Re: Stepper controller / driver for powerfeed

> OK. Let's back up a bit here.
>
> 1. Do you have a stepper already mounted on your lathe?

Not yet. I have plenty stepper motors on my test bench; I want to
test their torque capacity against the torque needed at the lathe
level before I do the mounting.

> 2. Do you have a driver and power supply for this stepper motor?

Yes.

> If the above are true then you are already pretty close to being done.
> The 555 Timer circuit is your easiest method of doing what you want.
> You will need:
>
> 1. A breadboard to wire up the 555 Timer circuit and 5 Volt regulator.
> 2. Wire up a switch to select either high or low into the DIR pin of the
> Stepper Driver.
> 3. Wire the output of the 555 timer circuit into the step input of the
> Stepper Driver.
>
> For component selection, if you are running a micro-stepper driver a
> frequency output between 0 and 25kHz is more than enough.
>
> John Dammeyer

Yes; 25khz is very suitable. Is there a circuit diagram for this or
project somewhere?

-Erich Stein