AnHardt

The BTT SKR PROs have 3 SPI-buses. Marlin, in general, is able to use all of them. It's Adafruit_MAX31865 library what does not allow to select an other than the...

Yes - one could. But it also has no pins to connect the SPI-bus to. So it's has no advantage over soldering wires/pins directly to the mainboard at the SD-Card-slot...

On this board VREF+ is not different from VCC_3.3V and VDDA is not accessible - so yes for the 3.3V. On this board we have more or less separate systems...

# **Yes!** Do you really have to be that loud - always? (big fonts) My eyes are bleeding. :-) At least for now. One days this will be properly configurable...

One side of the cable is a sd-card with some wires. The other a sd-card-socket with some wires. To make that work the wiring has to be straight, one by...

8 pins have 7 gaps. 8+7 = 15. Yes, likely there are GND in between - even if having 3 GND lines together does not make sense - maybe additional...

Please update to the complete facts. Use 20 if module supply is the same for module and ADC-reference. For the SKR PRO, if the module allows, 3.3V / 3.3V. For...

No. Meanwhile MAX31865 is integrated into Marlin. That message is from a wile before that. So likely the appended `temperature.cpp` is to old to not cause problems.

That's a problem in `Adafruit MAX31865 library`. Use a recent Marlin and compile with PlatformIO. The newer versions of `Adafruit MAX31865 library` are purposely excluded (MAX6675_IS_MAX31865 = Adafruit MAX31865 library@~1.1.0)....

Nonsens! https://www.electronics-notes.com/articles/electronic_components/resistors/smt-smd-resistor-codes-markings.php chapter 3. A SMD resistor marked "431" **has** 430 Ohm