Schematics > Motor, light and power control > Stepper Motor Controller
Stepper Motor ControllerI 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.
Schematic
Parts
| Part |
Total Qty. |
Description |
Substitutions |
| R1, R2 ,R3, R4 |
4 |
1K 1/4W Resistor |
|
| D1, D2, D3, D4 |
4 |
1N4002 Silicon Diode |
|
| Q1, Q2, Q3, Q4 |
4 |
TIP31 NPN Transistor (See Notes) |
TIP41, 2N3055 |
| U1 |
1 |
4070 CMOS XOR Integrated Circuit |
|
| U2 |
1 |
4027 CMOS Flip-Flop |
|
| S1 |
1 |
SPDT Switch |
|
| MISC |
1 |
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.
Title: Stepper Motor Controller
Source: www.aaroncake.net
Published on: 2005-02-03
Reads: 811
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