Faulty z-probe on Smart effector
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@dc42 said in Faulty z-probe on Smart effector:
magnification
I does all my fisrt testing without fans and it was already triggering.
Then I tried the card alone with only the z-probe connected, with the same result.I will watch and try to send a magnified photo
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If you have a multimeter, please see this post https://forum.duet3d.com/post/25242 (the one from me dated 1 September) to see how to measure the resistances of the strain gauge traces.
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So it's not easy to see even with a 30x magnifying glass.
I can see the filaments but I do not know if they are cut or if there is a contact.
Below, it's a little blurry but it's representative of what I can see :
I will make some resistance measurements tonight.
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So I took some resistance measures.
I did not dismount everything, just unplugged the 8-way connector.
Between r11 and r13 I have 0.03 Ohm and r11 and r14 I have 16.60 Ohm... -
I think you have probably measured using the wrong end of one of the resistors. There are better instructions for measuring the resistance at https://forum.duet3d.com/topic/9038/smart-effector-z-probe-no-longer-working/7.
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Yes, I saw this thread too before make measures.
I took the measurements as shown between R11 right and R13 R14 left several times.
I can try again. -
A short across one of the traces would certainly explain why the probe isn't working. But I can't envisage how such a short would occur.
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Indeed, I made a mistake on the units on my mulimeter, but I still have this important differences between the two resistors.
I have for r11 - r13 : 35 ohm
And for r11 - r14 : 16.6 kohm -
Looks like the R11-R14 trace is broken. If your Smart Effector is under warranty and you didn't cause the damage yourself, ask for a replacement.
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Ok, I will contact seller.
For information, r11-r14 corresponds to what trace, upper or under side ? -
R11-R14 is the upper side.
