>> Another plan might be to make an FPGA board specific for the Bone, but what >> do I do with all the inventory I already have, here? <<
Obviously you are not the only one in that boat! But I don't think the PC based CNC market is going to vanish overnight even if the BeagleBone is wildly successful.. as this is bleeding edge at this point and it will take a while to shake things out. But long term, it certainly could be a game changer. >>So, FPGAs still have something to offer. << I entirely agree. One thing that really got my attention with the BeagleBone is that Canbus and Profibus capes are in the works and those are targeted directly at the industrial automation market. Dave On 4/28/2013 10:25 PM, Jon Elson wrote: > Dave wrote: > >> I disagree. >> >> If you want a killer product for the BeagleBone Black, you need to toss >> the EPP port concept entirely and have the BeagleBone Plug into the >> Breakout board - similar to a cape. >> > Yes, I mostly agree with this. What I had in mind was to put an 8-bit > plus control > signals interface in the adapter so that it could connect to my existing > boards, > as a first step. Then, I can change the firmware on my boards to handle a > much faster protocol between the ARM and my FPGAs. Another plan > might be to make an FPGA board specific for the Bone, but what do I do > with all the inventory I already have, here? > > The problem is in a mid-performance servo system, the PRU may not > be fast enough to read encoders and produce PWM for the servo drives. > Since there are two PRU units, this may not actually be true, but I still > imagine that a completely software encoder counter would take at > least several us, maybe tens of us to complete for 4 or more axes, so > that would limit the maximum encoder count frequency. I have often > run into the 1 MHz default count rate on my boards. So, a 100 KHz > count limit would be at least a concern. Also, using the PRU to generate > PWM, I'd imagine the timing resolution would be a us or so, at best. > I have 25 ns timing resolution with my PWM controller. So, FPGAs > still have something to offer. > > Just some comments to throw out there. > > Jon > > ------------------------------------------------------------------------------ > Try New Relic Now& We'll Send You this Cool Shirt > New Relic is the only SaaS-based application performance monitoring service > that delivers powerful full stack analytics. Optimize and monitor your > browser, app,& servers with just a few lines of code. Try New Relic > and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr > _______________________________________________ > Emc-users mailing list > Emc-users@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/emc-users > > ------------------------------------------------------------------------------ Try New Relic Now & We'll Send You this Cool Shirt New Relic is the only SaaS-based application performance monitoring service that delivers powerful full stack analytics. Optimize and monitor your browser, app, & servers with just a few lines of code. Try New Relic and get this awesome Nerd Life shirt! http://p.sf.net/sfu/newrelic_d2d_apr _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
