@jay_s_uk oh ok tought that XD1 mcu could handle it since it has one driver output. Good to know. Also didnt noticed that mini5+ has also canFD also good to know. I was planing using 3HC expansion but using mini5+ makes more sense for Z.

Thanks!

Hi, I need some advice :)!

I'm looking into a new build and would like to use the Duet 6HC. I found interesting setup that I’d like to try, where it consists of four strong stepper motors for Y and two smaller ones for X. (would post link to igmur of setup in question but dont have the reputation yet )

Since I’ve never used more than two steppers on XY (let alone six), I’m a bit worried about potential issues caused by step delays between motors.

I thought that wiring the steppers in parallel to the drivers might help with this issue to some extent. However, the steppers I have for the Y-axis are 3A (I’ll probably run them at 2.5A), and I assume the 6HC driver wouldn’t be able to handle two of them in parallel, even with additional cooling.

So I’d probably need to run just XY on five drivers (with both X motors connected in parallel to a single driver).

This brings me back to step delays. Is there a significant delay between steps that could cause some issues? Is there a better approach to this? Maybe using external drivers connected to a 1XD expansion board?

Also, would I start hitting MCU limits with this setup? Running five drivers for XY, plus an extruder and triple Z, sounds like a lot of steps to generate.

Sorry for the many questions, but I want to do my homework before committing!

@dc42 Ohh thanks a lot for explaining that!

I was asuming it would MCU would iterate over drivers and send signal to one driver at a time... Well iam happy that i asked then...

Well that means gotta go order 6HC! ....

@dc42 Ohh thanks a lot for explaining that!

I was asuming it would MCU would iterate over drivers and send signal to one driver at a time... Well iam happy that i asked then...

Well that means gotta go order 6HC! ....

@jay_s_uk oh ok tought that XD1 mcu could handle it since it has one driver output. Good to know. Also didnt noticed that mini5+ has also canFD also good to know. I was planing using 3HC expansion but using mini5+ makes more sense for Z.

Thanks!

@jay_s_uk Yeah i guess should be fine, and incase its no i guess 1XD with 4 slave drives should work also . Also i guess if there is any delay between steppers belts should compansate

Hi, I need some advice :)!

I'm looking into a new build and would like to use the Duet 6HC. I found interesting setup that I’d like to try, where it consists of four strong stepper motors for Y and two smaller ones for X. (would post link to igmur of setup in question but dont have the reputation yet )

Since I’ve never used more than two steppers on XY (let alone six), I’m a bit worried about potential issues caused by step delays between motors.

I thought that wiring the steppers in parallel to the drivers might help with this issue to some extent. However, the steppers I have for the Y-axis are 3A (I’ll probably run them at 2.5A), and I assume the 6HC driver wouldn’t be able to handle two of them in parallel, even with additional cooling.

So I’d probably need to run just XY on five drivers (with both X motors connected in parallel to a single driver).

This brings me back to step delays. Is there a significant delay between steps that could cause some issues? Is there a better approach to this? Maybe using external drivers connected to a 1XD expansion board?

Also, would I start hitting MCU limits with this setup? Running five drivers for XY, plus an extruder and triple Z, sounds like a lot of steps to generate.

Sorry for the many questions, but I want to do my homework before committing!