L298N is a dual h-bridge motor drive chip, wherein each H-bridge can provide a current of 2A, the power supply voltage range of the power portion is 2.5-48V, the logic portion 5V is powered, and the 5VTTL level is accepted. Under normal circumstances, the voltage of the power portion should be greater than 6V or if the chip may not work properly.
L298N drive motor wiring
This time, using Arduino simply controls the advancement and turning of the car.
Not much to say, the stuff to prepare is: the car chassis, Arduino controller, Arduino sensor expansion board (here I am convenient for wiring), L298N DC motor drive board, battery, DuPont line several.
L298N bridge DC motor driver board Wiring method and usage method The previous article has been introduced since the train driver. This is no longer said, but there are some netizens unclear how to control the two DC motors, as well as netizens for the previous article. Reflections unclear, do a detailed description.
Be
First, the VMS drive portion takes an electric power supply to the power supply, which is generally 12V, and the logical part can be removed from the board, that is, the terminal can be floating, or access + 5V- + 7V. The three plugs of the left and right rows of terminals are used to control two DC motors, respectively. EA, EB Access ARDUINOPWM interface is used for motor speed control, I1, I2, I3, I4 interfaces, which are used to control two DC motors, backward, steering, and brakes, only need to access Arduino's digital interface.
It is basically completed by this preparation. You can write the program. Here is a small car to go straight, back, left, right turn, and brake function. Processes for your reference.
The procedure is as follows:
INT PINI1 = 8; // Defines I1 interface
INT pini2 = 9; // Defines the I2 interface
INT SpeedPin = 11; // Defines the EA (PWM speed control) interface
INT PINI3 = 6; // Defines the I3 interface
INT pini4 = 7; // Defines the I4 interface
INT SpeedPin1 = 10; // Defines EB (PWM speed control) interface
Void setup ()
{
PINMODE (PINI1, OUTPUT);
PINMODE (PINI2, OUTPUT);
PinMode (Speedpin, Output);
PINMODE (PINI3, OUTPUT);
PINMODE (PINI4, OUTPUT);
PinMode (SpeedPin1, Output);
}
Void loop ()
{
// go straight
AnalogWrite (SpeedPin, 100); // Enter the analog value to set the speed
AnalogWrite (SpeedPin1,100);
DigitalWrite (PINI4, LOW); // Remove the DC motor (right) counterclockwise
DigitalWrite (PINI3, HIGH);
DigitalWrite (PINI1, LOW); // Make DC motors (left) clockwise
DigitalWrite (PINI2, HIGH);
DELAY (2000);
//
AnalogWrite (SpeedPin, 100); // Enter the analog value to set the speed
AnalogWrite (SpeedPin1,100);
DigitalWrite (PINI4, HIGH); // Make DC motors (right) clockwise
DigitalWrite (PINI3, LOW);
DigitalWrite (PINI1, HIGH); // Remove the DC motor (left) counterclockwise
DigitalWrite (PINI2, LOW);
DELAY (2000);
//Turn left
AnalogWrite (SpeedPin, 60); // Enter the analog value for setting speed
AnalogWrite (SpeedPin1, 60);
DigitalWrite (PINI4, LOW); // Remove the DC motor (right) counterclockwise
DigitalWrite (PINI3, HIGH);
DigitalWrite (PINI1, HIGH); // Remove the DC motor (left) counterclockwise
DigitalWrite (PINI2, LOW);
DELAY (2000);
//Turn right
AnalogWrite (SpeedPin, 60); // Enter the analog value for setting speed
AnalogWrite (SpeedPin1, 60);
DigitalWrite (PINI4, HIGH); // Make DC motors (right) clockwise
DigitalWrite (PINI3, LOW);
DigitalWrite (PINI1, LOW); // Make DC motors (left) clockwise
DigitalWrite (PINI2, HIGH);
DELAY (2000);
// Brake
DigitalWrite (PINI4, HIGH); // Make DC Motors (Right) Brake
DigitalWrite (PINI3, HIGH);
DigitalWrite (PINI1, HIGH); // Make DC Motors (left) brakes
DigitalWrite (PINI2, HIGH);
DELAY (2000);
}, Read the full text, the technical area
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