There are some new-ish stepper drivers available from Biqu.Equipment here: https://www.biqu.equipment/collectio...r-motor-driver . I purchased a bunch of them to swap the drivers in all my printers with the latest and greatest because they claim to support more current and run cooler while doing it. And they are fairly cheap. Especially for my Big Red printer that has each stepper driving 2 motors I really wanted this upgrade. I want to run them in the same UART as the TMC2209's they will be replacing. I noticed that in marlin under configuration.h where I get to choose what stepper drivers I have I do not see TMC2226 listed as an option to choose. So I go to github and get the latest release of marlin. 2.0.7.2 and I make 4 copies of it label each for the printer it will belong to and begin the tedious task of comparing files and configuring the newer Marlin for each of my printers. And while doing this I noticed something. There is still no TMC2226 listed in the drivers above where I select which drivers I am using. This is the latest release of Marlin. So what the hell?I did some searching around and found this: https://www.reddit.com/r/BIGTREETECH...etech_tmc2226/ . I have already started the firmware upgrade and so I will finish it but it does nothing for me. I am pretty sure I just need to leave them set to TMC2209 and they will work just fine. Is there anybody else out there running the TMC2226 drivers in UART with the Marlin?