ARDUINO L298 DUAL DC MOTOR SHIELD

This motor drive shield sits right on Arduino Uno/

Mega/ Leonardo and allows driving two DC motors.

It uses a SMD L298P motor driver IC. Motor

speed control is achieved by conventional PWM

which can be obtained from Arduino’s PWM output

Pins. The enable/disable function of the L298P IC is

controlled by an Enable switch placed on this shield.

Motor direction indicating LEDs give visual signal

of how the arduino controls the motors and eases

programming. There’re also three power rails on this

shield that makes it a small power distribution board.

You can attach other Arduino shields (that doesn’t

use Arduino pins 2-7) on top of it.

• Up to 2 DC motors can be controlled

• Logic Control Voltage：5V (From Arduino).

• Motor Driven Voltage：4.8～35V (From

Arduino or External Power Source).

• Logic supply current：≤36mA.

• Motor Driven current：≤2A (per motor).

• Maximum power consumption：25W（T=75℃).

• Arduino pins needed for motor control: 6 (3 for

each motor)

• Option to Enable/ Disable motor driver

• 4 LEDs for indicating direction of motor

rotation.

• 3 sets of power rails for Vin, 5V and GND

A Closer Look at the Shield Motor Connectors: Terminal block

connectors for attaching DC motors. Connect

two wires of your DC motor to OUT1 &

OUT2. Two wires of another DC motor can

be connected to OUT3 & OUT4.

Arduino Vin Jumper pins: Lets you

short Arduino Vin pin & L298 VIN pin and

power up the motors from Arduino Vin

(barrel connector). Never put a jumper here if

you are about to connect separate voltage

sources to L298 voltage input port and

Arduino Vin pin (or barrel connector) as it’ll

short them.

L298 Voltage Input: For providing supply

voltage to the motors using wires. If you are

using separate power sources for the Arduino

and the motors, connect both VIN and GND.

Enable LED & Enable Switch: to

enable/ disable the L298 IC. The LED shows

Enable/Disable status. When disabled, even if

supply voltage source is connected, the

motors won’t run.

Direction Indicator LEDs: Indicates

direction of motor rotation.

Power Rails: 3 sets of power rails for Vin,

5V and GND. Note that they are OUTPUT

pins. Don’t provide any input voltage to

these pins.

METHOD 1

1. Short Arduino Vin and L298 Vin with

a computer jumper.

2. Connect your power source to Arduino

barrel connector. This will power up

both the Arduino and the L298 IC.

3. Don’t connect any other power source

to blue VIN port of the shield.

4. Connect only small motors (that draws

a small amount of current) like this or

this or Pololu micro metal gear motors

if using this method.

Providing Power to Arduino & Motors

1

2

3

4 4

METHOD 2

1. Short Arduino Vin and L298 Vin with a

computer jumper.

2. Connect your power source to the blue

VIN port of the shield. This will power

up both the Arduino and the L298 IC.

3. Don’t connect any other power source to

Arduino barrel connector or Arduino

Vin pin.

4. You can connect comparatively big

motors (that draws up to 2A current)

like this if using this method.

1

2

3

METHOD 3

1. Follow this method only if you want to provide separate power sources to Arduino and L298.

2. Connect your power source for motors to the blue VIN port of the shield.

3. Connect the other power source for Arduino to Arduino barrel connector or Arduino Vin pin.

4. Never put a jumper on Arduino Vin Jumper pins if following this method as it will short your power sources.

#define in1 7

#define ena 6

#define in2 5

#define in3 4

#define enb 3

#define in4 2

void setup()

{

pinMode(in1,OUTPUT);

pinMode(in2,OUTPUT);

pinMode(in3,OUTPUT);

pinMode(in4,OUTPUT);

pinMode(ena,OUTPUT);

pinMode(enb,OUTPUT);

}

void loop()

{

// both motors run at full speed

digitalWrite(in1,HIGH);

digitalWrite(in2,LOW);

analogWrite(ena, 255);

digitalWrite(in3,HIGH);

digitalWrite(in4,LOW);

analogWrite(enb, 255);

delay(2000);

// both motors run in reverse direction at half speed

digitalWrite(in2,HIGH);

digitalWrite(in1,LOW);

analogWrite(ena, 120);

digitalWrite(in4,HIGH);

digitalWrite(in3,LOW);

analogWrite(enb, 120);

delay(2000);

}

Contact technicalsupport@techshopbd.com if you

have any query, complain or development suggestion

about this product.

Arduino pin L298 Pin

2 IN4

3 ENB

4 IN3

5 IN2

6 ENA

7 IN1

CIRCUIT CONNECTION

This shield uses Arduino pin 2-7. You can

attach another Arduino shield (that doesn’t

use those pins) on top of this shield.

TEST CODE