Remora - Rpi Software Stepping Using External Microcontroller via SPI

Hello,
I am eager to know what is the fastest stepgen rate STM32F4 board support.

mburwell wrote:

Hello,

Haven't ever used a forum like this before sorry if I am doing this incorrectly.

I am trying to get remora working on an SKR 1.3 board with an RPI4. I'm sure this is something stupid simple, everything appears to be working as far as SPI between the RPI4 and the SKR 1.3 but when I take it out of estop in linuxcnc and click to power it on in linuxcnc everything seems good. As soon as I try to move any axis I get a joint follower error.

I am using the remora xyz config for linuxcnc and it is as-is from when i downloaded it. I am clueless as to where to start looking for the issue.

Any help would be great, thank you.

Is the SKRv13 config,txt loaded onto the SD card? You would get the following error if there is no stepgen loaded.

virencq wrote:

Hello,
I am eager to know what is the fastest stepgen rate STM32F4 board support.

Remorea-flexi-hal is running at 120khz by the looks.

Hello Scott,
Thank you for providing Remora; I suspected that there was a sensible way to create a motion controller, great job.

I have had an MKS SBASE v1.3 on the shelf for a couple of years and would like to utilise it for Remora.  The chip is LPC1768FBD100.
In 'github.com/scottalford75/Remora/Firmware/FirmwareBin' there is SKRV1_4 but no MKS SBASE v1.3; as they are both LPC1768 chips will this firmware.bin work with the MKS SBASE v1.3?

In the documentation for MKS SBASE v1.3 there is a wire connection from RPi GPIO 25 to Px.x; I'm assuming that this is optional in case an additional pin is to read from the MKS board, is this correct?

Kind regards,
Tim

TimGow wrote:

Hello Scott,
Thank you for providing Remora; I suspected that there was a sensible way to create a motion controller, great job.

I have had an MKS SBASE v1.3 on the shelf for a couple of years and would like to utilise it for Remora.  The chip is LPC1768FBD100.
In 'github.com/scottalford75/Remora/Firmware/FirmwareBin' there is SKRV1_4 but no MKS SBASE v1.3; as they are both LPC1768 chips will this firmware.bin work with the MKS SBASE v1.3?

In the documentation for MKS SBASE v1.3 there is a wire connection from RPi GPIO 25 to Px.x; I'm assuming that this is optional in case an additional pin is to read from the MKS board, is this correct?

Kind regards,
Tim

Hi Tim, yes. The Mks-Sbase was one of the first boards used for development. It does require some small mods to work. There is a config example in the repo

github.com/scottalford75/Remora/tree/mai...gSamples/MKS%20Sbase

Also, check out the docs for more details on the small mod needed.

remora-docs.readthedocs.io/en/latest/hardware/Mks-Sbase.html

BR
Scott

Scott, many thanks.
Wishing you a Happy New Year,
Tim