OctoPrint-FirmwareUpdater VS grbl

After reading some more seems like you CAN do it, but I was either too scared or didn't know about it in Mid-2021

Firmware Updater Useful for flashing firmware to printer without having to use sd card. Frees up an sd card for me

I have 2 skr 1.4 turbo boards and before I switched to klipper I always updated my firmware using the firmware updater plug in for octoprint. On the github page it guided you through setup for that board family. https://plugins.octoprint.org/plugins/firmwareupdater/

I followed the install instructions from this link. I installed the python 3 compatible version of heat shrink.

Method 3 (Through Octopi) - I installed Anaconda to download the firmware updater for Octopi found here (https://plugins.octoprint.org/plugins/firmwareupdater/) but cannot install it through the command line. I get "python setup.py egg_info did not run successfully.". Tried upgrading pip to no avail.

if you have an Raspberry pi you can try https://plugins.octoprint.org/plugins/firmwareupdater/

I'm not sure if this OctoPrint plug-in works with the neptune 2 but it's worth a shot. https://plugins.octoprint.org/plugins/firmwareupdater/

You need a plugin called Firmware Updater.

Only if you already have Binary File Trainsfer setting enabled in Marlin. So you might be stuck since that's not normally enabled. But when it is enabled, it does work. I only update via octoprint anymore. https://github.com/OctoPrint/OctoPrint-FirmwareUpdater/blob/master/doc/marlinbft.md

The other thing to consider is the $12 config in GRBL itself: Arc tolerance. Drawing circles is EITHER a long series of small line segments, OR an "arc". If this problem only effects arcs: you can likely limit your search there.

You can use NO limit switches with GRBL. Here is some info. But NC is generally a better option because if there is a failure in a wire or connector, the circuit will open and stop the machine.

Grbl is a firmware for Arduino based microcontroller dev boards. https://github.com/gnea/grbl/wiki Once programmed you stream the gcode to the grbl controller over USB. It's constrained by the limitations of the Arduino hardware or runs on but it's a great entry point to CNC machines. Note that a 32 bit grbl is under development but pre built control boards are still rare.

The gnea/grbl GitHub Getting Started page spells all that out.

This may not be a fit, but it may give you ideas for prototyping/software dev. I have prototyped various CNC/optical/medical projects using GRBL GitHub and a simple benchtop frame-gantry setup that I made from 80/20 and steppers.

To learn more: https://github.com/gnea/grbl/wiki/Grbl-v1.1-Configuration

If it really is GRBL, you'll find most of the information you need at https://github.com/gnea/grbl/wiki and the $ commands at https://github.com/gnea/grbl/wiki/Grbl-v1.1-Commands