Re: [CAD_CAM_EDM_DRO] Re: 555 timer circuit

Can you alter that simple (#1) circuit to provide a rotary switch that would
allow an individual to select a number of steps rather than just one?

Smoke

>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.
>
>
>Welcome to CAD_CAM_EDM_DRO@...,an unmoderated list for the

discussion of shop built systems, for CAD, CAM, EDM, and DRO.

>
>Addresses:
>Post message: CAD_CAM_EDM_DRO@yahoogroups.com
>Subscribe: CAD_CAM_EDM_DRO-subscribe@yahoogroups.com
>Unsubscribe: CAD_CAM_EDM_DRO-unsubscribe@yahoogroups.com
>List owner: CAD_CAM_EDM_DRO-owner@yahoogroups.com, wanliker@...
>Moderator: jmelson@... timg@... [Moderator]
>URL to this page: http://groups.yahoo.com/group/CAD_CAM_EDM_DRO
>bill,
>List Manager
>
>FAQ: http://www.ktmarketing.com/faq.html
>
>Your use of Yahoo! Groups is subject to http://docs.yahoo.com/info/terms/
>
>