katod

Hi all, I also want to replace the A4988's on my Ultimainboard with TMC2208's, and I'm wondering if you could help me with some advice, because I think I'll be able to swap the QFN28 chips with a basic hot-air tool, but I'm not sure about the rest of the configuration: - as I see on the Trinamic application note they are compatible pin-to-pin with each other, but some adjustments are necessary on the board. Now , my questions are: - do I need to program/configure the TMC2208 prior to mounting it on the Ultimainboard, or it will just work in legacy mode by default? - do I need to replace/rewire some-other components on the board as well? I compared the Ultimainboard schematic with the application note from Trinamics and this is what I came up with so far: - so one capacitor needs to be removed , another-one changed, but I'm not sure about the resistors, can anyone help with some advice, the extract from Ultimainboard schematic with my intended changes are shown below, but I'm wondering if I'm on the right track or if I'm missing something, any help is highly appreciated: