How to build Stepper Motor Controller

this circuit diagram belongs to Control category.




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

Parts
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

Notes
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.

Author:
Email:
Website: http://www.aaroncake.net/

Similar diagrams

Economical Pump Controller circuit diagram
Economical Pump Controller
Emergency Light & Alarm circuit diagram
Emergency Light & Alarm
Metal Detector circuit diagram
Metal Detector
PWM Motor/Light Controller circuit diagram
PWM Motor/Light Controller
Magnetic-Radiation Remote-Control circuit diagram
Magnetic-Radiation Remote-Control
Stepper Motor Controller circuit diagram
Stepper Motor Controller
Everything-that-moves ALARM circuit diagram
Everything-that-moves ALARM
Touch Switch II circuit diagram
Touch Switch II
Important!!!
We are not responsible for any injuries or damage caused by information from this website! Working with electricity is dangerous for your life, especially diagrams related to high voltage! We do not guarantee success in building devices using our diagrams! They are not tested by us. For questions about diagrams use author info below diagram or our contact page. Thank you!