Hi, The BBB outputs 3.3V for its digital I/O. This may, or may not be enough to drive your motor drives. You do not *have* to have a cape if you wired the BBB pins to the parallel port BOB and from there to your motor drive.
Different version of the MachineKit software act differently on start up. I'm more familiar with the older (2017) software. Most of the pre-configured INI and HAL files from back then will work without modifications. New version may require changes to pin setup files for device tree overlay. If you start with an older Machinekit, I'd recommend using the CRAMPS configuration, as not only does it work, but there are also schematics available of the CRAMPS board you can reference to when you are making the connections from the BBB to your BOB. https://reprap.org/wiki/CRAMPS#Schematic_Files Jeff On Monday, June 24, 2019 at 7:56:23 AM UTC-7, Roberto Gonzalez wrote: > > Hi all. > Recently I have finally manufactured my CNC milling machine and I have > proposed to handle it with a BBB and Machinekit which I already have > (without any type of cape). After much reading and reading, I am still > completely lost and I write here with the hope of receiving help, as I have > seen that you have a lot of knowledge about it. I give you all my data and > expectations to see if you can help me. > > At the moment it is a three-axis milling machine with Nema23 motors and > external drivers and in the future I would like to extend it to 5 axes and > possibly to Nema34. On the other hand, I have a Chinese parallel port > breakout board. I have managed to flash the BBB as well as run Machinekit > following tutorials. And here all my doubts begin. > > Is it strictly necessary that I buy a cape to be able to operate the > machine or would it be worth the breakout board that I already have and > connect it pin to pin to the corresponding ones of the BBB? Should you > need one which would be the easiest to acquire and configure? I tried to > write an email for a BeBop ++ but it seems that the address does not exist. > > And on the other hand and already to finish, so I have read (and tried) > once created and modified one of the configurations that well within the > Machinekit itself I must compile it or run some kind of program to make it > functional and activate the pins of the headers of the BBB, right? I have > tried and executed some but I do not know how to check if I have done well > 😔. > > I would appreciate any help, references, links to follow, etc. It is very > hard to be self-taught. Thank you very much in advance even if only for the > inconvenience and the time spent reading. > > Thank you!! > -- 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. To view this discussion on the web visit https://groups.google.com/d/msgid/machinekit/f2bdf874-dd7e-436f-8364-af3d1c69487d%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
