Usefulness? Maybe not with a machine tool because I can buy a TB6600 based controller on eBay for $10 shipped. But for my robot motors I care a LOT about weight, power and volume.
Typically one 16-bit uP on a 1.25" x .75" PCB can read two encoders, control two motors with PID algorithm and accept commands over an I2C serial bus and the cost is under $5. But there is little motivation to do this if controlling an 8,000 pound stationary machine and you have access to AC mains power. I would like to one day be able to have LinuxCNC control a 20 axis "hexibot" but today the required hardware would never fit. On Wed, Mar 30, 2016 at 7:14 AM, Nicklas Karlsson < nicklas.karlsso...@gmail.com> wrote: > I could confirm micro controller PWM units are by no surprise good stepper > generators. Toggle times may be transferred by DMA which reduce CPU load at > the same time as flanks are placed by the accuracy of the oscillator > frequency. I can't imagine there is any point to do better and even this is > probably way more than needed and maybe even an order of magnitude better > than needed. > > Usefulness of micro controller generation of stepper signals may be > another story since there are plenty of other possibilities. They are > however available cheap if needed. > > Nicklas Karlsson > > > ------------------------------------------------------------------------------ > Transform Data into Opportunity. > Accelerate data analysis in your applications with > Intel Data Analytics Acceleration Library. > Click to learn more. > http://pubads.g.doubleclick.net/gampad/clk?id=278785471&iu=/4140 > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > -- Chris Albertson Redondo Beach, California ------------------------------------------------------------------------------ Transform Data into Opportunity. Accelerate data analysis in your applications with Intel Data Analytics Acceleration Library. Click to learn more. http://pubads.g.doubleclick.net/gampad/clk?id=278785471&iu=/4140 _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
