Don't want to fuel any flame wars, but this kind of solution is probably fine for generic desktop cnc routers with steppers. Grbl even has jerk limited trajectories. As soon as you get out of that stock 3 or 4 axis space and want to have tool changers, servos, non-cartesian machines, lathes, custom logic and the like, Linuxcnc really shines. For the lower end machines this package is aimed at, a Rpi 4B with Mesa 7i90 and Linuxcnc 2.8 works great and is price competitive.
-- Ralph On Jun 13, 2021 9:51 AM, Rafael Skodlar <[email protected]> wrote: CAUTION: This email originated from outside the Walla Walla University email system. On 6/13/21 1:49 AM, John Dammeyer wrote: >> From: Andy Pugh [mailto:[email protected]] >>> On 13 Jun 2021, at 00:28, Leonardo Marsaglia <[email protected]> wrote: >>> >>> I do have a Rpi3 >> ... >>> I don't know if that's a good candidate to test LCNC. >> >> I wouldn�t expect the 3B to work with Mesa Ethernet as the pre-4 Pis have >> the Ethernet in the USB bus. > > I've also read that the Pi4 8GB is not ideal for LinuxCNC. Apparently it has > issues with that much memory on the Pi. It works best with 4GB apparently. > > John Huh? That makes no sense. If nothing else, you can use it for fake swap if nothing else. RPi is NOT good for any industrial use. This thing is for kids to learn Linux and open source programming techniques. RaspberryPi PCB design is just bad for industrial use: holes for mounting, using glue for CPU heatsink, connectors positions and their orientation, sandwich style header connector for DIO, silicon waste (for sound and video IO), etc. To execute G-code using a large footprint computer makes no sense anymore. This open source based solution is gaining popularity for simple CNC: https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Fopenbuildspartstore.com%2Finterface%2F&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7C9377f0f2a33846d8a41108d92e8b7bf1%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C1%7C637591998889297483%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=jqHDAlBt4VCbphwggl1aVHGR%2F5thbXWVtXbdSs3AF%2F0%3D&reserved=0 and other related HW. Just the fact that Openbuilds is not using LinuxCNC is saying something. Dead end: no innovations, limitation in electronics/hardware selection. -- Rafael Skodlar _______________________________________________ Emc-users mailing list [email protected] https://nam12.safelinks.protection.outlook.com/?url=https%3A%2F%2Flists.sourceforge.net%2Flists%2Flistinfo%2Femc-users&data=04%7C01%7Cralph.stirling%40wallawalla.edu%7C9377f0f2a33846d8a41108d92e8b7bf1%7Cd958f048e43142779c8debfb75e7aa64%7C0%7C1%7C637591998889307481%7CUnknown%7CTWFpbGZsb3d8eyJWIjoiMC4wLjAwMDAiLCJQIjoiV2luMzIiLCJBTiI6Ik1haWwiLCJXVCI6Mn0%3D%7C3000&sdata=yO71qVTrrJI05DZNQ%2FsMZcW%2FTkwMpenJXXiYQdetMXA%3D&reserved=0 _______________________________________________ Emc-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/emc-users
