Hi Matt,
thanks for clarifying this. So it remains a challenge to minimize chip count for driving three steppers, each 2.5A and having current sensing for SimpleFOC. Looks more like using four BTN8982 and two INA240 per axis is the way to go…
Still undecided if I can piggy-back this onto NEMA17, including the encoder. Or I put the stuff for three axes onto one bigger board, minus the encoders. But then i might have EMI issues with the encoder wiring through the energy chains, needing differential drivers.
Regards
Peter