I have been struggling with the GREX so it's tie to give it the flick.

Which bob can someone suggest. I wish to run high feed rates of +5000mm/min on a material cutting table using a tangential knifeJason

Hi,

The idea of the SmoothStepper is to look like 2 parallel ports. So, any of the parallel port BOBs should be fine.

Cheers,

Peter.

I am also wondering what board to use... I need something without built in features, all I need is screw-terminals, and selectable direction (for pins2-9) and some protection...
i would add relays and fancy circuits separately.

Am I right to suppose that as SS goes from the USB there is no need for charge pump circuity? Or there is still good use for it, to output the ENABLE signal for the drives?

The PMDX-122 looks nice, it is almost what I need, but its price is quite high... (And I am in the EU, ordering and customs is problematic)

I would certainly recommend the PMDX122, it may be more expensive than some of the others about but the quality is excellent and reliability seems to be excellent. I have them on 4 different machines and the first one was purchased at least 4 years ago.
Hood

Thanks, Hood!

What do you say for the charge pump issue with the SS ? Can be omitted, or useful to trigger device`s ENABLE?

Will let others comment on that, dont want to upset anyone again

Hood

Why would anyone be upset because of your opinion / advice?

Ok, So as I am in the EU, I do not have much chance to see such BOB... Since you have them, I would like to ask you (or anyone who has such device) to post a picture of the board// I just want to see the layout, on the web I have not found any good pictures... I checked the user`s manual, too, but it is not clear e.g. where are the LED-s, etcetc...

I will take a pic today if I remember The LEDs are surface mount so they wont be glaringly obvious on the pic but you will see them once you realise that.

Hood

Heres a pic of the PMDX122 thats in the Beaver Mill cabinet.
Hood

Hi Hood, in the above picture I notice that cable from the smoothstepper is not plugged in to the PMDX, was this to make for a clearer picture? Is it possible to provide more detailed pictures or diagrams of the larger layout, just for me to get a better understanding.

Cheers