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General Mach Discussion / Re: Creeping Y position. Anyone know something else I can try?
« on: August 07, 2008, 05:46:44 PM »
Hi Chip,
The Gecko's only run when the "Step Low Active" is set to Green checkmark. Both tom Caulde (the manufacturer - very knowledgable), amd Dan Mausch (another very knowledgable CNC guru from way back), both say that they need to have the Red "X". When I do that though, I get a low groaning from the motors, with very, very little movement. Put them back, and the run silky smooth. I have no idea why it doesn't work as it was designed.
The BOB is CandCNC's Mini-IO combo board. They're at: http://www.candcnc.com/ The website has changed to some new products, but the The BOB is under "Quick Pick and Buy". I also have their MTA Mass Termination Card, two EZPlug Gecko dual Stepper Cards, their Mini-IO Remote Relay, and Mini-IO_Port2. The manuals for all of these can be read from the menu on the right of the website.
I tihnk the opto-isolators must be OK - the board runs fine. In fact everything does..., : motors are silky smooth, there is no excessive heat, X and Z axes do exactly what they're told, etc. The only problem is that the router tip increments on the +Y direction for every round of my test program. (traces a 4" X 4" square hole, in Absolute mode.
You might be right - it may be time to go directly from the BoB to the Geckos.
Thanks!
Dave
The Gecko's only run when the "Step Low Active" is set to Green checkmark. Both tom Caulde (the manufacturer - very knowledgable), amd Dan Mausch (another very knowledgable CNC guru from way back), both say that they need to have the Red "X". When I do that though, I get a low groaning from the motors, with very, very little movement. Put them back, and the run silky smooth. I have no idea why it doesn't work as it was designed.
The BOB is CandCNC's Mini-IO combo board. They're at: http://www.candcnc.com/ The website has changed to some new products, but the The BOB is under "Quick Pick and Buy". I also have their MTA Mass Termination Card, two EZPlug Gecko dual Stepper Cards, their Mini-IO Remote Relay, and Mini-IO_Port2. The manuals for all of these can be read from the menu on the right of the website.
I tihnk the opto-isolators must be OK - the board runs fine. In fact everything does..., : motors are silky smooth, there is no excessive heat, X and Z axes do exactly what they're told, etc. The only problem is that the router tip increments on the +Y direction for every round of my test program. (traces a 4" X 4" square hole, in Absolute mode.
You might be right - it may be time to go directly from the BoB to the Geckos.
Thanks!
Dave