New firmware 1.17 RC1
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I said I removed the max average printing acceleration parameter in M201, not the standard M201 command parameters. I think very few people knew that extra parameter existed.
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You're right, I never heard this parameter….
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Me neither. I checked here before I posted and there is no mention of it http://reprap.org/wiki/G-code#M201:_Set_max_printing_acceleration.
Anyway, no worries (although if the sentence had read "Removed maximum average printing acceleration parameter from M201" rather than starting with "Removed M201….........." it would have had a less traumatic effect on my blood pressure)
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Ok, I just changed the text to reduce confusion.
I plan to implement M202 as well in 1.18 to provide even more control over acceleration.
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Thanks - blood pressure back to normal
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Is there a difference between "G29 S1" and "M375"?
And while we're at it - is there a difference between using "M557" and "G29" or just using "G30 P…" for bed compensation? -
G29 S1 and M375 do the same.
M557/G29 and using G30 P commands in a bed.g file do different things. The bed.g file allows you to specify all the XY coordinates and also probe trigger height corrections, but you are limited to 5 points and there is no tapering. G29 allows many more probe points but because the coordinates are computed from the grid parameters, there are no trigger height corrections.
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With the grid compensation tapering off feature, I presume if I am running 1.17 rc1 and have not specified an M376 command the compensation continues for the whole object? I only ask as I installed this firmware today and printed two 50mm tall cylinders. They have both come out slightly sloping i.e. x/y not perpendicular to Z. I am running a delta with a tooling plate bed, I've never seen any object sloping before. I cannot be certain the bed is absolutely perpendicular to the towers.
My console showed
22:23:42Done printing file
18:23:5718 points probed, mean error -0.01, deviation 0.07
Height map saved to file heightmap.csv
18:23:32G10 P0 S180
18:22:54Calibrated 7 factors using 10 points, deviation before 0.100 after 0.036
and my height map
RepRapFirmware height map file v1 generated at 2016-11-15 18:23, mean error -0.01, deviation 0.07
xmin,xmax,ymin,ymax,radius,spacing,xnum,ynum
-120.00,120.10,-120.00,120.10,140.00,60.00,5,5
0, 0.099, -0.030, -0.101, 0
0, -0.034, -0.035, -0.059, -0.194
0.014, -0.031, 0.030, 0.034, -0.103
0, 0.066, 0.074, 0.056, 0.095
0, 0, -0.028, 0.014, 0 -
Yes the compensation continues throughout the print by default. Can you post pictures, and also try the same print without using grid compensation?
Also, after a skewed print, please run M122 and see if any step errors were recorded.
Your bed map does appear to have a tilt towards the high X low Y corner, but only a fraction of a mm. However, it might be caused by effector tilt changing the Z probe trigger height rather than a real tilt.
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Okay so tried a few f/w versions and grid compensation on and off, still skewed so it's not firmware. Will start a new thread see if anyone had any ideas. https://www.duet3d.com/forum/thread.php?pid=5895#p5895
