Duet 3d did not consider

jhonf441

I am a user of duet and its excellent service, with the arrival of duet 3 I wonder if there is the possibility of updating hardware for users who use on one or more axes, servomotors or closed loop stepper motors, which necessarily require drivers of external.

Veti

there is the extension boards that are in development.

see for example
https://duet3d.dozuki.com/Wiki/Duet_3_Expansion_Hardware_Overview

dc42

We are currently prototyping a CAN-connected single-driver expansion board with 5V outputs for step-servo drives and similar.

jhonf441

Of course, but this means that you must buy expansion cards by obligation and not by necessity, it does not seem the most just solution.

bot

Are you saying that you want to use the external drivers that you already have, instead of buying the duet expansion cards?

jhonf441

I use this type of motors that need an external driver to make the closed control loop, if I want to use duet 3, I would need to buy part of the main board, buy expansion boards even when I only use 6 motors.

fcwilt

@jhonf441 said in Duet 3d did not consider:

I use this type of motors that need an external driver to make the closed control loop, if I want to use duet 3, I would need to buy part of the main board, buy expansion boards even when I only use 6 motors.

True, very true.

But if they put support for that sort of thing on the main board then we all would have to pay more and it's likely few of us would get the benefit.

Frederick

dc42

In time we may do a main board variant that supports e.g. 3 internal and 3 external drivers. We are also looking at including encoder interfaces on some boards so that we can do closed loop control.

Veti

@jhonf441 said in Duet 3d did not consider:

buy expansion boards even when I only use 6 motors.

i am going out on a limb here, but if buy more than on of those HBS57 its going to be the same price if not more.

3DPMicro

@dc42 said in Duet 3d did not consider:

We are also looking at including encoder interfaces on some boards so that we can do closed loop control.

That will be sweet