Re: [CAD_CAM_EDM_DRO] Re: 555 timer circuit

Hi Mariss,

Yes! I'd like to see #2. .DXF file would also be useful. I wouldn't
have thought there would be that much interest in this thread!

Dan! Wanna new product?

Alan KM6VV

mariss92705@... wrote:

>
> Hi,
>
> I have followed this thread with interest and I thought it would be
> fun to draw up some circuits to do what was talked about. What I came
> up with is:
>
> 1) Simple. A circuit that uses a SPDT, center-off switch. When
> depressed it generates a single CW or CCW step pulse. 2 seconds later
> it outputs a non-accelerated step pulse train at a speed of your
> choice until the switch is released. Uses a single 4093 IC and a few
> R's and C's.
>
> 2) Medium. Same as above but generates an accelerating step pulse
> train of your choice of accel rate and terminal velocity. Releasing
> the switch then decels at same rate until motor stops. 2 to 3 generic
> ICs and of course some R's and C's.
>
> I can post it to the files section after I convert paper/pencil stuff
> to a .pdf if anyone wants.
>
> Mariss
>
> --- In CAD_CAM_EDM_DRO@y..., wanliker@a... wrote:
> > I have not used it yet, but it can be used for moving any axis it
> is hooked
> > too, or make three. Or for the guy that does not want full CNC, he
> can just
> > use a stepper and let it do the cranking from one end to the
> other.
> > Automatic but wholly under visual control. and with the single
> step, and a
> > DRO could do a lot of stuff easily, just setting there watching. I
> think it
> > would be rather easy to add your accel/deccl circuit, tied in with
> a switch
> > so selectable, If you are repeating a cut then use it, or not your
> choice,
> > same as high/low speed, or single step. I would consider using a
> ten turn
> > pot for the speed control.
> > OK, so I need new glasses. But the numbers look like NE555 to me.
> I ignored
> > the top half of the circuit, I have found in the last 40 years that
> a lot of
> > circuits can be taken out of context and work elsewhere with few
> problems,
> > just consider them black boxes, I don't know enough about designing
> to do it
> > from scratch.