SOLVED Supported Z probe types on expansion boards / tool boards

oliof

I am slowly continuing to work on converting my printer to tool board. Today I connected my duet IR probe and was surprised by the fact that it's not supported:

Error: M558: M558: only Z probe types 8 and 9 are supported on expansion boards

Is adding Z probe type 1 on the list for supported probes on tool boards in the new future? Or should I run it in mode 8?

oliof

Hmm. This seems to have slipped by. Anyone?

dc42

You should run the IR probe in mode 8. All Duet 3 boarts have permanent pullup resistors, so the IR probe will start up in digital mode (2 flashes).

oliof

Thanks for the info! I tried mode 8 and the probe does not turn on (DWC says probe is not available). I'll see if I find another problem with my setup.

dc42

@oliof said in Supported Z probe types on expansion boards / tool boards:

probe does not turn on

What do you mean by that? Does the LED flash twice?

dc42

PS - also, which firmware version are you running on the expansion or tool board and the main board? You need 3.01-RC3 or later on both.

oliof

I am running 3.01-RC3 on both.

oliof

@dc42 the probe does not flash on turnup and there is nothing reported in the firmware. Everything else on the toolboard works.

oliof

OK, I found the problem: I was using IO1, which is only providing 3V, which does not seem enough to turn on the probe. Switching to IO0 with 5V solved the issue.

oliof

And now I have a new problem: Probe runs and probing for Z works, but after that the probe is stuck at 1000 in DWC and I can't do auto leveling with the multiple independent axes.

dc42

IO1 should work, however IO0 is intended for the Z probe.

I think the "stuck at 1000" is a firmware issue, I only tested with a bltouch, and I can see why that might behave differently. I will look into it.

dc42

PS - possible workaround for now: repeat the M558 command in the deployprobe.g file

oliof

The workaround helps! I wasn't able to get my independent z axis leveling script to run, but running the commands individually worked.

Thanks for your help!

dc42

There is a new firmware build at https://www.dropbox.com/sh/3azy1njy3ayjsbp/AACquxr2m00eV568RZg5QG5wa?dl=0 which fixes the original problem. I have tested it using an IR sensor with both the IO0 and IO1 connectors. The fix is in the main board firmware. However, if you don't already have the new tool board firmware installed, you will need it when you come to use the tool board stepper motor.

oliof

I am currently not using the tool board stepper motor. Will give this a run and report back (-:

oliof

With the new firmware, G28 Z is stuck in an infinite repeat loop. Only M999stops this, with the unfortunate drawback that the machine isn't homed anymore after an emergency restart (I triedM0andM1` and they do not get executed).

Here's my homez.g

; homez.g
; called to home the Z axis
;
; generated by RepRapFirmware Configuration Tool v2.1.8 on Fri Jan 31 2020 14:54:14 GMT+0100 (Mitteleuropäische Normalzeit)
G91                  ; relative positioning
G1 H2 Z5 F6000       ; lift Z relative to current position
G90                  ; absolute positioning
G1 X0 Y0 F6000       ; go to first probe point
G30                  ; home Z by probing the bed

; Uncomment the following lines to lift Z after probing
G91                 ; relative positioning
G1 Z5 F100          ; lift Z relative to current position
G90                 ; absolute positioning

And here is my probe definition:

; Endstops
M574 X1 Y2 S3 ; use stall guard for  XY endstops (X min, y max)
M574 Z1 S2       ; configure Z-probe endstop for low end on Z

; Z-Probe
M558 P8 C"10.io0.in" H5 F120 T600   ; set probe type, dive height + speed
G31 P500 X-29 Y0 Z0.977             ; set Z probe trigger value, offset and trigger height
M557 X-140:140 Y-140:140 P6         ; define mesh grid

dc42

Are you running in standalone mode or with attached SBC?

Does G30 sent from the console work OK?

oliof

I am running attached to an SBC. Just a G30 also loops.

oliof

G30 via pronterface does not loop. G30 via DWC loops.

dc42

Thanks, I've fixed that now. New main board firmware file for you in the same place.

oliof

The new firmware does not loop anymore. I am happily printing!