sensor ir

[A Former User]

@jumpedwithbothfeet no

[fcwilt]

@sgk said in sensor ir:

@fcwilt
you can tell me what they are

Sorry but I don't understand what you mean.

Frederick

[A Former User]

@fcwilt sorry which thread

[fcwilt]

@sgk said in sensor ir:

@fcwilt sorry which thread

You said "you can tell me what they are".

I don't know what you mean by that.

Frederick

[A Former User]

@fcwilt sorry my translator is kidding

[fcwilt]

@sgk said in sensor ir:

@fcwilt sorry my translator is kidding

OK I will post again my question again:

OK can you do this:
- Disconnect the connector from the IR Sensor
- Using a small piece of wire or equivalent connect the signal and ground pins of that connector and check the DWC Z probe reading
- Then do the same but connecting the signal and power pins

Frederick

[A Former User]

the probe works but when I do g30 s-1 the bed stays at a great distance from the nozzle as in the photo

[A Former User]

[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