Best Z Probe for Duet 3 Mini 5+

zapta

Thanks @sinned6915. I think I found it, in the Docs by Printer folded section here https://www.euclidprobe.com/02-probe-docks-toolboard-mounts/ . I may give it a try. People are seems to be happy in general with this approach.

Pickett

@zapta its a knockoff 3d Touch made by RedRex whom seems to make good knockoffs. I was just interested in something better, more durable, can take more abuse than a sensitive BL TOuch or 3D TOuch for that matter so anyways yeah I will probably check out that EuclidProbe and see how that goes as it appears it has a good happy user base so I cant see anythimg wrong with giving it a go..... Thanks!

Pickett

Ill be installing that Euclid Probe into my Anycubic Chiron that I converted to utilize Linear Rods NOT Rails as I feel that Rails are a bit too stiff plus I like how the Rods look. So I essnentially am building a Prusa'fied Chiron but I like to call it Chiron LRE or Chiron 3.0 lols cause i really is. The Chiron 2.0 I had built used an BTT SKR 1.4 Turbo of which I used to think was THE best board one could get tht is til I learned abut the Duet3d boards!!!!!!!

sinned6915

@zapta the last probe i used was an IR probe.
I tried everything- I laminated the 0.04 pei to a piece of black anodized aluminum sheet to imporve the reflectivity.
Ambient light scatter still threw it off.
Hence the developement of the Euclid Probe.

zapta

@sinned6915 said in Best Z Probe for Duet 3 Mini 5+:

Hence the developement of the Euclid Probe.

It's a very elegant design. If you are the original developer of this concept, Chapeau!

tecno

@zapta said in Best Z Probe for Duet 3 Mini 5+:

@tecno, have you used IR with a PEI sheet (e.g. 1mm), if so, what was your experience?

I use PrimaCreator FlexPlate PEI and I usually have to baby step printhead down a bit.
Using backside to print PETG usually no babystep.

No mechanical probes for me anymore as I have had my share of big problems with that shit.

zapta

After reading this thread I decided to replace the Z probe on my printer with a stowaway microswitch kind, so built a Voron Clicky Probe from a swtich and magnets I had and its seems to work quiet well. It is definitely simpler than the standard Voron V2.4 z stop + induction probe arrangement and it measure the actual top surface which I prefer. Also added gcode to the pick/drop macros to verify that the probe is actually picked/dropped as expected for extra safety.

What is a good way to quantify the accuracy or consistency of a probe?

A Former User

This post is deleted!

zapta

@arnold_r_clark said in Best Z Probe for Duet 3 Mini 5+:

with a zero/zero offset to the nozzle

Can you explain this? Do you mean X offset? Y offset? Z offset? Something else?

CR3D

A lot of people use the CR-3D SupCRprobe... a temperature stabilized inductive sensor which works with extremely high repeat accuracy

https://www.cr3d.de/kategorie/elektronik/sensorik/

here e.g. in the C1mini with Duet 3 Mini 5+

pfn

@zapta This is what I do:

M98 P"k/probe-attach.g"
G1 X100 Y100 F18000
G30
G30 P0 X100 Y100 Z-9999
G30 P1 X100 Y100 Z-9999
G30 P2 X100 Y100 Z-9999
G30 P3 X100 Y100 Z-9999
G30 P4 X100 Y100 Z-9999
G30 P5 X100 Y100 Z-9999
G30 P6 X100 Y100 Z-9999
G30 P7 X100 Y100 Z-9999
G30 P8 X100 Y100 Z-9999
G30 P9 X100 Y100 Z-9999 S-1
M98 P"k/probe-detach.g"

If it isn't obvious, I too have a clicky probe (annex quickdraw in this case).

engikeneer

@pfn @zapta, you could even add attach/detach calls in between each of the successive G30's to test the repeatability of the pickup.

