LinuxCNC-RIO - RealtimeIO for LinuxCNC based on FPGA (ICE40 / ECP5)

The JSON file has been uploaded.

ahh, sorry, you need to set the scale (signals/dty)

if your spindle max speed is 20000rpm, you need to set it to 0.005
# 100 / 20000 = 0.005

EDIT: will try to add a little helper-tool for easy setup

Thank you for your help. The spindle PWM pin is now working.

         

I have a question.
At github.com/multigcs/riocore/blob/main/ri...ugins/fpga/BOARDS.md TangNano1K is marked as supported.
I know 1k gates is few, but is supported.
But I can't find any stuff for this board at repository.
I wonder is it possible to use this as one axis controller.
For example in situation when somebody have got working machine and could not make any changes to it, but needs to add 4/5th axis, rotary table, tools magazine or something similar.

You’re right, it’s actually too small for a full setup.

But you could use it, for example, as a satellite, as an extension or for a distributed setup.

www.youtube.com/shorts/2vjq0Kd5WOE


In principle, a single-axis setup would also work, though it’s always a bit tricky to have mixed setups.

I’ve done a test compile:

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Resources | Usage | Utilization

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Logic | 956/1152 | 83%

and it fits

with USB/Serial it's to slow.



EDIT: BTW, the boards in the list are just the ones that have pre-defined pin assignments and can therefore be used easily in the Flow frontend. However, it’s also quite easy to add new boards, or you can let me know which ones you’d like to see included – as long as the FPGA supports them, it’s no problem.