Remora - Rpi Software Stepping Using External Microcontroller via SPI

I read through the docs but could not fig out the firmware required on the smoothy board or do we just run smooth firmware, also do we do the config for steps per mm, etc in smoothieware or in Linuxcnc.

There is Remora firmware which you put on your controller board. It does not work with Smoothieware on the controller board.

It works by having LinuxCNC do the motion planning etc and sends commands over a SPI serial connection to the controller board which does all the step generation and digital IO stuff.

As for those LPC1768 dev boards I would think it would load onto that just fine but since it's a dev breakout board, you'd have to have your driver boards wired and maybe level shifted if 5V TTL signalling is required. Same goes for any digital IO like switches.

Got it so I load the Remora on the LPC board v.s Smootie/reprat. does the firmware already have the HAL for the pinouts of the difrent boards, do i set up the steps etc in Remora or in Linux CNC like i would with a Mesa

Hi, Remora requires a config.txt file on the controller board to configure the firmware on boot.

Those Haoyu boards look very flexible but you'll need to go it alone for a config.txt to suit your needs.

On the LinuxCNC side you will need a custom HAL file to connector the Remora pins.

Looks like I'll need to get working on some more documentation as the config.txt file format is only in examples at the moment.

Scott

scotta wrote: Hi, Remora requires a config.txt file on the controller board to configure the firmware on boot.

Those Haoyu boards look very flexible but you'll need to go it alone for a config.txt to suit your needs.

On the LinuxCNC side you will need a custom HAL file to connector the Remora pins.

Looks like I'll need to get working on some more documentation as the config.txt file format is only in examples at the moment.

Scott

The only thing needed for the fimware is to load the appropriate config.txt on to the sd card of the board (for example, skr1.4)? It will then configure the firmware using the remora component installed using halcompile? I bought a SKR1.4 mainboard yesterday to test this out, and I am now on the firmware section and unsure where to go with this and going by this github.com/scottalford75/Remora/issues/2
so for after installing remora with halcompile, the instructions for firmware and beyond,
step 1 - load config.txt onto (root?) sdcard , for the skr1.4, its this one github.com/scottalford75/Remora/blob/mai...es/SKRv13/config.txt
step2 - run linuxcnc and use the config "remora-xyz"

and the rest is done by the remora rt component for hal?
So all that needs to be done is configure the joints/axis in the ini?

Hi, there is documentation available, and being updated as feedback comes in to make it more useable and clearer.

remora-docs.readthedocs.io/en/latest/index.html

For your SKR v1.4 download the LPC1769 firmware and copy it to your SD card.

github.com/scottalford75/Remora/blob/mai...LPC1769/firmware.bin

You will of course need to make a cable up to connect the RPi to your SKR board. Instructions are at:

remora-docs.readthedocs.io/en/latest/hardware/SKRV14.html