Stepper Motor Controlling Using ULN2003

The ULN2003 internally employs high voltage, high current darlington arrays each containing seven open collector darlington pairs with common emitters. Each channel rated at 500mA and can withstand peak currents of 600mA. Suppression diodes are included for inductive load driving and the inputs are pinned opposite the outputs to simplify board layout. ULN2003A is of 5V TTL, CMOS. These versatile devices are useful for driving a wide range of loads including solenoids, relays DC motors, LED displays filament lamps, thermal printheads and high power buffers. The ULN2003A are supplied in 16 pin plastic DIP packages with a copper leadframe to reduce thermal resistance.

 

Some important features of ULN2003A:

 

  • Seven DARLINGTONS per package
  • output current 500mA per driver (600mA peak)
  • Output voltage 50V
  • integrated suppression integrated suppression diodes for inductive loads
  • Outputs can be paralleled for higher current
  • TTL/CMOS/PMOS/DTL compatible inputs
  • Inputs pinned opposite outputs to simplify layout

 

ULN2003 

Stepper motors can be classified into 2-

Unipolar and Bipolar

Here we will discuss how Bi-polar Stepper motor can be interfaced with micro controller. The Bipolar Stepper motor has 2 coils.  The coils are identical and are not electrically connected. You can identify the separate coils by touching the terminal wires together-- If the terminals of a coil are connected, the shaft becomes harder to turn.

 

 

How to interface Bipolar Stepper motor???

Terminal 1a is positive and 1b is negative, the rotor points to the East in this diagram.  If these two terminals were reversed in polarity the rotor would point to the West.  Coil 2 is entirely de-activated in the diagram. In a basic Wave Drive clockwise sequence, winding 1 is de-activated and winding 2 activated to advance to the next phase. The rotor is guided in this manner from one winding to the next, producing a continuous cycle.  Note that if two adjacent windings  are activated, the rotor is attracted mid-way between the two windings. The diagram below shows, how to interface stepper motor with ULN2003 and ULN2003 to the microcontroller.

 

The Pins 1 to 4 of ULN2003 is connected to the microcontroller pins. Through Pins 13 to 16 of ULN 2003, Stepper motor draws the control sequence for the sake of rotation. Pin 9 is common and 8 is ground. The sequence 0011 (03H),0110 (06H),1100 (0CH),1001 (09H) provides maximum torque in a two phase configuration. This sequence energizes two adjacent phases, which offers an improved torque-speed product and greater holding torque.

 

The Example program in PIC for interfacing Stepper motor

 

#include"pic.h"

#include"delay.h"

void main()

{

int a[4]={0X03,0X06,0X0C,0X09};

int b[4]={0X09,0X0C,0X06,0X03};

int i;

TRISD=0X00;

for(i=0;i<=4;i++)

{

PORTD=a[i];

DelayMs(5);

}

DelayMs(2);

for(i=0;i<=4;i++)

{

PORTD=b[i];

DelayMs(5);

}

}

 

In the above program the stepper motor will rotate in Clockwise direction and then in anticlockwise and the sequence will continue.

