CAD CAM EDM DRO - Yahoo Group Archive

Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done!

on 2003-07-18 07:56:52 UTC
OK, guys...I need a little bit of help. Who's good with electronics?

I have bought 3 stepper controller boards -- they are based on the
L297/298 chipset, and run my motors very nicely. The down side is that
they have an on-board pulse generator -- no hookup for a parallel port.
Which means...modifications!

Here's the schematic for the board -- it's a surplus board from TI.
http://makeashorterlink.com/?V59F32F45

As I see it, I need to bypass the 555...cut the lead between pin3 on
the 555 and pin 17 on the 297, which is step input. And I need to hook
into pin 18 on the 297, which is direction. Of course it didn't work
like this, which is why I'm asking for help.

Assume nothing -- I've played with serial ports, but I'm not sure about
parallel interfaces -- does anything need to be tied to ground, a state
or enable pin tied such that it is active, etc?

Now, all of this, I can do (though maybe with some help from you
guys)...is there any real danger of blowing something out? I live in a
TINY town, and having to build a breakout board, or something similar,
would add in a week's delay, just because of the unavailability of parts
in this area. To be honest with you all, I just want to see my motors
spin under computer control! Down and dirty hacks are fine, at this
stage of the game.

HELP?!

-- Chuck Knight

Discussion Thread

Charles Knight 2003-07-14 21:06:57 UTC The mechanical part of my router is done! turbulatordude 2003-07-15 06:20:35 UTC Re: The mechanical part of my router is done! ghidera2000 2003-07-15 07:07:33 UTC Re: The mechanical part of my router is done! Statman Designs, LLC 2003-07-15 07:14:22 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Statman Designs, LLC 2003-07-15 07:16:34 UTC Re: [CAD_CAM_EDM_DRO] The mechanical part of my router is done! Charles Knight 2003-07-15 08:07:51 UTC Re: [CAD_CAM_EDM_DRO] The mechanical part of my router is done! turbulatordude 2003-07-15 09:43:57 UTC Re: The mechanical part of my router is done! Leslie M. Watts 2003-07-15 10:57:54 UTC RE: [CAD_CAM_EDM_DRO] The mechanical part of my router is done! rawen2 2003-07-15 11:43:20 UTC Re: The mechanical part of my router is done! Alan Marconett KM6VV 2003-07-15 12:01:14 UTC Re: [CAD_CAM_EDM_DRO] The mechanical part of my router is done! Charles Knight 2003-07-15 17:46:49 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Charles Knight 2003-07-15 18:27:37 UTC Re: [CAD_CAM_EDM_DRO] The mechanical part of my router is done! marvinstovall 2003-07-15 22:50:39 UTC Re: The mechanical part of my router is done! cadcamclub 2003-07-15 22:57:06 UTC Re: The mechanical part of my router is done! Harvey White 2003-07-16 08:24:07 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Alan Marconett KM6VV 2003-07-16 10:38:25 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! JanRwl@A... 2003-07-16 12:51:58 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Harvey White 2003-07-16 13:17:17 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! JanRwl@A... 2003-07-16 13:18:33 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Charles Knight 2003-07-18 07:56:52 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Harvey White 2003-07-18 08:47:16 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! caudlet 2003-07-18 09:15:51 UTC Re: The mechanical part of my router is done! Harvey White 2003-07-18 09:27:35 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Charles Knight 2003-07-18 12:55:29 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Charles Knight 2003-07-18 12:57:36 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Harvey White 2003-07-18 14:03:31 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Harvey White 2003-07-18 14:03:53 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! turbulatordude 2003-07-18 14:31:44 UTC Re: The mechanical part of my router is done! - driver RichD 2003-07-18 15:09:20 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Harvey White 2003-07-18 15:54:53 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! Harvey White 2003-07-18 16:09:28 UTC Re: [CAD_CAM_EDM_DRO] Re: The mechanical part of my router is done! - driver