Electronic projects

you are here: home page :: projects :: Sensors & control :: other :: Stepper Motor Controller

Stepper Motor Controller

I found this circuit in my files. I don't know where it came from, but it looks like I photocopied it from somewhere years ago. I have been told that it came from "The Robot Builder's Bonanza", by Gordan McComb. Anyway, I thought that it should be fairly useful, so I decided to post it here. The circuit is very simple and inexpensive. This is good thing because most commercial stepper motor controller ICs are quite expensive. This circuit is built from standard components and can easily be adapted to be controlled by a computer. If you use cheap surplus transistors and stepper motor, the price of the circuit can be kept to under $10.

Circuit diagram

R1, R2 ,R3, R4 1K 1/4W Resistor
D1, D2, D3, D4 1N4002 Silicon Diode
Q1, Q2, Q3, Q4 TIP31 NPN Transistor (See Notes) or TIP41, 2N3055
U1 4070 CMOS XOR Integrated Circuit
U2 4027 CMOS Flip-Flop
S1 SPDT Switch
MISC Case, Board, Wire, Stepper Motor

1. You should be able to substitute any standard (2N3055, etc.) power transistor for Q1-Q4.
2. Every time the STEP line is pulsed, the motor moves one step.
3. S1 changes the motors direction.

web site: http://www.aaroncake.net/
project categories:
folder Audio (49)
folder Power & high voltage (43)
folder Radio (23)
folder Light & LED (31)
folder Tools & measurement (40)
folder Telephone (18)
folder Automotive (10)
folder Microcontrollers (12)
folder Sensors & control (47)
folder Timers & oscillators (40)
folder Miscellaneous (26)

StumbleUpon button

Share this page
Bookmark and Share
project subcategories:
All subcategories
light controlled
temperature controlled
moisture controlled
sound controlled

similar projects:
73 MHz Hallogene Lamp Radio-Controlled
Air Flow Detector
Capacitive Sensor
DC Motor Control Circuit
DC Motor Reversing Circuit
Door Alarm
Economical Pump Controller
Emergency Light & Alarm
Everything-that-moves ALARM
Magnetic-Radiation Remote-Control

recently added projects:
Doorbell for the Deaf
High Quality Intercom
Combinational Conjuring Trick
Ultrasonic Dog Whistle
Quiz Circuit
LED Torch
Insect Repellant
Speaker Microphone Circuit
Magic Wand Conjuring Trick.

most popular projects:
Led display digital Voltmeter
500W low cost 12V to 220V inverter
Low pass filter - Subwoofer
Metal Detector
High And Low Voltage Cut Off With Time Delay
Basic UPS Power Supply
2N3055 Power Amplifier
200W audio amplifier
LED Torch
100W RMS Amplifier

DIY Electronics Projects

Promote Your Page Too