- HARI KRISHNAN

Comments

Member since:
7 August 2017
Last activity:
1 week 2 days

kanye west shoes

michael kors bags

ua shoes

ray ban erika

prada handbags

payless shoes online

official kate spade website

coach outlet online

pandora rings

pandoracharms

pandora rings uk

Coach Sunglasses Outlet

balenciaga outlet

Engagement Rings - Official

Nike Air Max 180

official michael kors

Ray Ban sunglasses

shoes sale

Nike Air Max

Air Max 180

burberry outlet

Dreamland Jewelry - Official

birkenstock sandals

birkenstock

Nike Air Max Couple

coach outlet online

prada outlet online

louis vuitton outlet online

Nike Air Jordan

gel kayano

official michael kors

michael kors outlet bags

Hugo Boss Store

payless shoes

Premier Jewelry - Official

ray ban outlet

Coach Handbags

pandora sale

coach watches

nike store

football jerseys

louis vuitton outlet online

coach outlet online sale

Add Your Link Free

backlink

louis vuitton us

michael kors

Nike Air Jordan Enfants

michael kors

Michael Kors Handbags Outlet Sale

kate spade outlet online

Green Cleaned

ugg boots

sunglasses

Nike Blazer Femmes

evbid

Wine

coach outlet

birkenstock outlet

Burberry Australia

payless near me

Chanel Outlet

north face sale

Nike Air Max

Prada Shoes - Official

michael kors outlet

ray ban wayfarer sunglasses

Oakley Sunglasses

puma sneakers outlet

payless shoes

nike free shoes

diesel watches

burberry outlet canada

prada sale

puma sneakers sale

louis vuitton outlet

Air Max 180 Homme

Jewelry Armoire - Official

coach handbags sale

Hermes Outlet

timberland shoes

Nike Air Max 2017

coachs outlet

louis vuitton outlet online

Nike Jordans

football jerseys

burberry outlet sale

Nike Free 3.0

michael kors outlet online

ray ban wayfarer

ray ban sunglasses

Rolex Watch

michael kors

michael kors

nike huarache shoes

ray ban sale

Adamson

pandora necklaces

kate spade italy

coach australia

pandora uk

pandora uk

swatch watch

michael kors watches

michael kors

rayban prescription sunglasses

Brighton Jewelry - Official

prada outlet online

Nike Air Force

michael kors outlet

fulam shoes

softball jerseys

Nike Air Max

balenciaga us

Air Max 1 Homme

michael kors

Watches

Air Jordan Enfant

chrome store canada

sunglasses store

coach outlet

michael kors outlet

Nike Free Run

mk outlet online

michael kors outlet

the beat

seiko watches

michael kors

Lifestyle

Air Max 90 Femme

hermes outlet

Nike Air Jordan enfants

hermes outlet

prada purses

kate spade outlet

nike jordan shoes

me adc8.7

Member since:
7 July 2017
Last activity:
5 weeks 5 days

2017.7.7yangping

coach outlet

moncler

mbt shoes

cheap jerseys from china

christian louboutin shoes

coach outlet online

kate spade

michael kors outlet clearance

nike free run flyknit

marc jacobs bags

fit flops

coach factory outlet

kate spade handbags

kd 9 shoes

cheap oakley sunglasses

nike air max 90

chi flat iron

kate spade outlet

longchamp handbags

hermes bags

ralph lauren outlet

coach outlet

salomon shoes

burberry outlet store

coach outlet online

christian louboutin sale

michael kors outlet

polo outlet

coach outlet online

nike free flyknit

air max

nike store

louboutin uk

houston texans jerseys

coach outlet

coach factory outlet

coach factory outlet

louis vuitton outlet

air jordan retro

levis jeans

polo ralph lauren outlet online

oakley sunglasses

moncler outlet

mont blanc

adidas nmd

true religion outlet

fit flops

steph curry shoes

cheap jordans

ralph lauren pas cher

michael kors outlet clearance

fitflops sale clearance

cheap nike shoes

coach outlet store

pandora charms sale

coach outlet

mont blanc pens

cheap mlb jerseys

coach factory outlet

ralph lauren outlet online

michael kors outlet online

birkenstock pas cher

coach factory outlet online

