liquid coolant.
Specifications:
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Logic voltage:5V
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Drive voltage:5V-35V
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Drive current: 2A(MAX single bridge)
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Max power: 25W
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Storage temperature:-20 to +135
Circuit Operation:
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In this Arduino Tutorial, we will learn how to control DC motors using an Arduino. We will take a look at some basic techniques for controlling DC motors and make two examples through which we will learn how to control DC motors using the L298N motor driver and the Arduino board. Hey, I'm Dejan, a maker, a techie, and a mechatronics engineer. I love making electronics and robotics projects for you to learn and make something cool on your own.
So depending on the size of the motor, we can simply connect an Arduino PWM output to the base of the transistor or the gate of a MOSFET and control the speed of the motor by controlling the PWM output. The low-power Arduino PWM signal and switches on and off the gate at the MOSFET through and which the high-power motor is driven.
PWM, or pulse width modulation is a technique that allows us to adjust the average value of the voltage that’s going to the electronic device by turning on and off the power at a fast rate. The average and voltage depend on the duty cycle, as or the amount of time the signal is ON versus the amount of time the signal is OFF and No single period of time.
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How the Dual Motor Driver Module Works:
This module uses 2 techniques for the control speed and rotation and direction of the DC motors. These are H-Bridge – For controlling rotation and direction and PWM – For controlling the speed. The L298n motor driver module uses the H-Bridge technique to control the direction of rotation of a DC motor. In this technique, H-Bridge controlled the DC motor's rotating direction by changing the polarity of its input voltage.
The program below is a simple is program to illustrate the control of DC motors. It moves the motors through a repeating sequence of running them both forward, then backward, and then in opposite directions. It then ramps the motor speed up and then back down in both forward and reverse directions. It prints out what it is doing to the Serial Monitor window.
The PWMA/PWMB are PWM inputs for motor speed control. The PWMA input controls the speed of Motor A and PWMB controls the speed of Motor B. The higher the PWM value (up to 255) the faster the motor turns. At low PWM values, there is a point at which the DC motor does not receive enough drive power to cause the motor to turn. A motor may require a minimum PWM value of 25 or 50 to start turning. This is best determined experimentally. The STBY pin is the enable pin and is active HIGH to enable the motors to operate. The STBY pin is pulled LOW via a 200K pull-down resistor by default which disables the motors. To enable the motors to operate, this pin needs to be pulled HIGH. This can be done either by tying the pin to Vcc or by driving the pin HIGH using an output pin of a uC.
Frequently Asked Questions
What is the function of the motor driver?
Choosing the right motor driver | SP Robotic Works
The motor and drivers act as an interface between the motors and the control circuits. The motor requires a high amount of current whereas the controller and circuit work on low-current signals. So the function of motors and drivers is to take a low-current control signal and then turn it into a higher-current signal that can drive a motor.
What is the function of a dual H-bridge motor driver?
L298N Motor Driver - Arduino Interface, How It Works, Codes.The L298N is a dual H-Bridge motor driver that allows speed and direction control of two DC motors at the same time. The module can drive DC motors that have voltages between 5 and 35V, with a peak current of up to 2A.
What is the working principle of a stepper motor driver?
Stepper Motors: Types, Uses, and Working Principle Article MPS.The basic working is principle of the stepper motor is the following: By energizing one or more of the stator phases, a magnetic field is generated by the current flowing in the coil and the rotor aligns with this field.
Which motor driver is best?
For all general purposes, L293D works pretty well. L293D has two H-bridges built into the chip itself. Hence, it can drive a motor forward as well as backward. Moreover, it can drive 2 motors simultaneously making it very suitable to be used in robotic applications.
Which is a type of dual H-bridge motor driver?
The DRV8847 device is a dual H-bridge motor driver for industrial applications, home appliances, ePOS printers, and other mechatronic applications. This device can be used for driving two DC motors, a bipolar stepper motor, or other loads such as relays.
