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bigtreetech / BIGTREETECH-SKR-V1.3

32bit board with LPC1768, support marlin2.0 and smoothieware, support lcd2004/12864, On-board TMC2130 SPI interface and TMC2208 UART interface no additional wiring is required
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BLTouch inconsistent on SKR V1.3 #89

Open GForce2010 opened 5 years ago

GForce2010 commented 5 years ago

I have an Ender 5 and I am trying to install a SKR V1,3 board.

I got everything setup and working but I am am seeing some inconsistent probing from my BLTouch

I ran the M48 command to test the same spot 50 times and it came back with the following result.

Mean: -0.007857 Min: -0.020 Max: 0.002 Range: 0.023 Standard Deviation: 0.007018.

I then enable the setting so every probe was followed by a second slower probe and got this result.

Mean: -0.022827 Min: -0.037 Max: -0.009 Range: 0.029 Standard Deviation: 0.006667

In an attempt to rule out problems with my BLTouch I resinstalled my Creality 1.1.4 board and did another 50 tests with this result.

Mean: -0.050627 Min: -0.055 Max: -0.040 Range: 0.015 Standard Deviation: 0.006219

Can somebody please advise as to why my range is double on the SKR board?

This is causing issues as I dial in the Z Probe Offset during a test print but the next print is either too close, too far away or a combination of both.

Thanks.

skorokithakis commented 4 years ago

I have the same problem. Every print needs me to adjust the offset. This is worse than using a manual endstop, which I never had to touch, at least.