CNC Brain is ready! 6-axis Double Closed Loop Controller

[dirtdiggler]

Thanks for the reply Mike.

Those scales sound promising and definitely a good deal if they are that cheap. Do you know if there if a possibility of burning out your servo drives if they are always moving trying to auto correct or is this a non issue?

I don't have any experience with either software controller so to me it's all new either way. I especially like the CNC Brain because it has all the connections and potential all in one box, which is very nice. If I were to go with breakout boards, Mach software and I/O boards it would cost me upwards of $700.00 for everything.

BTW, Larry from Larken just noted the CNCBrain should work with Viper drives because it's a step and direction controller. The PWM has only to do with hooking the brain up to older equipment. It works with Geckos too and no DAC board is needed. Sorry if I didn't get the memo on this....Duh

[Al_The_Man]

Originally Posted by Switcher Just thought I would let everyone know, that Paul (CncAdmin) made a new forum for CncBrain. This single thread is getting very long. .

Looks like it is falling on deaf ears, no postings so far!
Maybe the only way would be to close this one off.
Al.

[Larken]

Do you know if there if a possibility of burning out your servo drives if they are always moving trying to auto correct or is this a non issue?

It won't hurt the drives, but it will make the motors run hotter and wear out the ball screws.
I think its best to have a backlash comp in the controller (that only comps when there is a direction change) and not try to let the PID overcome that. Thats going to produce a lot of jerking and wear.

[Al_The_Man]

I was originally under the impression that the Brain was going to close the PID loop? This would take the burden off the drives and allow the use of non-intelligent drives with analogue control, which apparently is now extra to implement?
Extra electronics required for differential encoders?
Also it appears that break out box of some kind is required for I/O and encoders etc.
I originally assumed this would be an almost self contained CNC controller, Unless I have it wrong?
The web page for the Brain still seems to have problems with Firefox so it is hard to get a true picture of the full specifications and features.
Al.

[dirtdiggler]

Replying in new forum.

http://www.cnczone.com/forums/cncbrain/