Stepper motors going wild

[joohansson]

I have a duplicator 4x dual and use Sailfish v.7.7 firmware and Simplify3D 2.1.2 as slicer software. Sometimes during the starting g-code the printer does something totally different than my g-code. What I think happens is that some steppers motors going in wrong direction and/or at wrong speed. Extruder platform moving towards the board and I have to emergency stop it to not crash. Also the extruders mess up because they move in wrong direction or something (why do they move at all?). I usually have to clean them after this happens because they are messed up.

This has not yet happen when printer had a fresh boot up, only when printing from SD card second time, or third time.

Has anyone seen this? Is it wrong with firmware, printer, SD-card or simplify 3D? I´m using the exact same default starting g-code as replicatorG created for me (Replicator 1 dual printer).

I´ve not seen this with prints created in RepG but have not printed that much to say that it never happens

Starting G-code:

Code: Select all

(**** start.gcode for The Replicator
 dual head ****)
M103 (disable RPM)
M73 P0 (enable build progress)
G21 (set units to mm)
G90 (set positioning to absolute)
(**** begin homing ****)
G162 X Y F2500 (home XY axes maximum)
G161 Z F1100 (home Z axis minimum)
G92 Z-5 (set Z to -5)
G1 Z0.0 (move Z to "0")
G161 Z F100 (home Z axis minimum)
M132 X Y Z A B (Recall stored home offsets for XYZAB axis)
(**** end homing ****)
G1 X-110.5 Y-72 Z50 F3300.0 (move to waiting position)
G130 X20 Y20 A20 B20 (Lower stepper Vrefs while heating)
M6 T0 (wait for toolhead
 and HBP to reach temperature)
G130 X127 Y127 A127 B127 (Set Stepper motor Vref to defaults)
M108 T0
G0 X-110.5 Y-72 (Position Nozzle)
G0 Z0.2      (Position Height)
G92 E0 (Set E to 0)
G1 E4 F500 (Extrude 4mm of filament)
G92 E0 (Set E to 0 again)
(**** end of start.gcode ****)

[KeyboardWarrior]

I have a duplicator 4x dual and use Sailfish v.7.7 firmware and Simplify3D 2.1.2 as slicer software. Sometimes during the starting g-code the printer does something totally different than my g-code. What I think happens is that some steppers motors going in wrong direction and/or at wrong speed. Extruder platform moving towards the board and I have to emergency stop it to not crash. Also the extruders mess up because they move in wrong direction or something (why do they move at all?). I usually have to clean them after this happens because they are messed up.

This has not yet happen when printer had a fresh boot up, only when printing from SD card second time, or third time.

Has anyone seen this? Is it wrong with firmware, printer, SD-card or simplify 3D? I´m using the exact same default starting g-code as replicatorG created for me (Replicator 1 dual printer).

I´ve not seen this with prints created in RepG but have not printed that much to say that it never happens

Starting G-code:

Code: Select all

(**** start.gcode for The Replicator
 dual head ****)
M103 (disable RPM)
M73 P0 (enable build progress)
G21 (set units to mm)
G90 (set positioning to absolute)
(**** begin homing ****)
G162 X Y F2500 (home XY axes maximum)
G161 Z F1100 (home Z axis minimum)
G92 Z-5 (set Z to -5)
G1 Z0.0 (move Z to "0")
G161 Z F100 (home Z axis minimum)
M132 X Y Z A B (Recall stored home offsets for XYZAB axis)
(**** end homing ****)
G1 X-110.5 Y-72 Z50 F3300.0 (move to waiting position)
G130 X20 Y20 A20 B20 (Lower stepper Vrefs while heating)
M6 T0 (wait for toolhead
 and HBP to reach temperature)
G130 X127 Y127 A127 B127 (Set Stepper motor Vref to defaults)
M108 T0
G0 X-110.5 Y-72 (Position Nozzle)
G0 Z0.2      (Position Height)
G92 E0 (Set E to 0)
G1 E4 F500 (Extrude 4mm of filament)
G92 E0 (Set E to 0 again)
(**** end of start.gcode ****)

My initial reaction would be to say this is firmware related. To reset stock settings for the Wanhao though you could go to Help then Configuration Assistant and re-choose Wanhao and try some test prints. The stock Wanhao profile definitely works, if you're still having troubles then I would look into resetting/reflashing the firmware.

[jimmybuckets]

Damn man, I thought I was going to open this up and see hot topless stepper motors making out...
Could be a grounding issue. Poor grounding can cause irratic movement.