ULN200XA Class Reference

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

Detailed Description

• ID: uln200xa
• Name: ULN200XA 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.

Example driving a stepper motor

        // Instantiate a Stepper motor on a ULN200XA Dual H-Bridge.
        // 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 uln200xa = new upm_uln200xa.ULN200XA(4096, 8, 9, 10, 11);

        uln200xa.setSpeed(5);
        System.out.println("Rotating 1 revolution clockwise.");
        uln200xa.setDirection(upm_uln200xa.ULN200XA.ULN200XA_DIRECTION_T.DIR_CW);
        uln200xa.stepperSteps(4096);

        System.out.println("Sleeping for 2 seconds...");
        Thread.sleep(2000);

        System.out.println("Rotating 1/2 revolution counter clockwise.");
        uln200xa.setDirection(upm_uln200xa.ULN200XA.ULN200XA_DIRECTION_T.DIR_CCW);
        uln200xa.stepperSteps(2048);

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

Classes
class	ULN200XA_DIRECTION_T

Public Member Functions
synchronized void	delete ()
	ULN200XA (int stepsPerRev, int i1, int i2, int i3, int i4)
long	getMillis ()
void	initClock ()
void	setSpeed (int speed)
void	setDirection (ULN200XA.ULN200XA_DIRECTION_T dir)
void	stepperSteps (long steps)
void	release ()

Constructor & Destructor Documentation

ULN200XA	(	int	stepsPerRev,
		int	i1,
		int	i2,
		int	i3,
		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

Member Function Documentation

long getMillis

(

)

Returns the number of milliseconds elapsed since initClock() was last called.

Returns

Elapsed milliseconds

void initClock

(

)

Resets the clock

void release

(

)

Releases the stepper motor by removing power

void setDirection

(

ULN200XA.ULN200XA_DIRECTION_T

dir

)

Sets the direction of the motor, clockwise or counterclockwise

Parameters

dir	Direction to set the motor to

void setSpeed

(

int

speed

)

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

Parameters

speed

Speed to set the motor to, in RPM

void stepperSteps

(

long

steps

)

Steps the stepper motor a specified number of steps

Parameters

steps

Number of steps to move the stepper motor

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

• /var/lib/jenkins/workspace/upm-doc-stable/build-33/src/uln200xa/ULN200XA.java