Datasheet

The connection between 24BYJ48 Stepper Motor and I2C Motor Driver is shown as blow:

Download the Grove-I2C motor driver V1.3 demo code, and open the StepperControlMode2.ino:

#include <Wire.h>

#define MotorSpeedSet 0x82

#define PWMFrequenceSet 0x84

#define DirectionSet 0xaa

#define MotorSetA 0xa1

#define MotorSetB 0xa5

#define Nothing 0x01

#define EnableStepper 0x1a

#define UnenableStepper 0x1b

#define Stepernu 0x1c

#define I2CMotorDriverAdd 0x0f // Set the address of the I2CMotorDriver

// set the steps you want, if 255, the stepper will rotate continuously;

void SteperStepset(unsigned char stepnu)

{

Wire.beginTransmission(I2CMotorDriverAdd); // transmit to device I2CMotorDriverAdd

Wire.write(Stepernu); // Send the stepernu command

Wire.write(stepnu); // send the steps

Wire.write(Nothing); // send nothing

Wire.endTransmission(); // stop transmitting

}

.......

void stepperrun()

{

Serial.println("sent command to + direction, very fast");

SteperStepset(255);

StepperMotorEnable(1, 1);// ennable the i2c motor driver a stepper.

delay(5000);

Serial.println("sent command to - direction, slow");

SteperStepset(255);

StepperMotorEnable(0, 20);