@jay_s_uk sorry about that had a brain fart moment, I understand now I got confused because the link you provided says those drivers are supported but that's for the LPC boards I assumed it meant RRF in general has support for those and since Duet is running RRF I assumed it could drive them but I get it wasn't designed to support them via hardware well it does but I'd lose a lot of functionality. I get it now it's the same thing with those marlin boards some support the UART, or SPI but never both interfaces because the pins are not broken out, etc. Thanks for all your help Jay, I'm barely learning RRF and getting into the Duet ecosystem.

@jay_s_uk sorry about that had a brain fart moment, I understand now I got confused because the link you provided says those drivers are supported but that's for the LPC boards I assumed it meant RRF in general has support for those and since Duet is running RRF I assumed it could drive them but I get it wasn't designed to support them via hardware well it does but I'd lose a lot of functionality. I get it now it's the same thing with those marlin boards some support the UART, or SPI but never both interfaces because the pins are not broken out, etc. Thanks for all your help Jay, I'm barely learning RRF and getting into the Duet ecosystem.

@jay_s_uk I didn't know about this thanks for the info. If I'm understanding this correctly duet boards can drive TMC drivers like the ones that come with the BTT/MKS boards, the drivers in the pololu driver style PCB? I ask because I have plenty of TMC2208/9s.

@jay_s_uk thank you for the reply guess I'll just look into getting the maestro and saving my Duet WiFi for another build

Did you ever get this to work? I have a Duet WIFI and was wondering if I could use the Maestro Stepper Expansion Module as it is much cheaper than the Duex5 and all the Duex2 are out of stock everywhere!