RE: [CAD_CAM_EDM_DRO] Newbie introduction/Questions

> > -----Original Message-----
> > My questions are in general what strength motors should I be looking
> > for and where can I get plans to build a controller that will supply
> > adequate power to them.
> > I have been doing a lot of looking on the net and searching the
> > archives of this list and have come up with lots of valuable info.
>
>Lots of details required to make a firm answer. How will the axis's be
>driven? If you are using screws you get a lot of reduction and the motors
>can be smaller to handle the cutting loads than if you are using rack and
>pinion or direct belt drive (like on many printers).

Probably screws. I'm waiting to see what one of my friends comes up
with. I'm just looking for a ballpark range so I can go through and see if
there is anything lying around I can use.

> > Geckos or anything similar are not an option. I don't have a problem
> > building any of it but a pre etched board and schematics would be nice if
> > not too expensive.
>
>I don't follow your comment that Gecko's or similar is not an option. Is
>this just a budgetary constraint? I have built some of my own controllers
>using the L297/298 chip sets and when it was done and said I probably had
>$35 per axis in hard costs and I made my own board. If you add a commercial
>board for about $20 or so a piece you are now at $55 per axis. I can sell
>you a closeout original version Gecko G201 for not much more than that and
>it will work right of the bat and you will not be limited to the 2 amps a
>L297/298 setup is.
>
>
>
>Tim
>[Denver, CO]

It is due to the lack of funds. This is an out of pocket funded
project. The parts for the board are already on hand except for a few odds
and ends from other projects. The electronics class can build the boards if
needed.

I'm trying to get a plan of attack before I jump in there. When I do a
table for me I will use the Geckos.

Thanks
Robert Adams
http://gparts.freeyellow.com