Remora - Rpi Software Stepping Using External Microcontroller via SPI

Sorry guys I have you mixed up.
The text in the video is not italic but the text from the splash gcode of Axis is.
On the video there's a little movement on an idle axis on a single axis move but
i thought it was coming from acceleration because I can hear the motor whining
to a stop but it took time.
With the splash gcode "LinuxCNC" it was more pronounced and I was baffled
why, 'till I realized that the text is actually in italic.
So I guess there still is a problem with the single axis move.
BTW, the Y axis is along the readable text if it's not obvious from the video.

I got my stlink from a nucleo f446 ( which I somehow lost during a move )

mhel wrote:

Sorry guys I have you mixed up.
The text in the video is not italic but the text from the splash gcode of Axis is.
On the video there's a little movement on an idle axis on a single axis move but
i thought it was coming from acceleration because I can hear the motor whining
to a stop but it took time.
With the splash gcode "LinuxCNC" it was more pronounced and I was baffled
why, 'till I realized that the text is actually in italic.
So I guess there still is a problem with the single axis move.
BTW, the Y axis is along the readable text if it's not obvious from the video.

I got my stlink from a nucleo f446 ( which I somehow lost it during a move )

Hi Rommel, 

Try turning up the P gain on the LinuxCNC Remora component. This seems to fix it but does not explain the underlying error wind up. Any gurus here have any thoughts? Doug helped me iron out the original issues with the motion loop, similar to what the Mesa boards have due to the time delay between a read and write. Maybe we need more than and a P and FF1 control loop?

Thanks Scott,
That made a difference streamable.com/1u35vm

I was being conservative and made an increment of .25, I am at 3.0 gain and still nothing very noticeable is happening. I jacked it up to 5.0 and surely the effects becomes obvious. It's like it stiffens the axis. It probably requirem more tuning, but It's a progress

Setting the gain at 10.0 makes it even better, axis in motion really just stop no overshoot atleast as far as I can notice.
Now how would I know if I'm overdoing it?

looks like it's still coming to a slow wine
down stop

Oh that one was when the gain was set to 5.0, I edited that post after I tried
the gain of 10.0. Althought the 5.0 setting improves a lot, this one is better.

streamable.com/ix3rz1

Would it be technically possible to make remora into a usable can interface for Linuxcnc?

Many microcontrollers have can. Linuxcnc currently doesn't. Or use it to hook up custom electronics such as encoder counters?