I have a similar test macro which does G1 moves between each probe to test for backlash affecting the probe etc

pfn

@engikeneer that's a really good idea, I should try that

zapta

@pfn said in Best Z Probe for Duet 3 Mini 5+:

If it isn't obvious, I too have a clicky probe (annex quickdraw in this case).

attach/detach, I called it picked/drop

Thanks, will give it a try, including attach/detach between each probing.

BTW, I do homing, auth leveling and mesh probing with hot bed, since it can also impact the results.

A Former User

This post is deleted!

PaulHew

My Euclid PCBs arrived today, in the UK.
Have everything ready apart from the magnets, unless I want to spend more on delivery than the magnets from USA.

I have run BLT originals on my RailCore / Voron2.4 and Ender3.
The RailCore struggles with back right corner with a BLT, nothing wants to stick to that area! Always too high.

Hoping the Euclid probe will alleviate that issue!

zapta

@pfn, I run 100 iterations of attach/probe/detach and got the message below

"G32 bed probe heights: -0.129, mean -0.129, deviation from mean 0.000"

Does it mean that I need to increase the Z value in my probe setting?

G31 K0 P500 X-2 Y19 Z9.1

Also, is there a way to get the 100 probing values or at least min and max?

echo "Home all"
G28

while iterations < 100
  ;echo "Probing " ^ {iterations}
  
  M98 P"/macros/clicky_pick"
  M98 P"/macros/z_current_low"
  M98 P"/macros/speed_probing"
  
  G30 P0 X127 Y106 Z-9999
  
  M98 P"/macros/speed_printing"
  M98 P"/macros/z_current_high"  
  M98 P"/macros/clicky_drop"

; ---------------
echo "Last probing"

M98 P"/macros/clicky_pick"
M98 P"/macros/z_current_low"
M98 P"/macros/speed_probing"
  
G30 P9 X127 Y106  Z-9999 S-1

M98 P"/macros/speed_printing"
M98 P"/macros/z_current_high"  
M98 P"/macros/clicky_drop"

echo "Clicky test done"

zapta

@arnold_r_clark said in Best Z Probe for Duet 3 Mini 5+:

The probe is not offset from the nozzle on either the X or Y planes, the switch is picked up from its dock and sits directly under the nozzle at a known distance below the nozzle hence Zero/Zero.

That's very neat. Thanks for the explanation. I thought that this is what you meant but didn't know how it can be designed.

pfn

@zapta your macro has a mistake it should be G30 P{iterations}

So you didn't get an aggregate result

The final G30 should be P100

Also, I'm a bit concerned, it says the probe result was 0.129mm lower than the homing probe. It could mean the mount is inconsistent.

With the correct P arguments, the result for G30 S-1 should list all probe values

zapta

@pfn, yes, you are right. Here it is after fixes. Not sure where the 0.109 offset comes from but my slicer is set to print at z offset of 0.1mm.

Is this a reasonable probe accuracy?

G32 bed probe heights: -0.120 -0.106 -0.110 -0.111 -0.114 -0.111 -0.110 -0.098 -0.111 -0.105 -0.100, mean -0.109, deviation from mean 0.006

var N=10

echo "Home all"
G28

while iterations < var.N
  echo "Iteration " ^ {iterations}
  
  M98 P"/macros/clicky_pick"
  M98 P"/macros/z_current_low"
  M98 P"/macros/speed_probing"
  
  G30 P{iterations} X127 Y106 Z-9999
  
  M98 P"/macros/speed_printing"
  M98 P"/macros/z_current_high"  
  M98 P"/macros/clicky_drop"

; ---------------
echo "Last probing"

M98 P"/macros/clicky_pick"
M98 P"/macros/z_current_low"
M98 P"/macros/speed_probing"
  
G30 P{var.N} X127 Y106 S-1 Z-9999

M98 P"/macros/speed_printing"
M98 P"/macros/z_current_high"  
M98 P"/macros/clicky_drop"

echo "Clicky test done"