I just got teacup to compile for rambo, and 2560 chipset. it still needs pin assignments. after i test the motion, I'll try to implement delta motion, at least well enough that someone else can do it better.
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github.com]
it compiles but pin assignments have not been verified as of yet. it is a copy of the 1280.h and the gen7 config file, also error traping for cpu has been removed and needs to be replaced. give me some time.