On 12/6/2016 6:18 AM, Andreas Pettersson wrote: > I see, i actually thought it replaced both the host card and the > daughter card and didnt run an OS. > That after reading repo readmes and some of the issues i was linked to > before. > > So it would still need an external daughter card. Still that is quite > interesting. if one could save on buying mesa cards why wouldnt one > want todo that. =)
You are not required to have an external daughter card. For things like step/dir or (non muxed) encoder inputs, you can tie the signals directly to the FPGA board if you want. The daughter cards provide protection, isolation, an easy way to connect signals, and support the "complex" interfaces (smart serial, multiplexed encoders) that allow connecting more signals than there are FPGA pins. Whether or not a Mesa daughter card makes sense depends on your particular needs. You might find one handy for the protection and isolation features. For pin expansion, the DE0-Nano supports 68 directly connected I/O pins (up to four DB25 connectors with 17 signals each if you use my adapter card), which ought to be enough control lines for most machines. -- 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.
