After, connect these motors to the motor driver board. Next, glue the motor driver board to the top of the chassis. Then, attach the rotate wheel as follows. Thirdly, glue the gear motors to the robot car chassis.
Secondly, cut the robot car chassis as follows. Arduino UNO board 4 – way line tracking sensor module L298N motor driver Gear motor Robot wheel Li-ion battery holder Li-ion battery Jumper wires Foamboard Step 2
In this way, the robot moves forward on the black track. Also, this process is set up in the program. Includes a heavy-duty heat sink for maximum. Screw terminals for easy connections to motors and power. Independent direction, speed, and braking for each motor. Provides 4 LEDs that reflect the state of the control logic. Drives motors from 5-35V at up to 2A per channel. So, when the two middle sensors move on the white surface, they move back on the black track, and when the two sensors on either side move on the black track, they move back to the white surface. Features : Popular L298N Dual H-Bridge Motor Driver chip. In this situation, when the robot is powered, the robot moves forward. The two sensors on either side should be on a white surface. Also, according to the robot in this project, this black track should resemble the two sensors in the middle. If you want to control the speed of motors, you need to remove the jumpers and connect them to PWM-enabled pins on Arduino.This robot needs a black track on a white surface to work. When this jumper is in place, the motor is enabled and spins at maximum speed.
The module usually comes with a jumper on these pins. Speed Control Pins :ENA and ENB are used to turn the motors ON, OFF and control its speed. Output Pins : The L298N motor driver’s output channels for the motor A and B are broken out to the edge of the module with two 3.5mm-pitch screw terminals.ĭirection Control Pins : The IN1 and IN2 pins control the direction of the motor A while IN3 and IN4 control the direction of the motor B. Warning : if the motor power supply is greater than 12V, you should remove the jumper to avoid the on-board 5V regulator from getting damaged.Also DO NOT supply power to both the motor power supply input and 5V power supply input when jumper is in place. And they both sink to a common ground named ‘ GND ’. ' Vss ' is used for driving the logic circuitry which can be 5 to 7V. Power Supply : From ' Vs ' pin the H-Bridge gets its power for driving the motors which can be 5 to 35V. For more details the datasheet given to the below link. It is a high voltage, a high current dual full-bridge driver designed to accept standard TTL logic levels. which is an integrated monolithic circuit in a 15-lead Multiwatt package. The L298N is a dual-channel H-Bridge motor driver capable of driving a 2x DC motors, making it ideal for building two-wheel robots. An L298N motor driver module consists of an L298N motor driver chip(IC). This leads to a change in the direction of the motor. H-Bridge – For controlling rotation direction: An H-Bridge circuit contains four switches with the motor at the center forming an H, closing two particular switches at the same time reverses the polarity of the voltage applied to the motor.
L298N MOTOR DRIVER 4 WHEELER SERIES
PWM – For controlling speed: PWM is a technique where average value of the input voltage is adjusted by sending a series of On/OFF pulses, the average voltage is proportional to the width of the pulses known as Duty Cycle.The higher the duty cycle, the greater the average voltage applied to the dc motor this lead to the highest speed.
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