On Tuesday 02 June 2009 19:43:20 Kirk Wallace wrote: > Sorry, I know this was answered recently, but what is the preferred > micro-controller, PIC, AVR, etcetera? My only requirement is that I can > (try to) program it with Linux, preferably with C. I'm looking at > controlling a DC motor (PWM) and a few digital I/O ports for a tool > changer. I'll probably link to it with SPI or Modbus.
I think AVR would be quite good for that, as it's cheap, easy and includes a few hardware PWMs and hardware SPI. I use an AVR for debouncing of the limit and ref switches of my machine. That works quite well and the major advantage for me is that I can rewire the whole thing in software without touching a soldering iron. The AVR certainly is good enough for non timecritical tasks like tool changer I/O. I use it for time critical reference switches. The max deviation I get from the microcontroller being single-threaded are only a few microns. My switches are not that accurate, so it doesn't matter to me as I would get that deviation anyway. Here's the firmware: http://bu3sch.de/gitweb?p=debounce.git;a=tree Have fun. -- Greetings, Michael. ------------------------------------------------------------------------------ OpenSolaris 2009.06 is a cutting edge operating system for enterprises looking to deploy the next generation of Solaris that includes the latest innovations from Sun and the OpenSource community. Download a copy and enjoy capabilities such as Networking, Storage and Virtualization. Go to: http://p.sf.net/sfu/opensolaris-get _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
