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bigtreetech / Eddy

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Nozzle crash after performing Z_TILT_ADJUST with the Eddy coil #55

Closed cssi-dev closed 1 week ago

cssi-dev commented 1 month ago

I tried printing the first part after switching to the new probe. I was suprised to learn, that my print was canceled during the print start macro. Error:

probe triggered prior to movement

with horizontal_move_z: 5

So I switched it to horizontal_move_z: 10(even though In the bed section the horizontal_move_z is just 2 ), to then get the nozzle crash because the printer after getting all the readings moved all z axes way to far.

I get that you are not supposed to use the eddy coil for homing because of the temprature drift. But please let us use the Tilt adjust. I don't want to switch every 5-10 prints between the probes just to readjust the z axis when it gets out of wack.

Steps to reproduce:

Home the Printer Start Z_TILT_ADJUST Be ready to shutdown the printer befor something bad happens klippy.log

Edit: added relevant config config-20240821-015955.zip

Edit 2: I found out why it crashed! The probe stays in the open position. no matter if it touches the bed or is far away. Steps to reproduce: move probe far away from the bed QUERY_PROBE move the bed close to the sensor / hold a heavy metal part in front of the sensor QUERY_PROBE

cssi-dev commented 3 weeks ago

Since it seams that I won't get an answer any time soon, can you at least point me to the correct file so I can at least try to creat a fork with a fix. Thanks already

BTTJUSTIN commented 1 week ago

Thanks for reporting. We will get our engineering team to look into this.

cssi-dev commented 1 week ago

Thank you for your response. The klipper support and I already found a solution.(The initial z offset was way to low). I would advice to change the guide so that it is no longer inside the Probe itself and that it has to be calibrated with the Probe query command (which is still missing). By the way is temprature compensation apperently always requiert since ztilt only works when you do the calibration(even if you would not need it)

bigtreetech commented 1 week ago

Thank you for your response. The klipper support and I already found a solution.(The initial z offset was way to low). I would advice to change the guide so that it is no longer inside the Probe itself and that it has to be calibrated with the Probe query command (which is still missing). By the way is temprature compensation apperently always requiert since ztilt only works when you do the calibration(even if you would not need it)

That is not how Z-offset works with these probes. See the FAQ section of the readme in this repo for a link to an explanation of how z-offset works with these probes. It is very different to standard z-offset and the query_probe command has no meaning.