cheap nfl jerseys wholesale

polo ralph lauren outlet online

toms shoes outlet

pandora charms sale clearance

air jordans

ed hardy

ed hardy clothing

pandora charms

mont blanc pens

adidas superstar

mulberry purse

nike shoes for men

nike air max outlet

nike store

true religion

hermes handbags

celine outlet

cheap ray ban sunglasses

oakley sunglasses

ralph lauren sale clearance

adidas yeezy

borse gucci

louis vuitton handbags outlet

fitflops

michael kors bags

true religion jeans

louis vuitton outlet

oakley sunglasses

christian louboutin sale

christian louboutin

doudoune moncler

michael kors outlet

michael kors outlet clearance

versace shoes

louis vuitton outlet online

coach outlet

mulberry handbags

columbia shoes

pandora jewelry outlet

red bottoms shoes

ralph lauren

yeezy boost 350

pandora outlet

birkenstock sandals

christian louboutin

coach outlet

nike air max

parker pens

longchamp bags

vans shoes

yeezy boost

ralph lauren sale clearance

birkenstocks

nike roshe run

hollister clothing store

adidas pas cher

dansko sandals

discount oakley sunglasses

oakley sunglasses

hermes handbags

adidas yeezy

adidas yeezy

polo ralph lauren

james harden shoes

ralph lauren uk

hermes birkin

pandora

coach outlet

mlb jerseys cheap

true religion outlet

longchamp uk

coach outlet store online clearances

fendi handbags

rolex replica

sac longchamp pas cher

michael kors outlet

coach outlet

dansko shoes

dansko outlet store

gucci outlet

nike air max

christian louboutin outlet

wholesale nike shoes

adidas shoes

coach bags

jordan shoes

kate spade outlet

sac longchamp

nike outlet

coach factory outlet

coach factory outlet

tory burch outlet

ray ban sunglasses

birkenstock shoes

ralph lauren uk

vans outlet store

nike shoes

oakley sunglasses

adidas nmd

ralph lauren outlet

coach outlet

michael kors outlet clearance

adidas yeezy

tory burch outlet

michael kors uk

birkenstock sandals

cheap jordans

birkenstocks

clarks outlet

christian louboutin outlet

salomon shoes outlet

rolex replica watches

new england patriots jerseys

ray ban sunglasses discount

ralph lauren uk

fred perry polo

yeezy boost 350 v2

cheap mont blanc

rolex watches

swarovski crystal

true religion jeans

sac michael kors

fitflops

birkenstock shoes

ralph lauren sale clearance

cheap nfl jerseys

coach outlet

jimmy choo

mbt shoes

michael kors handbags

michael kors outlet

coach factory outlet

coach factory outlet

oakley sunglasses outlet

adidas yeezy

ralph lauren outlet

sac longchamp pas cher

coach outlet

adidas shoes

adidas shoes

ralph lauren outlet

michael kors handbags

oakley sunglasses outlet

louboutin pas cher

pandora jewelry

hermes outlet

hermes handbags

polo ralph lauren outlet

gucci outlet

pandora outlet

coach outlet

fitflops

clarks outlet

coach outlet

michael kors

cheap jerseys

kevin durant shoes

valentino shoes outlet

kate spade outlet store

tods outlet

birkenstock sandals

nike shoes

burberry outlet canada

cheap jordan shoes

coach factory outlet

red bottoms

michael kors outlet online

jordan shoes

louboutin

toms shoes

adidas uk

golden state warriors jerseys

cheap jordans

mulberry outlet

pandora bijoux

adidas superstar

michael kors outlet

cheap oakley sunglasses

coach factory outlet

ralph lauren uk

ed hardy

pandora jewelry

pandora uk

coach outlet

coach factory outlet

fendi handbags

tory burch outlet store

adidas superstar shoes

adidas nmd

pandora bracelet

dolce and gabbana outlet

yeezy boost 350

longchamp handbags

yeezy boost

coach factory outlet

cheap nike air max

adidas outlet

ralph lauren

nike outlet online

adidas superstar

polo ralph lauren

polo ralph lauren

louboutin chaussures

coach outlet store

supra shoes

polo ralph lauren

adidas yeezy boost 350

