interfacing stepper motor to microcontroller - KIT - ECE

INTERFACING STEPPER MOTOR TO MICROCONTROLLER

CIRCUIT DIAGRAM:
R

IC ULN 2004
µ
P2.0 21


1 16
C O
P2.1 22
8

2 15

0
Y
P2.2 23
5
3 14


1
P2.3 24 G
4 13


Stepper
Motor
1K Ω LED




B

+12
+9v
8 9
(i) V
c
Gnd
c




Port specification:

PORTS INPUT OUTPUT
P 2.0-2.3 Step Sequence
-