ULN200XA Class Reference

UPM module for the ULN200XA Darlington Stepper Driver. More...

Detailed Description

• ID: uln200xa
• Name: Darlington Stepper Driver
• Other Names: ULN2001A ULN2002A ULN2003A ULN2004A
• Category: motor
• Manufacturer: seeed
• Link: http://www.seeedstudio.com/depot/Gear-Stepper-Motor-with-Driver-p-1685.html?cPath=39_40
• Connection: gpio

This module was developed on a ULN2003A Stepper Driver. It should also support the ULN2001A, ULN2002A, and ULN2004A devices, when using to drive the 28BYJ-48 unipolar stepper motor.

Vcc goes to the 5V pin on your development board and the Vm pin should be connected to an external 5V supply.

Example driving a stepper motor

    // Instantiate a Stepper motor on a ULN200XA Darlington controller.

    // This was tested with the Grove Gear Stepper Motor with Driver

    // Wire the pins so that I1 is pin D8, I2 is pin D9, I3 is pin D10 and
    // I4 is pin D11
    upm::ULN200XA uln200xa(4096, 8, 9, 10, 11);

    uln200xa.setSpeed(5);
    uln200xa.setDirection(ULN200XA_DIR_CW);
    cout << "Rotating 1 revolution clockwise." << endl;
    uln200xa.stepperSteps(4096);
    cout << "Sleeping for 2 seconds..." << endl;
    upm_delay(2);
    cout << "Rotating 1/2 revolution counter clockwise." << endl;
    uln200xa.setDirection(ULN200XA_DIR_CCW);
    uln200xa.stepperSteps(2048);

    // turn off the power
    uln200xa.release();

Public Member Functions
	ULN200XA (int stepsPerRev, unsigned int i1, unsigned int i2, unsigned int i3, unsigned int i4)
	~ULN200XA ()
void	setSpeed (unsigned int speed)
void	setDirection (ULN200XA_DIRECTION_T dir)
void	stepperSteps (unsigned int steps)
void	release ()

Protected Attributes
uln200xa_context	m_uln200xa

Constructor & Destructor Documentation

ULN200XA	(	int	stepsPerRev,
		unsigned int	i1,
		unsigned int	i2,
		unsigned int	i3,
		unsigned int	i4
	)

ULN200XA constructor

Parameters

stepsPerRev	Number of steps per full revolution
i1	Digital pin to use for stepper input 1
i2	Digital pin to use for stepper input 2
i3	Digital pin to use for stepper input 3
i4	Digital pin to use for stepper input 4

~ULN200XA

(

)

ULN200XA destructor

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Member Function Documentation

void setSpeed

(

unsigned int

speed

)

Sets the speed of the stepper motor in revolutions per minute (RPM)

Parameters

speed

Speed to set the motor to, in RPM

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void setDirection

(

ULN200XA_DIRECTION_T

dir

)

Sets the direction of the motor, clockwise or counterclockwise

Parameters

dir	Direction to set the motor to

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void stepperSteps

(

unsigned int

steps

)

Steps the stepper motor a specified number of steps

Parameters

steps

Number of steps to move the stepper motor

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void release

(

)

Releases the stepper motor by removing power

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Collaboration diagram for ULN200XA:

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The documentation for this class was generated from the following files:

• src/uln200xa/uln200xa.hpp
• src/uln200xa/uln200xa.cxx