nike free 5.0

giuseppe zanotti outlet

pandora charms

fake rolex

louis vuitton outlet store

michael kors handbags

air jordan uk

polo outlet

nike shoes outlet

michael kors canada

coach factory outlet

pandora jewelry

pandora charms uk

oakley sunglasses

coach outlet

adidas shoes

yeezy boost

cat shoes

dallas cowboys jerseys

clarks shoes

fred perry

sac longchamp pliage

nike outlet store

toms outlet

christian louboutin outlet

nike outlet

coach outlet

air max 95

nmd adidas

swarovski jewellery

jordans

mbt shoes

fitflops sale clearance

ralph lauren outlet

kate spade handbags

fitflops

michael kors canada

cheap jordans

nike air max

official coach factory outlet

longchamp bags

toms shoes outlet

moncler jackets

michael kors outlet

marc jacobs handbags

birkenstock sandals

nmd adidas

burberry sale

coach handbags

adidas shoes

pandora uk

mlb jerseys wholesale

michael kors outlet

ecco shoes

pandora jewelry

coach outlet

moncler outlet

michael kors handbags

celine outlet store

pandora jewelry

swarovski crystal

ultra boost

true religion jeans

coach factory outlet online

nmd shoes

nmd adidas

birkenstock outlet

polo ralph lauren

seattles eahawks jerseys

polo ralph lauren

coach outlet

mont blanc

cheap jordans

louboutin shoes

kate spade handbags

coach outlet store

cheap mlb jerseys

ray ban sunglasses

coach outlet store

oakley sunglasses

polo ralph lauren outlet online

adidas uk

longchamp uk

adidas outlet

fitflops shoes

nike air max 90

air max 2017

cheap ray bans

coach factory outlet

mulberry bags

salomon shoes

longchamp outlet store

cheap jordans

cheap mlb jerseys

nike air max

under armour shoes

valentino shoes

adidas shoes

ray ban sunglasses

coach outlet

nike outlet

michael kors outlet

hollister co

discount ray ban sunglasses

nike factory store

red bottoms

adidas yeezy boost

louis vuitton handbags

christian louboutin

rolex replica watches

michael kors uk

kate spade outlet

fitflops uk

burberry outlet

true religion outlet

pandora soldes

christian louboutin shoes

yeezy boost 350

louis vuitton outlet

parada handbags

burberry outlet

columbia outlet online

coach factory outlet

coach outlet store online

michael kors outlet

coach outlet

cveland cavaliers jerseys

polo ralph lauren outlet

yeezy 350 boost

louis vuitton outlet

pandora charms

ray ban sunglasses

christian louboutin

miami heat jerseys

ralph lauren sale clearance

fred perry

kate spade outlet

adidas shoes

rolex watches

adidas nmd

nike roshe

coach outlet

birkenstock sandals

valentino

rayban

dansko outlet

christian louboutin outlet

cheap nfl jerseys

clarks shoes

timberland boots

ralph lauren outlet

pandora charms

nike air max 90

replica watches

ralph lauren outlet online

cheap jordans

mulberry handbags

adidas trainers

red bottoms shoes

longchamp outlet

pandora outlet

pandora charms

ralph lauren clearance

oakley sunglasses

yeezy boost 350

cheap jordans free shipping

longchamp outlet

adidas superstar

michael kors outlet online

michael kors outlet clearance

michael kors handbags

burberry outlet online

mulberry uk

michael kors outlet

pandora charms

moncler jackets

kate spade handbags

michael kors outlet

toms shoes

michael kors uk

tods shoes

ysl handbags

coach outlet store

michael kors

coach outlet store

coach canada

giuseppe zanotti sneakers

coach outlet

nike air max pas cher

nike air max

adidas outlet

nike free run black

longchamp uk

denver broncos jerseys

cheap oakley sunglasses

michael kors handbags

adidas nmd

adidas outlet

pandora jewelry

yeezy boost

prada outlet

longchamp handbags

fitflops

fitflop sandals

coach outlet store

yeezy boost 350

nike store

Member since:
15 March 2009
Last activity:
8 years 1 week

can you provide the code for AVR controller