As of know im trying to couple a lattepanda with a 7i46E card instead of
having to rely on several mesa boards as in my servo setup (6i25+7i77+7i84).
The test bed is just a plasma table wit 3 stepper motors.. nothing
fancy.. and it will see its fair share of time ouside in the rain..
thats why i try to shrink
everything down as much as possible. And started to look at machinekit
to be able to choose something smaller in formfactor to run it off of.
gonna try to get my DE0 running and connect it to some stepper drivers i
can prob. throw an optocoupler in the mix for good measure. =)
// Andreas
Den 2016-12-06 kl. 13:36, skrev Charles Steinkuehler:
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.
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https://github.com/machinekit
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