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stepper motor drivers

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PTsideshow:
Not exactly what you where asking but here are some sites with stepper motor info!
Stepper Motor Interface
http://www.geocities.com/nozomsite/stepper.html
All about motion control by viewing Galil's informative on-line tutorials.
http://www.galilinmotion.com/tutorials.php
Stepper motor applications - drivers
http://www.educypedia.be/electronics/motorstepdriver.htm
UNIPOLAR and BIPOLAR Stepper Motor Drivers (74194)
http://home.cogeco.ca/~rpaisley4/Stepper.html
More stuff
http://pminmo.com/
PICStep Microstepping Controller
http://www.fromorbit.com/projects/picstep/index.php

These are good for most applications and the kinds you can find, remove or pick up places!
 :dremel:

Gerhard Olivier:
http://www.quasarelectronics.com/3094-rotary-unipolar-stepper-motor-driver.htm

This is what I think i want.  If it is what i think it is.  Thats to say it may be something else entirely!!!!!!

My thinking in this is if I use a stepper motor the motor and mount can stay if this later becomes a cnc conversion. If I use a wiper motor or such it needs to be comepletely redone.  :scratch:

If it is what I think it is and is what i want, I can't have it as they stopped making the bits for it?????Here's hoping that someone that understands these things reads this.

Gerhard.

Jadecy:
My suggestion would be to buy a ready to go stepper driver unit like the Gecho G540 and just drive the channels with a few electronics to give manual control. Let me explain a little. The G540 coupled with a good power supply for the motors gives you all the electronics to drive steppers from a parallel port. The parallel port pins on the G540 can be driven directly with TTL logic voltages of +5 and ground. No need for a computer at all.

The driver panel I would suggest would contain a 555 timer (ubiquitous 8 pin integrated circuit) which is easily configureable to be a square wave oscillator to provide the pulses to the controller. The frequency can be controlled by a potentiometer to adjust speed of the stepper motor. Use a nand logic gate (cheap integrated circuit) to isolate 2 push buttons from the circuit. One push button for direction, the other coupled with the oscillator to make the motor go. Use a 7805 ic (+5 volt regulator) to provide the voltage. You could use a 9v battery to power the whole thing. The controller board has a ground pin in the parallel port connector that you need to make common with the ground on the contrtoller board.


I will try to draw the basic circuit up and post it.

Jadecy:
Here is the circuit I was trying to describe. The 555 acts as the pulse generator and the "move" switch controls whether those pulses make it to the controller or not. You may not need the switch debounce circuit but it can't hurt. Just duplicate the highlighted part of the circuit to control more motors:

Gerhard Olivier:
Thanks

Here goes - if gecko g540 controlls 4 motors would g250 be ok to just controll 1 axis ( keep cost down)

The controller circuit for just 1 motor is same just drop 1 highlighted block??? or an i misunderstanding?#
And then most important how difficult and expensive to make up that PCB given NO, NONE, ZIP experience with electronics??

Thanks this looks promising.

gerhard

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