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lance-greene

firmware bug with E3D UM2 extrusion upgrade

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Posted · firmware bug with E3D UM2 extrusion upgrade

Hi I encountered a bug when performing the E3D extrusion mod to my UM2.

after getting everything installed and doing all the firmware changes, i noticed that now the retraction settings in the printer cap the retraction speed at 20mm/s. even though it automatically sets it to 25 mm/s. if i click and enter the function to change it in the printer, it automatically drops it to 20mm/s and prevents me from setting it any higher.

just wondering where in the firmware i can find that setting so i can change it?

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Posted · firmware bug with E3D UM2 extrusion upgrade

This is the change that E3D put in the firmware. The 20 is for the extruder (x,y,z,e). Should be in the configuration.h file

DEFAULT_MAX_FEEDRATE {300, 300, 40, 20} // (mm/sec)

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Posted · firmware bug with E3D UM2 extrusion upgrade

so i changed that value to 60 and uploaded the firmware directly from the arduino IDE and nothing changed, it is still capped at 20. I could not find any other value in the configuration.h file that could possibly change this

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Posted · firmware bug with E3D UM2 extrusion upgrade

That's the only change they made regarding this. Did you do a factory reset after the change you made?

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Posted · firmware bug with E3D UM2 extrusion upgrade

no i uploaded the firmware, the printer restarted, then i went and checked the retraction settings and they hadnt changed

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Posted · firmware bug with E3D UM2 extrusion upgrade

Some changes only take effect after factory reset. So I would try that first.

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