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Is SD2209 the same as TMC2209 stepper drivers?

From what I can tell, the SD2209 is not a clone of or another name for the TMC2209, but is a board with a TMC2209 on it setup to be used as a drop-in replacement for other stepper drivers. See e.g. ...
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Can I use different sized steppers for different axes?

Each axis is fine using a different stepper size and/or quality. You will still need to tune their operating current and steps/mm for each of course. Make sure your motor mounts fit too. Where it ...
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2 votes

Will my 3D printer significantly get quieter after upgrading from Creality board 2.5.2 to BTT SKR Turbo 1.4

"Silent" board means TMC steppers. It has nothing to do with whether the microcontroller on it is 8- or 32-bit, and a 32-bit microcontroller will not in general get you any sound-reduction ...
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1 vote

"Unable to read TMC UART 'extruder' register IFCNT" - Klipper and Robin Nano

I had the same issue. In general, that means that the pins you specified doesn't work. "I declared a different pin for every driver": you don't need just "different pins", you need ...
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Error "TMC2208 or TMC2209 on Z2 requires Z2_HARDWARE_SERIAL or Z2_SERIAL_(RX|TX)_PIN

Your question is missing important information, but I can try to figure out something. You didn't say what kind of firmware it is. I assume it is Marlin. Your problem is that there are no Tx Rx pins ...
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