Duet 3 Scanning Z probe

[T3P3Tony]

@zapta I see what you mean. It would be slower than the scanning mesh on many machines (depending on Z speed) but would give the Z positions where the sensor reads the same all over the bed. I still don't think it will necessarily be any more accurate though.

[zapta]

@T3P3Tony, I see.

I am trying to find a way to speed up touch sensors such as BL Touch but this approach should apply also to other sensors types. My hypothesis is that if instead of a binary state they provide a small hysteresis-free continuous region around a known point, the meshing can be speed up significantly since it requires only minor Z adjustments during the scan to tack that point. Not much different from the mesh compensation during the actual printing.

Will see how it goes.

[CR3D]

I want to setup a Scanning Tool for our printers but can not find a wiring schematic in the documentation

Can you tell me how to connect pls?

Thank you in advance

[oliof]

@CR3D the PCB silkscreen points out what the pins are, I can see GND to the left, and C_L (CAN low) and C_H (CAN high) to the right. Second from the left is VCC then, this tracks with the connection description on the documentation page https://docs.duet3d.com/en/Duet3D_hardware/Duet_3_family/Duet_3_Scanning_Z_Probe#description-of-connections

The source for 5V depends on the board you use, on the Duet 3 mini 5+ I would choose 5V and GND from IO 4 due to proximity to the CAN header.

[bricor]

@CR3D

Disregard this post
see later post
Wrong board version

[droftarts]

@bricor That is a V0.1 development board (see PCB bottom right corner). The silkscreen has the CAN_H and CAN_L the other way around.

@CR3D The V1.0 boards are:
GND - 5V - CAN_L - CAN_H

Ian

[bricor]

@droftarts
Thank you for the correction. I grabbed the pic from the current doc.

[droftarts]

@bricor I know, I was going to do the same thing until I noticed it was different! So I took a picture of the one I had on my desk that I received earlier this week. @T3P3Tony will put up a proper wiring diagram soon, hopefully.

Edit: I've updated the documentation with the above picture: https://docs.duet3d.com/en/Duet3D_hardware/Duet_3_family/Duet_3_Scanning_Z_Probe#physical-connections

Ian

[CR3D]

Thanks to all!

[Killercds]

@ofliduet said in Duet 3 Scanning Z probe:

Is the STL / STEP for the probe holder availalbe that I see in the picture of the Revo toolboard?

Any updates on the availability of this specific mount?
It seems like it's a modified version of the PCB spacer
I would really like to integrate it into my E3D ToolChanger setup