Messages

1

General Mach Discussion / Re: Will Mach Output Quadrature ?

« on: March 13, 2008, 04:34:32 AM »

Awesome guys, the pin config is not a prob, as I will be making my own BOB as well as the servo drives.  This is good news, saves mucking around with logic

I am building in parts, got the H-bridge design done, populating and testing this weekend hopefully, and the micro board will be seperate, hopefully finished in a week or two.

I can post my results here if anybody would like to see the outcome.  (if it works).

Cheers.

Russell.

2

General Mach Discussion / Re: Will Mach Output Quadrature ?

« on: March 11, 2008, 11:40:46 PM »

Cheers Hood, I had a feeling that would be the case.

To accept step/dir the source code would have to be modified, at this stage a couple of logic chips would be the easier option for me (little rusty on my coding) and I make my own boards so a few changes/additions on a layout isn't a problem.

Thanks.

Russell.

3

General Mach Discussion / Will Mach Output Quadrature ?

« on: March 11, 2008, 09:14:43 AM »

Hi all, I am building a servo system and the drive I am using (DSPIC) uses quadrature (CW - CCW) for the input instead of step/dir.

I can change the step/dir to quadrature with logic but I was wondering if Mach will support this outright ?

From what I understand quadrature is faster than step/dir as it can be written to the port in one cycle instead of two.

I posted this exact question over on CNCZone but have not had any replies yet, so I thought I would ask here

Cheers.

Russell.