There's RADDS running well on RRF. The TMC2100 is even quieter on an 32bit board than on 8bit.
Why not use a single RAPS128 driver for two steppers, they are quiet too and have plenty of power.
Z axis doesn't have to be quick...
Edited 1 time(s). Last edit at 10/24/2017 12:05AM by o_lampe.