Skip to main content

Motor Shield V1.0

The Motor Shield is a perfect platform for robotics and mechanical applications. It enables the Arduino to drive two brushed DC motors or one 4-wire two-phase stepper motor. Based on the H-bridge driver Chip L298N motor driver integrated circuit, it requires a 6V to 15V power supply to power the motor and also includes an on-board 5V voltage regulator for powering the main Arduino board. Additional plug and play Grove sensors can be connected to the 13 on-board Grove connectors.

Model: SLD80256P


  • Standard Arduino compatible

  • Pulse-width modulated speed control mode

  • 4 direction indicator lights

  • Compatible with Grove plug and play sensors

  • Extra large heat sink helps handle big loads

  • Supports up to 14 servos


The Driver IC and Heat sink may become very hot when working with current more than 1000mA.


Logic Control Voltage4.555.5V
Motor Supply Voltage6/15V
Output Voltage0/Vinput -1V
Output Current( For Each Channel)//2000mA
Output Duty range0%~100%/
Net Weight37g
  • Recommend maximum duty <50% at full load

Interface Function

External Power Jack: External Power supply for Motor Shield.

Motor Interface: Out 1 and Out 2(Out 3 and Out 4) can connect Motor A(B) for DC Motor.

Enable Motor A Connector: Connect above two interfaces with a jumper cap when driving the DC motor A.

Enable Motor B Connector: Connect below two interfaces with a jumper cap when driving the DC motor B.

Supply Power Select Connector: USB/Extern Power can supply for driving the Motor. When connect the connector using a jumper cap, the USB power for the motor shieled.

The following table describes Motor A/B indicator LEDs.

IN1_redlights when motor A turns clockwise, out1 pin outputs high level
IN2_greenlights when motor A turns counterclockwise, out2 pin outputs high level
IN3_redlights when motor B turns clockwise, out3 pin outputs high level
IN4_greenlights when motor B turns counterclockwise, out4 pin outputs high level
Pin NameDirectionConnection to ArduinoDescription
VCC/VCCPower supply selector
VS, GND//Power Supply for Motor, 6V - 15V
EAInputD9TTL Compatible Enable Input of Bridge A
EBInputD10TTL Compatible Enable Input of Bridge B
IN1InputD8TTL Compatible Inputs of the Bridge A
IN2InputD11TTL Compatible Inputs of the Bridge A
IN3InputD12TTL Compatible Inputs of the Bridge B
IN4InputD13TTL Compatible Inputs of the Bridge B
M1-, M1+Output/Outputs of the Bridge A
M2-, M2+Output/Outputs of the Bridge B


Hardware Installation

Connect DC motor to the motor shield Output Pins M1+& M1-(M2+& M2-), if using a 4-wire stepper motor, make sure the 4 Pins are correctly connected. Connect the drive voltage (The required voltage depends upon the motor used. Refer to the motor datasheet) to the Power supply terminals.

With the jumper J4 inserted, Arduino can be powered by the drive voltage via an on-board voltage regulator, which regulates the drive voltage to 5v.


Download the Motor shield Demo code and open the Motor_shield_demo_code sketch. Select the corresponding Arduino board in tools-boards and serial port in tools-serial port. Upload the sketch to your arduino board, then you would found the 2 motors begin to work. If you power the motor shield via the power terminal and the power jumper J4 was inserted, you can remove the USB cable now.

Speed control is achieved through conventional PWM which can be obtained from Arduino's PWM output D9(EA) and D10(EB). Using the function analogWrite() to generate the drive PWM:

int speedpinA=9;//enable motor A
int speedpinB=10;//enable motor B
int speed =127;//define the speed of motor
analogWrite(speedpinA,speed);//AnalogWrite to Generate PWM to control the motor speed

And Set the Digital D8(IN1) and D11(IN2) to control the motor attached to OUT1/2, while digital D12(IN3) and D13(IN4) to control motor attached to OUT3/4.

int pinI1=8;//define I1 interface
int pinI2=11;//define I2 interface
digitalWrite(pinI2,HIGH);//turn DC Motor A move clockwise

Follows the logic between EA(B) and INx with motor motion:

EA(B)IN1(IN3)IN2(IN4)Motion of MotorA(B)
SEEED Studio Stepper Motor Control - one revolution

Adapts the Stepper example for use with the SEEED STUDIO motor shield.
This program drives a unipolar or bipolar stepper motor
by using the included Stepper library of the Arduino.
The motor is attached to the Seeed Studio motor shield and an Arduino.

The digital pins 8,11,12,13 drive the L298N and are used when creating the stepper object
Digital pins 9 and 10 must be high to enable the chip.

The motor should revolves one revolution in one direction, then
one revolution in the other direction.

Created 11 Mar. 2007
Modified 30 Nov. 2009
by Tom Igoe
Modified 4 July 2012
By R. Dumouchelle


#include <Stepper.h>

const int stepsPerRevolution = 200; // change this to fit the number of steps per revolution
// for your motor

// initialize the stepper library on pins 8 through 11:
Stepper myStepper(stepsPerRevolution, 8,11,12,13);

void setup() {
// set the speed at 60 rpm:
// initialize the serial port:

void loop() {
// step one revolution in one direction:

step one revolution in the other direction:

Version Tracker

v1.0V1.0 Release2012/3/29

Motor Shield V2.0 Demo

This is a recipe about how to control motors individually with the Seeedstudio 2.0 motor shield.

I want to make it.

Schematic Online Viewer


Tech Support & Product Discussion

Thank you for choosing our products! We are here to provide you with different support to ensure that your experience with our products is as smooth as possible. We offer several communication channels to cater to different preferences and needs.

Loading Comments...