I would no rule out the 8i20 itself in this equation: Does it run firmware, and can this be reflashed ? Can their be a faulty baud rate setting ? Can you retest the 8i20 on a different setup to confirm that it works correctly, if so can you reference this exact setup (software HW etc) ?
Michael B On Wednesday, 25 September 2019 23:40:11 UTC+2, justin White wrote: > > So i got my 7i66 and I have no problems discovering it, reading and > writing to the I/O over Smart Serial. This is the same version of my board > that can only manage discovery with an 8i20. So at this point I'd say SS is > fine in mksocfpga, the rs422 hardware on my board is fine, and I think the > 8i20 hm2 driver in MachineKit is broken unless someone knows otherwise. > > Any of the MK devs able to take this on? > > On Tuesday, September 24, 2019 at 10:09:58 PM UTC-4, justin White wrote: >> >> It was brought to my attention that I should probably have termination >> resistors on the differential encoder inputs. While it was fine in testing, >> after doing some research I'd have to agree. I slapped some pdf schematics >> in there as well. Also improved the differential signal routing. >> >> >> On Tuesday, September 24, 2019 at 6:13:21 PM UTC-4, [email protected] wrote: >>> >>> Looks nice. This and the version with an analogue industrial output >>> (instead of stepgens) would probably satisfy majority of traditional >>> home-grown CNC mill machine projects. >>> >>> Bet the connectors are the most expensive part of the BOM. >>> >>> BTW, I did install the Kicad. True, only in VM, but still... >>> >>> Cern. >>> >>> >> I tend to think of analog as being kind of gross for machine control, too >> much noise over cables. However, It would probably be a good case for >> looking at the possible issues with Smart serial in MK/mksocfpga. The Mesa >> 7i83 would probably be a painless solution for analog servos, and a better >> setup because you can put the 7i83 in it's own shielded case and keep the >> analog stuff away from the rest of it and the only thing between the 2 is a >> chopped up ethernet cable. I just ordered a 7i66-8 that I'll pass on to >> Michael if that fares the same as my 8i20 (discovery happens then faults >> out and drops comm.) >> >> Hopefully mksocfpga will get a little more traction, there's some really >> good use cases for it. From an all in one HMI type deal to what I think >> would be a pretty capable remote machine control setup. >> > -- 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/801339c7-9b52-4a67-b8e7-c26c914477a2%40googlegroups.com.
