@loermansa Since there is no activity here and Sim-pli.city sales doesn't reply to emails anymore, I've decided to convert my SW20v3 to an OpenFFBoard build. The plan is to use as much of my current setup as possible such as cables, plugs, power supply, casing and motor. The rest I'll have to source elsewhere based on OpenFFBoard design. I haven't opened my case yet, so I don't know how much I can actually reuse but assuming I can reuse the above items, I've made the following BOM (Bill of Materials) and where to get them:
Open FFBoard ~ € 31
Open FFBoard TMC4671 driver kit ~ € 145
OpenFFBoard case ~ € 5
MT6825 based encoder module and magnet ~ € 6
We need a separate encode because the SW20v3 encoder is not supported by OpenFFBoard. The BOM will set you back approx. € 187 so not too bad.
I'll need to mount the encoder to the rear of the motor in place of the Tamagawa one and am thinking of somehow reusing the case of the Tamagawa encoder. Either that or I'll have to design and print a bracket. We'll see. OpenFFBoard is not a turn-key solution and will require software configuration but I'll cross that bridge when I get there. The community and the projectlead, Ultrawipf are very active on Discord so there's plenty of help.
I'll add to this thread if and when I make progress.