my delta printer seems to have a mind of its own
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It might just be a perspective trick, but is the effector level at all times in that video? It looks to me like it's tilting, based on the way the bubble in the spirit level is moving. Are you using the Duet3D PCB magnetic carriage adapters?
Also, difficult to tell in the video, but is the effector registering a hit when it stops in mid-air at 40 seconds?
adavidm
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I agree with adavidm, you may be getting a false trigger. When it stops before reaching the bed, does the green LED on the effector flash?
If yes -> false triggering due to too much vibration, or possibly a faulty effector. Please run M350 to check that you are running x16 microstepping with interpolation enabled. From the video, your machine does sound a little noisy when probing, so perhaps you are using lower microstepping, or no interpolation.
If no -> check that the connections between the 8-way connector on the effector and the Duet are sound.
Duet WiFi hardware designer and firmware engineer
Please do not ask me for Duet support via PM or email, use the forum
http://www.escher3d.com, https://miscsolutions.wordpress.com -
The effector IS tilting. It is very clear when the video is played several times. This indicates a problem with the mechanics. Nothing will work until this is cleared up.
Please post a photo of the carriages. There is one very blurry frame where the carriages show... and there seems to be no sign of the carriage adapters. They are the rectangular things in this photo.
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@danal said in my delta printer seems to have a mind of its own:
The effector IS tilting. It is very clear when the video is played several times. This indicates a problem with the mechanics. Nothing will work until this is cleared up.
Please post a photo of the carriages. There is one very blurry frame where the carriages show... and there seems to be no sign of the carriage adapters. They are the rectangular things in this photo.
They are not fitted as they would not fit to the carriages so I printed one with the measurements on the site with one that would fit
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@adavidm it measures a hit when it's sitting still on and off.
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@dc42 as per config file above
M350 X16 Y16 Z16 I1
M350 E8 ; Configure microstepping with interpolation -
Could it be the tower is too tall at 1000mm
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@dmkmedia said in my delta printer seems to have a mind of its own:
Could it be the tower is too tall at 1000mm
I have a working delta with 1500MM towers (that have 1000MM linear slides) and 700mm Hayden Huntley arms. At this instant, that printer is powered off due to the room that it is in being flooded (long story), so I can't easily retrieve the config.
Just wanted you to know that printers that big or bigger do work.
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And, I believe you have at least two problems to clear up: False trigger (which others can help you with) and a mechanical problem that is tilting your effector. Until the effector tilt is fixed, nothing else is going to work correctly.
If you measure between a pair of diagonal rods, near the effector, is this the EXACT same as a measure between the rods near the carriage?
Sorry for crappy backlit photos... but they will get the idea across.
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@dmkmedia said in my delta printer seems to have a mind of its own:
They are not fitted as they would not fit to the carriages so I printed one with the measurements on the site with one that would fit
As others have said, it's almost certainly the source of the tilt and you must fix this before going any further. the rod pairs need to be absolutely parallel for the effector to stay level. One of the clever aspects of the Smart Effector design was in using the excellent precision of a manufactured PCB to ensure that the Mag ball holes are perfectly spaced.
If you are getting false readings from the strain gauge on the Smart Effector, that's going to prevent auto calibration from working. Worth double-checking crimps and any other connections, just in case you are getting an intermittent connection fault.
For now, I'd concentrate on the tilt issue. If you can take a clear photo of your carriage mounts, maybe someone can offer advice on how to get the PCB adaptor to fit.
adavidm
