sensor ir

[fcwilt]

@sgk

If you move the bed away from the probe, say to Z=5, does then doing a G30 or a G30 S-1 result in the bed moving and triggering the probe?

Frederick

[A Former User]

@fcwilt yes

[A Former User]

@fcwilt

[A Former User]

the bed remains loing of the nozzle

[A Former User]

This post is deleted!

[fcwilt]

@sgk said in sensor ir:

@fcwilt yes

OK so the probe IS working.

After doing a G30 or a G30 S-1 it is normal for the probe to end up a small distance away from the bed.

That distance is the dive height (the H parameter of M558) plus the Z Trigger Height (the Z parameter of G31).

Does that appear to be what is happening when you do a G30 or G30 S-1?

Frederick

[A Former User]

@fcwilt yes

[fcwilt]

@sgk said in sensor ir:

@fcwilt yes

OK do this:

• Move to Z=5
• Execute a G30
• Carefully using the Z "jog" buttons on the DWC move to Z=0
• Check to see if the nozzle is just touching the surface of the bed

Frederick

[A Former User]

@fcwilt no

[fcwilt]

@sgk said in sensor ir:

@fcwilt no

I see the Z reading is -1.00 - is that with the nozzle just touching the bed?

Frederick

[A Former User]

@fcwilt yes

[fcwilt]

@sgk said in sensor ir:

@fcwilt yes

OK that indicates the Z Trigger Height parameter of the G31 is wrong.

If after doing a G30 and then moving to Z=0 if the nozzle is not just touching the bed you need to increase the Z Trigger Height parameter of the G31.

If the nozzle touches the bed before you get to Z=0 then you need to decrease the Z Trigger Height parameter of the G31.

Of course when you make a change to the G31 command it needs to be executed for that change to take effect.

When you have found the correct value for the Z Trigger Height parameter of the G31 then when moving to Z=0 after doing a G30 the nozzle should just touch the surface of the bed.

Frederick

[A Former User]

now i'm at the top of the leaf

[A Former User]

it's good everything works thanks to everyone for your invaluable help

[A Former User]

@sgk

[fcwilt]

@sgk said in sensor ir:

it's good everything works thanks to everyone for your invaluable help

Glad to hear it.

Frederick

[A Former User]

@fcwilt thank you again thank you

[SIam]

@sgk said in sensor ir:

Small objection from me

@jumpedwithbothfeet no

I don't think that this solves your Problem, but you're running an old DWC Version ....

https://github.com/Duet3D/DuetWebControl/releases/tag/3.2.0

[A Former User]

@siam
i will update now

[A Former User]