Maybe consider something like Bart Drings - Universal Controller - https://www.youtube.com/watch?v=IMwXUbWLic0
For anyone considering using SPI to a light weight step generator on standard 3D printer hardware, take a look at Remora project - docs https://remora-docs.readthedocs.io/en/latest/index.html code - https://github.com/scottalford75/Remora Default configs are currently for 2 3D printers but many CNCs are just a hal and ini file away. And building/porting the Machinekit hal module. On Friday, November 27, 2020 at 8:03:26 PM UTC-8 [email protected] wrote: > Hello, > > Are people still staying interested in an add-on Cape for the BBB/BBAI > with many input/output channels for Servos/Steppers? I have not put > anything together myself. I like the idea of Open Source being relevant now > and in the future for people like me who tend to not know everything but > that is a person that still likes to make. > > Realistically, there are many advantages to this idea. Not only can a Cape > be useful on such a SiP device or SoC device, it can also pave the way for > other future endeavors to take place for machines. > > For instance, I am by far an expert as many of you already know but I have > learned many things in my time dealing with 3.3v, BBB.io boards. > > Now, although I cannot write a full on script to produce everything needed > from the gpio.h and gpio.c files in the kernel, I can use > specific-already-made libraries w/ ease. > > Machinekit seems to be one of these feature-rich libraries that has its > own shtick and I want to use it w/ new/old ideas of machine workings. > > Seth > > P.S. For the ongoing effort by the beagleboard.org group and speaking for > myself, I would like to finalize working w/ more powerful servos outside of > 5v tech. So, if people are starting to give in on this effort, please do > not. I can use it and once the word gets out on a specified Cape for the > BBB/BBAI that deals w/ heavier motors, I am sure people would flock towards > a powerful alternative. Esp. for the beagleboard.org related hardware and > Open Source efforts of anyone still involved and that will be involved in > the future, learning is mostly part of what we do daily. Without the Open > Source community, people do not learn of new alternatives to older ideas > unless directly associated with these ideas in business or work. Also, to > anyone still building Capes out there in Open Source land, there are some > Cape diagrams on KiCAD. It is not easy to mfg. a Cape and produce source in > combination for novices like me but there are many people out there who can > compensate for my lack of knowledge. "Just a refresher!" I am trying to > keep this effort ongoing and not dead in the water. I know it is not up to > me but I want my "two-cents" to be heard for any bored receivers/believers. > On Friday, June 26, 2020 at 10:14:01 PM UTC-5 [email protected] wrote: > >> EtherCAT is used extensively in industry, a signification number of the >>> CNC controllers now only support EtherCAT servos and IO. >>> >>> The cost of using EtherCAT for CNCs has dropped significantly in the >>> last 5 years with a number of smaller suppliers of servo hardware >>> producing products. >>> >>> Companies like LNC (www.lnc.com.tw) and Moon Industries >>> (https://www.moonsindustries.com). >>> >>> My family business has been using EtherCAT hardware on our wool sampling >>> machines for the last 7 years. Its totally changed how we think about >>> our machines and the way forward. I can say with 100% certainly that we >>> would not be making our machines any more if I had not found EtherCAT >>> eight years ago. >>> >>> Now for the purposes of making a BBB MachineKit board which make the job >>> of controlling my DIY / semi-commercial CNC. >>> >>> I'm not sure. It would be cool. >>> >>> But do not dismiss the idea out of hand. The ASIC's are not that >>> expensive and there are other suppliers out there who are interested in >>> having there chips/products used by DIY. >>> >>> One of these is >>> https://www.bausano.net/en/hardware/ethercat-e-arduino/easycat.html or >>> >>> https://www.bausano.net/en/hardware/ethercat-e-arduino/ethercat-and-raspberry.html >>> >>> >>> Cheers All >>> >>> Mike >>> >>> >> Maybe Ethercat is more prevalent than what I see, I still see alot of >> Modbus in use even on higher end drives. >> >> Well the bus can be mastered now, using hal drivers at the cost of only >> the BB ethernet port AFAIK. The slave is the hardware concern, albeit >> dedicating some PRU resources from the BBAI or an on board ASIC. What's >> that do to the seeed board if the seed board is looking to support both the >> BBB which can't do ethercat on the PRU (AFAIK) and the BBAI that supposedly >> can. Would it be worth the complication on a board like this? Is Mesa SS a >> good concession considering the concerns above about extra IO that can >> easily be added on a SS channel, and I'm sure work for both BB's >> universally? >> >> >> -- 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]. To view this discussion on the web visit https://groups.google.com/d/msgid/machinekit/348e1daf-fbf1-41f3-87d7-1ac4d37671d8n%40googlegroups.com.
