Linuxcnc and 3d Printing - Configs/comps/examples

-Boards-
CRAMPS : pretty sure this is the only board specifically designed for linuxcnc/machinekit.
Although it looks dated compared to newer 3dprinter boards, it remains a solid board still. I own one but not on a 3d printer, and it is a very nice, compact unit. it was exactly what I wanted, a 3.3v RAMPS shield I could put on a smarter brain. Its what I still want today, except a mesa driver version

https://reprap.org/wiki/CRAMPS

http://pico-systems.com/osc2.5/catalog/product_info.php?cPath=2&products_id=1

https://github.com/machinekit/machinekit/tree/master/configs/ARM/BeagleBone/CRAMPS
The config is for machinekit, but that is minor changes.

This is a setup guide for CRAMPS I found helpful before. It is dated in the sense it lacks the frills of modern 3dprinting, and it is for machinekit but not radically machinekit so it is still very relevent to linuxcnc.

https://designmakeshare.wordpress.com/2014/06/08/initial-setup-cramps-beaglebone-cape-with-machinekit/

This is a setup guide for cramps from one of the machinekit guys. this guide is very machinekit specific, and might not be too relevant to linuxcnc. but they have neat stuff going on , and a tomato is still a fruit at the end of the day.

https://machinekoder.com/mini-3d-printer-from-hobbyking-running-with-cramps-board-and-machinekit/

--- HOSTMOT2 (aka something fpga) :
I always on the lookout for 3d printing related fpga setups, the ones I have found have some pretty interesting setups

This guy is running a mojov3 spartan6 dev board for 3d printing with hostmot2 loaded onto it, and an rpi3. The mojov3 tailored hostmot2 makes use of the onboard arduino, and uses it as adc channels. His newer revisions appear to use the driver board of a duet3d, which appear to be all spi channels now. There also appears to be an I2C comp with io expander

https://github.com/sleepybishop/linuxcnc_configs

https://github.com/sleepybishop/mojo_hostmot2

--hostmot2 for mojov3 using spartan6

https://github.com/sleepybishop/artix_hostmot2

--hostmot2 for alchitry au using the xilinx xc7a35t

https://github.com/LinuxCNC/linuxcnc/compare/master...sleepybishop:fishybearG-master

--his branch has all the related comps.

https://github.com/sleepybishop/linuxcnc/blob/fishybearG-master/src/hal/drivers/tmc26x_bspi.comp
--Trinamic tmc26x bspi driver. As far as I understand this is for hostmot2 and not running directly from rpi spi channel

https://github.com/sleepybishop/linuxcnc/blob/fishybearG-master/src/hal/user_comps/i2c.c

--i2c comp

https://github.com/sleepybishop/linuxcnc/blob/fishybearG-master/src/hal/drivers/max31855_bspi.comp

--max31855 thermocouple to spi driver bspi component (i think this is different than the standard linuxcnc one)

https://github.com/sleepybishop/linuxcnc/blob/fishybearG-master/src/hal/user_comps/sx1509b.c

--i2c io exopander for SX1509B

This is another interesting setup. It is a pretty hard machinekit setup, but I think the hostmot2 portions should still be usable. This setup involves a modified cramps shield, a de10-nano, which uses an altera SOC, and an ultramiyir board with xilinx soc, both are fpga with an arm core. As memory serves, they run machinekit on the arm portion, and a modified/trimmed version of hostmot2 loaded to the fpga core to control the io. Interesting but a separate topic.
https://github.com/the-snowwhite/Hm2-soc_FDM

There is even a fancy gui for configuring the trinamic stepper drives on spi, but i think it is using the machinekit gui qt-quick implementation

https://github.com/the-snowwhite/Hm2-soc_FDM/tree/master/projects/Trinamic/20-bit_Comp

Trinamic TMC2660 bspi stepper driver for hostmot2, as far as I can tell at least. still trying to see how different the tmc26x and tmc26xx are from the tmc5160, and tmc2130

-VELOCITY EXTRUSION-
just some resources ive found here and there

Saw this one on hackaday a while ago

https://basdebruijn.com/tag/velocity-extrusion/

This one seems pretty clean and well done. It comes in the form of a component and has a glade gui also. dont know how it preforms and it is for machinekit.

https://github.com/alessandrotorre/Acceleration-and-Velocity-Extrusion