Another Predator

[Carlo]

@jay_s_uk

Thanks Jay appreciate it ...Ahh Ireland wonderful place!

Read on return..
honestly I think the board has an issue as nothing else seems amiss
Also you have already helped !

[Phaedrux]

I'm not a delta user, so I'm limited in what to suggest, but I do often see problems like this being solved by finding a mechanical issue. Loose carriage, stuck wheel, wire pulling taught, stuff like that. In the absence of better advice, might be a good time to go over it with a fine toothed comb.

[Carlo]

@Phaedrux

Thanks,
I'm no expert either but this things been gone over more time than a Williams F1 car surely there would be an indication in the mesh if there is movement ? dimensional issues this was done a few mins ago I get one map being ok ish luckily but all of them looking very similar as I said i'm not even experienced in 3d printing ..maybe I've been lucky until now maybe i'll just revert it back to the original configuration.

heightmap.csv

[Phaedrux]

rather than the csv, can you post a picture of the resulting heightmap?

[Carlo]

@Phaedrux

Here we go,

Cheers

[Carlo]

So I thought I'd throw the original board back in and test for dimensional issues or mechanical issues as suggested
and well found nothing except it print fine in fact its better than the print I got off it previously no stringing at all granted my testing is not substantial or very scientific even but it does suggest the actual dimensional built is good enough to get an actual print and that's not stock literally did one z probe and using printed effector adapter ends for the magballs and rods from Haydn.

Any ideas ?

Cheers

[dc42]

Please share your bed.g file.

Have you measured the trigger height of the strain gauge sensor? It's set to -0.1mm in your config.g file, but if the bed is soft then you might need to change it to a more negative value.

When you run auto calibration, what deviation does it report at the end?

For best results, use this sequence:

• Home the printer
• Heat the printer (bed and extruder) up to operating temperature, or close to it
• Run auto calibration (and don't re-home at the end of it)
• Start the print without homing it again

A well-built delta printer using the Smart Effector and a flat bed doesn't need mesh bed compensation. If you do use mesh bed compensation by loading a pre-made height map using G29 S1, do a single G30 probe at bed centre after loading the height map.

[Carlo]

@dc42

I have tried all of that
I always pre heat
My config is set to 0.1 when starting a test again
Generally it returns .12 which I’ve set it to in the config on the G30 single probe
Not set it and left it at 0.1
I don’t home after a single probe or delta calibration
Have tried with mesh and without
Home ,G30 Z0 then probe
Home probe then G30 Z0
I’m not sure there is a way I have not tried
I’ve slowed my FR down
Sped it up reduced my travel speed sped it up

The maps look right though do they as I don’t know if the are?
I follow the guides and suggestions from the good people here
I’ve used other config as a starting point as well configured from scratch

Always with the same result exactly the same.
So it is either something I am doing every single time and we are talking hundreds of time
Or it’s a constant issue that doesn’t appear with the original controller.
So would suggest not mechanical.

Cheers

[dc42]

You haven't answered some of my questions:

Have you measured the trigger height of the strain gauge sensor? it looks to me that you are starting printing too high, which suggests that your trigger height isn't set correctly.

Please share your bed.g file.

[Carlo]

Hi,

Bed.g
; bed.g file for RepRapFirmware, generated by Escher3D calculator
; 10 points, 6 factors, probing radius: 175, probe offset (0, 0)
G30 P0 X0.00 Y175.00 Z-99999 H0
G30 P1 X151.55 Y87.50 Z-99999 H0
G30 P2 X151.55 Y-87.50 Z-99999 H0
G30 P3 X0.00 Y-175.00 Z-99999 H0
G30 P4 X-151.55 Y-87.50 Z-99999 H0
G30 P5 X-151.55 Y87.50 Z-99999 H0
G30 P6 X0.00 Y87.50 Z-99999 H0
G30 P7 X75.78 Y-43.75 Z-99999 H0
G30 P8 X-75.78 Y-43.75 Z-99999 H0
G30 P9 X0 Y0 Z-99999 S6

I've tried a few trigger heights as per documentation initially stating higher until calibration is done
trigger height of the strain gauge sensor? is that not -.12 ?
Glass build plate as far as I know
I have tried it with as far as -.2 even though on the single probe indicates -0.12 although I do appear to have a pit forming at the center now.

Cheers

[Carlo]

So to sanuty check I rewired the Duet 2 Ethernet board and Smart Effector with silicone rated to 7A all went without issue all working as it should no errors ...well you know except still won't print a layer.

Is it possible the sensitivity is not right on the Smart Effector or has an issue?.
Anyone had a similar issue ?

Thanks C

[jay_s_uk]

I know there was a bug in the smart effector firmware that won't allow you to adjust the sensitivity.
@dc42 would need to confirm when this was fixed and whether yours will be affected.

I binned off my ultrabase print surface so I'm not sure whether the sensitivity needs adjusting for it.

[Carlo]

@jay_s_uk
Ahh OK..why change your bed surface may I ask ?

[Cabaret]

I would prefer switching to firmware 2.05.1.

[jay_s_uk]

@Carlo
I found it would lose its ability to let plastic stick to it.

I now have a removable print surface and it works very well

[Carlo]

@Cabaret
I have tried that particular flavor with no change.

Cheers

[Carlo]

@jay_s_uk
Ah odd never had an issue with them my ender won't let go until I hear the crackling.

[Carlo]

@Carlo
OK so I tried again now I mentioned that the motion is odd and it will accelerate mid print move the below image
illustrates this everywhere the print has gaps is an acceleration or travel when it should be extruding its travelling mid
print.
That's Odd right ?
Single probe before print no mesh enabled.

Initial layer is 40mm/s
Thoughts?

[Carlo]

Hi,

Is it worth doing a wipe of the firmware and start again? as I mentioned this thing doesn't know what its doing
when I do a delta calibration it probes at varying speeds across the bed really fast double tap moves and does a really slow double tap then slow then randomly mixes it up also the end stops are suddenly as much as -10mm + 7mm off
Or is it time to just write the board off?

Cheers
Carlo

[Phaedrux]

You can upload the 2.05 zip file and it will update everything to that version. Worth a shot.

Would it be possible to post a video of the behaviour you're describing?