#L298N MOTOR DRIVER CIRCUIT DIAGRAM SERIES#

Power consumption for logical part: 0 ~ 36mA.

Logic voltage Vss: +5 V ~ +7 V ( power taking from board: +5 V).

Maximum power consumption in total is 20W. In practice this will depend on ambient conditions and air flow.

If the on-board regulator is usedВ toВ supply external components then the supply range is +7 V ~ +35 V. LED's are provided to show motor direction and power supply. Motor connections, power and ground are made easily using the screw terminals while logic connections are provided on a 0.1' header for easy connection using jumper leads. The on-board 78M05В 5V regulator can be used to supply logic powerВ of ~450mA to the board or external microcontroller with a supply of 7-35V. It has a peak current of 2A per motor and can be controlled via TTLВ from any microcontroller with 3.3-5V inputs. When youвЂ™re done you should have something that looks similar to the illustration shown below.The motor driver is based on the popular L298 chip. You can interchange your motorвЂ™s connections, technically, there is no right or wrong way. Note that the Arduino output pins 9 and 3 are both PWM-enabled.ДЇinally, connect one motor to across OUT1 & OUT2 and the other motor across OUT3 & OUT4. Now, the input and enable pins(ENA, IN1, IN2, IN3, IN4 and ENB) of the L293D IC are connected to six Arduino digital output pins(9, 8, 7, 5, 4 and 3). Make sure you common all the grounds in the circuit. Connect Vcc1 pin to 5V output on Arduino. Next, we need to supply 5 Volts for the L293DвЂ™s logic circuitry. So, we will connect external 9V power supply to the Vcc2 pin. In our experiment we are using DC Gearbox Motors(also known as вЂTTвЂ™ motors) that are usually found in two-wheel-drive robots. Start by connecting power supply to the motors.

Now that we know everything about the IC, we can begin hooking it up to our Arduino! Wiring L293D motor driver IC with Arduino UNO But, with Pulse Width Modulation (PWM), we can actually control the speed of the motors. Pulling these pins HIGH will make the motors spin, pulling it LOW will make them stop. ENA and ENB are used to turn ON, OFF and control speed of motor A and motor B respectively. The higher the duty cycle, the greater the average voltage being applied to the dc motor(High Speed) and the lower the duty cycle, the less the average voltage being applied to the dc motor(Low Speed).Д«elow image illustrates PWM technique with various duty cycles and average voltages. The average voltage is proportional to the width of the pulses known as Duty Cycle.

#L298N MOTOR DRIVER CIRCUIT DIAGRAM SERIES#

PWM is a technique where average value of the input voltage is adjusted by sending a series of ON-OFF pulses. A common technique for doing this is to use PWM (Pulse Width Modulation)

because without the driver Arduino canвЂ™t rotate the motor. The speed of a DC motor can be controlled by varying its input voltage. Arduino send an instruction to the motor driver as the electrical signal with 3.3v amplitude which is less to drive the motor, now we have to connect the L298N driver with the Motor. H-Bridge вЂ“ For controlling rotation direction.This can be achieved by combining these two techniques. In order to have a complete control over DC motor, we have to control its speed and rotation direction. One of the easiest and inexpensive way to control stepper motors is to interface L293D Motor Driver IC with Arduino.

L298n motor driver circuit diagram