On Tue, 5 Jun 2012 01:52:00 +0100, andy pugh wrote: > On 5 June 2012 01:37, jeremy youngs <[email protected]> wrote: >> I want to know with lcnc doing all of the steps >> does it microstep and can i drive an isolated mosfet h bridge >> directly from >> this with a current regulated supply? > > In theory, yes. LinuxCNC has the ability to control the bridges > individually. Look at the stepgen patterns: > > http://www.linuxcnc.org/docview/html/hal/rtcomps.html#_step_types_a_id_sub_stepgen_step_types_a > > Normally, though, the Mosfets are chopped to limit the current. I > guess in your case LinuxCNC could enable the relevant hardware > current-limiting PWM. > > Are you sure you need the full 11A? (And are you sure it isn't 1.1A? > That seems an unusually big current) > > How many wires do they have? Do you have the opportunity to wire them > series?
Not sure if this is applicable, but the *old* MaxNC-10 used a direct phase drive scheme, and here is an old configuration for it: www.directionless.org/tmp/maxnc/ Somewhere I also have an old hack for both EMC1 and early EMC2, but I have not played with it in a while. I do not know if this still works in the latest version, but as luck would have it I plan to start beating on this puppy again, so if you contact me off list I will update you on any progress. If you have any luck, maybe you can update me ;-) EBo -- ------------------------------------------------------------------------------ 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-developers mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-developers
