On 12/28/2018 12:43 AM, Juha Heikkila wrote: > Thank you vety much for the response. > > The idea is to drive a servo amplifier in position loop and also have a > feedback from the servo amplifier. Of course the motors could be ran in open > loop but feedback is always nice for error situations etc.
If the motor controller is closing the servo loop and you're driving it with step/dir, this becomes somewhat more feasible to do with a BeagleBone. Depending on your encoder details, you may be able to get by with a mix of the eQEP hardware encoder inputs on the AM335x and some "soft" encoder inputs managed by the PRU. > Anyone know if there is a compilation about different boards (soc + fpga) > that have been used with machinekit? I don't think anyone has made an official list. I've used the DE0-Nano/Atlas and the DE10-Nano (both Altera FPGAs), and I believe Michael has gotten one or more of the Xilinx Zed-boards working. I also designed an interface board that lets you hook Mesa DB25 I/O cards to the Altera boards: Adapter board: https://oshpark.com/shared_projects/ZSjsiCUd https://github.com/cdsteinkuehler/bobc_hardware/tree/CRAMPS/DE0-Nano_DB25 Mesa DB25 I/O cards: http://store.mesanet.com/index.php?route=product/category&path=69_71 The SoC+FPGA stuff is stable and working, but I wouldn't suggest going down this path unless you're pretty familiar with either FPGA development or minimal Embedded Linux development (or willing to spend a fair amount of time learning). These aren't the easiest systems to work with and there aren't a lot of "off-the-shelf" solutions or configurations. A cheap Mesa card (5i25, 6i25, or 7i92) and low-end PC will probably be *MUCH* easier to work with and configure. -- Charles Steinkuehler [email protected] -- website: http://www.machinekit.io blog: http://blog.machinekit.io github: https://github.com/machinekit --- You received this message because you are subscribed to the Google Groups "Machinekit" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. Visit this group at https://groups.google.com/group/machinekit. For more options, visit https://groups.google.com/d/optout.
