investorbta.blogg.se - L298n motor driver reverse direction

Declare P2.0 and P2.1 as inputs and P3.0 and P3.1 as outputs.

8 th and 16 th pins of the motor driver are connected to the +5V supply.ĭo you know How to Control Stepper Motor using 8051 Microcontroller? Algorithm First switch rotates the motor in clockwise direction and second switch rotates the motor in anti clockwise direction. Switches are connected to the P2.0 and P2.1 of the Microcontroller in pull down configuration. EN1 pin is connected to the 5V DC to drive the motor. DC motor is connected to output terminals of L293D. Here, the motor driver input pins IN1, IN2 are connected to the P3.0 and P3.1 respectively to control the motor directions. The major components in the above circuit diagram are at89c51 microcontroller and motor driver. Get an idea about How PWM Based DC Motor Speed Controlling Circuit Works using Microcontroller Circuit Design The current and voltage ratings of L298N are higher than that of L293D Motor Driver.įor more information on L298N Motor Driver Module, refer to the “ A BRIEF NOTE ON L298N MOTOR DRIVER“.Ĭircuit Diagram for Interfacing DC Motor with 8051 Microcontroller and L293D The L298N Motor Driver Module is more frequently used driver IC’s now-a-days.

IN3=1 and IN4=0 -> Motor2 Clock wise direction.

IN3=0 and IN4=1 -> Motor2 Anti-clock wise direction.

IN1=1 and IN2=0 -> Motor1 Clock wise direction.

IN1=0 and IN2=1 -> Motor1 Anti-clock wise direction.

EN1 and EN2 must be high to drive the 2 DC motors. Motors directions depends on the logic inputs applied at this pins. H-bridge is a circuit which allows the voltage in either direction to control the motor direction. This IC works based on the concept of H- Bridge. L293D is a quadruple H- bridge motor driver, as the name suggests it used to drive the DC motors. In case of L298N, the motor supply is up to 46V and it can provide a current of 3A. For L293D Motor Driver, the motor supply is variable between 4.5 to 36V and it provides maximum current of 600mA. Using these IC’s, we can drive two DC motors at a time.

Here, we are using L293D and L298N motor driver ICs to drive DC motors. So, we use motor driver circuit in between a DC motor and the microcontroller.Īlso read the interesting concept: Interfacing 7 Segment Display to 8051 Microcontroller Hence, it is not good to interface DC motor directly to the controller.

But the power requirements of most of DC motors is out of reach of the microcontroller and even the back emf (electro motive force) which is produced by the motor may damage the microcontroller. The maximum output current of microcontroller pin is 15mA at 5V. Circuit Diagram for Interfacing DC Motor with 8051 Microcontroller and L298N.Circuit Diagram for Interfacing DC Motor with 8051 Microcontroller and L293D.