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foehnsturm

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About foehnsturm

  • Birthday 09/15/1964

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  • Country
    DE
  • 3D printer
    Ultimaker 2 Mark2
    Ultimaker 3
    Ultimaker Original
    self-built corexy

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  1. I check if I can do a test on the UM3 with 0.6
  2. To my experience with different nozzle sizes, it's - unfortunately - almost impossible to compare different sizes. It's not just the reduced resolution with bigger nozzles, but the entire extrusion system loses some controllability, especially with 0.8 and above.
  3. could you share a link to your test part file (stl, step)?
  4. foehnsturm

    Another take on ringing

    Could a few people share short (ideally < 1hr) real life prints where they experienced serious ringing issues with the UM3 and the settings they used? Or the other way round, prints that suffered from the massive reduction of accelleration and jerk (rounded corners etc.) I'm testing a UM3 mod and the usual ringing tests show some improvement. But real life prints might be a whole different story.
  5. As for the material question.Its operation temperature should provide a reasonable safety margin to the bed temperature you are typically using. E.g. if you print ABS with the bed at 100°C you should look for something with a really high softening point. Other requirements are not that demanding, but as the magnets are glued, the material should work well with serious glue.
  6. @3dprinting_guy, for an UM2GO with the old black feeder you would have to design an adapter. Not sure about the firmware (@tinkergnome ?).
  7. Hi guys, holdays are over here now. Any experiences with the sensor to share so far? @cjs, @conny_g, @fbrc8-erin, @Dim3nsioneer, @jffry7
  8. Super nice.👍 I already knew, you're well very organized person. 😉
  9. A hall effect encoder instead of the AMT is doable but would require to attach a magnetic target to the shaft and some kind of mount and housing for the PCB. The encoder you are linking to seems to be discontinued, I'm not sure if there is a newer alternative which provides the same interface.
  10. foehnsturm

    Mark2 Firmware

    Thank you. I made some corrections. There's no separate "mark2 for Ultimaker2 Extended" definition. I think the only important thing the Extended defintion files are overriding is the machine_height setting.
  11. foehnsturm

    Mark2 Firmware

    It should be there somewhere but I had no luck with a quick search. So: Tinker-Mark2-dual -> Standard UM2(+) Mark2 but without the tiny Mark2 PCB Tinker-Mark2-expansion-board -> UM2(+) Mark2 with the Mark2 PCB --- extended --- > same for UM2(+) Extended printers I assume you don't have the PCB as you had to extend cables.
  12. Here are some basic operating instructions Unscrew the lower screw that holds the feeder cover, mount the adapter (use a longer screw in case). Push the flow sensor into the mount and rotate 90°. It's a very good idea to use a filament guide together with the sensor. There are a lot of designs available which are mounted to the screw some 7 cm below the feeder which secures the XY stepper cover. It's vital that the flow sensor wheel moves with almost no resistance when there's no filament present. Connect the cable as shown here. Implemented Gcode M591 T - extruder number T0 or T1 (default=active extruder) S - S0 = disable filament monitoring, S1 = enable filament monitoring E - extrusion length for each comparison (default 0.20mm) A - smoothing factor for exponential floating average (0.05) L - filament movement per pulse in mm (1 / steps, default 66) R - min/max percentage (print will be paused if the average is outside of these values) P - set value for the average percentage All parameters are optional. E and R are global (the same for both extruders) Complete example: M591 T0 S1 E0.2000 A0.05 L0.015 R40:130 P100.00 Basic settings You can set the "L" value via the screen menu as well: Advanced / settings / filament sensor. Use "move filament", there it displays the number of encoder steps and the calculated percentage as well. Move like 10 mm and use the number of pulses to calculate the movement per pulse (most likely in the range of 0.015 to 0.017). The default E and A settings: E is quite short (0.2mm) and A low (0.05). That means the average is calculated every 0.2mm but in the way that the new measured value only influences the result by 5%. For calibration I use high E like 2.0 and A1.0. Then, encoder pulses and percentage match immediately. Fo regular printing I found values like E0.5 and A0.3 to work well. Tinkerware firmware for standard, single extrusion UM2+ Tinker-MarlinUltimaker2plus-18_07.zip Tinkerware firmware for dual extrusion UM2+ Mark2 Tinker-Mark2-18.03.4.zip The original 18.03.4 works well but after a pause and resume due to a flow sensor alert it doesn't reset the calculated flow average. This is usually hidden by the retract and prime move which helps to increase the average again. But sometimes it stays low enough to immediately trigger the next alarm. Here's the link to a slightly modified firmware. Tinker-Mark2-expansion-board-18.03.4fs.hex
  13. @tinkergnome mentioned there's already a driver for the Allegro A1335 chip, which UM uses for the encoder. So we would have to make a copy and adapt it to the registers of the chip our adapter provides, right?
  14. @jffry7 Maybe this one already solves the hardware problem https://www.tindie.com/products/Saimon/i2c-encoder-connect-rotary-encoders-on-i2c-bus/ EDIT: Ofc just using the PCB together with our high resolution encoder
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