Drive Stepper Motor | Electronic Project Circuits

Posts Tagged ‘drive stepper motor’

Stepper Motor Driver by 74194

Probably the simplest, reversible drive circuit is the H-Bridge. Some BEAMbots use H-bridge motor drivers; many more use an H-bridge variant of some sort. Here’s a simple conceptual schematic: Image Based on the SN74LS194 – Bidirectional Universal Shift Register the circuit is designed to drive UNIPOLAR type stepper motors and provides only basic control functions – Forward, Reverse, Stop and Speed adjustment. The only step angle for this driver is the design step angle for the motor. The circuit is not complex and is cheaper than many dedicated driver/controller devices and the parts are easy to find.

Simple Stepper Motor Controller by 4027 , 4070

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.

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.

Read More Source:www.aaroncake.net
Thank you.