# Stepper Motor - Use It Cheapest and Easyest

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## Introduction: Stepper Motor - Use It Cheapest and Easyest

Unknown stepper motor wiring

i found an old stepper motor with unknown wiring

12V
0,4A
7,5 degrees/step
50 mH

colors of cables are
1. Blue (1)
2. Red
3. Green
4. Blue (2)
5. Black
6. White

so I need to understand what is this and if it works to run it and use.

## Step 1: Measure

so we need to find
1. multimeter (Ohm meter)
2. 12 V power supply

now we have 6 wires
we are sure that it is safe to measure ohms between wires
I make a table

1.Blue (1)
2. Green
3.Black
4.Blue(2)
5.Red
6.White

with multimeter measure Ohm resistance between wires
1 to 2 = 39
1 to 3 = 39
1 to 4 = *
1 to 5 = *
1 to 6 = *
2 to 3 = 78
2 to 4 = *
2 to 5 = *
2 to 6 = *
3 to 4 = *
3 to 5 = *
3 to 6 = *
4 to 5 = 39
4 to 6 = 39
5 to 6 = 78

## Step 2: Understand What We Measure

here we understand that
between
1 and 2 we have 39 Ohm
1 and 3 we have 39 Ohm
2 and 3 we have 78 Ohm

It is easy to decide that

(A+) - 39 - (A) - 39 - (A-)
(B+) - 39 - (B) - 39 - (B-)

Group A
Common: 1
phases: 2 3

Group B
Common: 4
phases: 5 6

## Step 3: Test

after this you need to test

Here you need 12 V power supply
! if you use only 12V it is safe for you and for motor

to turn in Clock Wise direction
12V (-) to blue and blue (connect them)

! here you give 12V for 1 second and you will see haw motor turns at 7.5 degrees
after that give to second wire and so on

12V (+) to
Green,
Black,
Red and
White

if you need to use it for something you can make
turning switch with 4 contacts

Gr || || Blck
O <---- 12V (+)
Red || || White

connect (||) to Green, Black,Red and White
and 12V (+) to (O)
blue both connect to 12V (-)

The easy way to connect stepper motor and use.
:)

## Recommendations

• ### Large Motors Class

8,837 Enrolled

• ### Oil Contest

We have a be nice policy.

## Questions

hello thank you for advice i have some difficulties with this instructable 1. my camera is web camera with poor quality and I have no other so i can make better images 2. my mother language is different from English and a have some spelling and grammar errors, but if you or somebody make correction I'll be happy except this i will try to upgrate this project :)

The bottom of the motor sais actually Russian for stepper motor.

3 replies

not Russian for sure
I'm Bulgarian citizen, know Russian language and our alphabets are very close but little different
(ИЗОТ) is Bulgarian manufacturer of equipment
http://www.bic-izot.com/project_02/project.html (here you can see name ИЗОТ and Bulgarian flag)
and a lot more
on russian language is

# Шаговый электродвигатель

(http://ru.wikipedia.org/wiki/%D0%A8%D0%B0%D0%B3%D0%BE%D0%B2%D1%8B%D0%B9_%D1%8D%D0%BB%D0%B5%D0%BA%D1%82%D1%80%D0%BE%D0%B4%D0%B2%D0%B8%D0%B3%D0%B0%D1%82%D0%B5%D0%BB%D1%8C)
and on Bulgarian is Стъпков двигател

Russians my first language, and the site is in Russian or are Russian and Bulgarian so alike?

yes :)
some years ago Bulgaria was big manufacturer of electronic equipment and sale it to USSR and all socialist market. Maybe you know these stepper motors.
About languages i think you can understand most of bulgarian words without dictionary :)
greetings by Drago