Re: [CAD_CAM_EDM_DRO) 555 Timer circuit Request

Hello,

I have a commercial "step generator" (DCI, I think) which has a two
axis output. It uses an R/C airplane type joystick to effect axis
movement. The farther the stick is pushed over, the faster the pulse
train. Using Dan M's camtronics setup worked similarly, but with a
knob; i.e.,YOU were the "ramper".

If you add too much to this proposed circuit, you may as well build a
controller, IMO! And we have certainly covered that idea in past
messages, if anyone is interested...

Having said that, it might be pretty cool to have a PIC-based pendant.
It is really just a "deluxe" power feed, but with the ability to run
angles! I sorta' have this with the joystick setup.

But a 2 axis pulse train, with a linear interp routine, and an input
for angles could make a nice product? Ramping? I probably wouldn't,
but I can see reasons on both sides of the issue...

Hope this helps.

Ballendo


--- In CAD_CAM_EDM_DRO@y..., "Carol & Jerry Jankura"
<jerry.jankura@s...> wrote:

> Bill:
>
> I worked with some Superior steppers with Unipolar drives twenty

some years

> ago. We used a simple multivibrator gated into the CW and CCW

inputs of the

> controller board to drive them. No acceleration or deceleration. No

problems

> either. The issue is wether or not the motor can supply the

required torque

> "instantaneously." If it can, the motor will turn reliably. If it

cannot,

> the motor will either lose steps or stall.
>
> -- Carol & Jerry Jankura
> Strongsville, Ohio
> So many toys, so little time
>
>
>
> -----Original Message-----
> From: wanliker@a... [mailto:wanliker@a...]
> Sent: Tuesday, May 22, 2001 3:15 AM
> To: CAD_CAM_EDM_DRO@y...
> Subject: Re: [CAD_CAM_EDM_DRO] Re: [CAD_CAM_EDM_DRO) 555 Timer

circuit

> Request
>
>
> In a message dated 5/21/01 10:36:10 PM Mountain Daylight Time,
> KM6VV@a...
> writes:
>
> << There must be ramping for steppers. Even changing the speed

abruptly

> will
> stall
> > a motor.
> > Rich D. >>
>
> If used for testing a stepper for movement or using it for a manual

drive,

> is
> this going to be a factor? I was thinking that this is one thing

that is

> missing for someone that wants to test or drive a stepper but is

not set up

> with a computer program to feed the signals.
> bill
>
> Welcome to CAD_CAM_EDM_DRO@e...,an unmoderated list for the
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