@Razani

I beg your pardon for first misleading answer...

Looks like it depends on your 5V power source anyway (D10 for external, D32 for internal regulator).

@Razani

I beg your pardon for first misleading answer...

Looks like it depends on your 5V power source anyway (D10 for external, D32 for internal regulator).

@DavidSummerlin

Here is simplified DXF of 6XD.

Duet3 - 6XD.dxf

Thank you for your reply.

@jay_s_uk

I have couple of 1XD for Z-axis motors and it works just fine but unfortunately it can not handle 220-250 kHz step rate needed for XY-axes (maybe it could be a good idea to develop hi-speed version of 1XD).

6XD itself is more than enough for my task and I have two boards in work right now. 6HC is one of my first Duet boards and it works great for several years now I just want to prolong it's life in new project.

STM32H7? I can get any STM32H7 development board and connect it via CAN-FD?

@dc42

Yes 4 output pins looks like fair price for external drives. Enable signal does not that important and XY-axes drives definitely can share it (so OK, it is 5 pins needed).

Hi-Speed logic level shifter adds something around $6-10 and it is OK I think.

Hi all!

Is it possible to hookup 2x external servo drives to 6HC without using 1XD? Can I use I/O pins while sacrificing some minor functions? High step rate needed.