I've been working to create some integration between the reprap RAMPS stepper driver board and LinuxCNC. One interesting thing some 3D printers do is disable the Z stepper motor when it is not moving. This relies on the friction of the Z axis assembly for keeping the head in place, but allows hand-adjustment of that axis while the machine is in motion, for instance when starting a print. In fact a popular part to print is a small hand wheel for the Z axis to adjust it.
Putting the question of if this is a good or bad thing aside for a moment, I'm wondering if anyone has any ideas about how this would be done with LinuxCNC. Somewhat complicating things is that stepper drivers typically have an enable delay, so that would likely need to be respected, presumably by the motion component prior to moving the axis. Thoughts on this interesting problem? Thanks, Scott ------------------------------------------------------------------------------ Live Security Virtual Conference Exclusive live event will cover all the ways today's security and threat landscape has changed and how IT managers can respond. Discussions will include endpoint security, mobile security and the latest in malware threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/ _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
