I was searching for a CNC controller board that was compatible with grblHAL for a MACH3 conversion that I was going to do. I bought a used OMIO X8 CNC that came with the MACH3 software and controller. I had used grbl on my other machines in the past and just couldn't get used to MACH3. Long story short, I found the Scylla board adverstised on the web somewhere and decided to give it a shot. There was already a port of grblHAL to the board on the web so it most of the hard work was already completed. I think it was about 6 months ago that I did the conversion and it's been running without any issues since. I am using the Sienci Labs gSender software for my gcode sender. For anyone interested I put a few videos of my conversion on YouTube. I've been late on uploading a video showing how to flash grblHAL onto the board and how to edit the grblHAL firmware if you need it. I would highly recommend this board for anyone building a custom machine or looking to upgrade an older machine.
Conversion playlist
https://youtube.com/playlist?list=PLgCmNhrVBcXp4KaI3E3DT8NJ11kGZTyMw&si=UZ-wdqVe5hS8ZIsZ
Unboxing
https://www.youtube.com/watch?v=De_2iR7vv1Y&list=PLgCmNhrVBcXq-z1dVcD0Nthe7NbBBjOLH