BigTreeTech BTT Octopus Pro + Mellow FLY HV-TMC5160 V1.2 48v by Marco Prunca

Wiring diagram

I thank Marco Prunca for giving information to realize this scheme
that I can’t find on the web.

N.B. Mellow FLY HV-TMC5160 V1 has a different colour order on the cable than HV-TMC5160 V1.2.

The Stepper Motor connected to the FLY HV-TMC5160 is powered only
by the dedicated clamp (VCC GND) on the pcb of the stepper driver:
the rainbow cable carries only the power to manage the stepper driver chip (TMC5160),
not to power the stepper motor.
The 78M12 Voltage Regulator chip under the “stepper adapter board” cannot works with 48v (max 35v),
so don’t power it putting the jumper on Motor Power if you use 48v
connected to Motor Power clamps of the MCU board (ex: BTT).

This Mellow FLY HV-TMC5160 can be connected and powered in HV (High Voltage)
with other MCU boards like BTT SKR3, Manta etc…
keeping the jumper on the 24v (MB Main Power),
and not to “Motor Power” (if it is powered at 48v)
so you can omit to connect 48v to Motor Power clamps (where exists).

You can use Mellow FLY HV-TMC5160 with
MCU boards without HV jumpers or without support to HV
like MKS Robin Nano and similar.