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    Ultimaker 2+
  1. Any chance you'd be willing to share these JSON files? I'm interested in doing a similar adjustment.
  2. For anyone who might be interested, I made a mark2 mount for the side of the ultimaker when you want to print with just one head https://www.thingiverse.com/thing:3676194
  3. Ah found the answer. In the Dual Extrusion menu, if you select extruder 1, z offset is for nozzle 1. If you select extruder 2, z offset is for nozzle 2.
  4. In the TInker firmware, I remember a menu setting that let me tweak the z-offset after buildplate adjustment to fine tune it. For the Mark2 variant, I've seen the z-offset adjustment for the second nozzle, but I can't find it for the first nozzle. Was this setting dropped in the mark 2 variant? Anyone know where that setting is controlled in the source code? I've been compiling my own firmware anyway, so I'm fine to just flip a bit somewhere, but I'm not sure what that setting is called.
  5. I ended up using PlatformIO inside VSCode to build the mark2 firmware. I had to update the platformio.ini settings to match the make parameters from the DualExpansionBoard build rule, since thats what I have: src_build_flags = -DTEMP_SENSOR_1=20 -DEXTRUDERS=2 -DTEMP_SENSOR_BED=20 -DFILAMENT_SENSOR_PIN=30 -DBABYSTEPPING -DUM2PLUS -DTCSDSCRIPT -DFAN2_PIN=6 -DHOTEND_FAN2_PIN=14 -DZ_MAX_POS=325 -DDEFAULT_POWER_BUDGET=160 -DHEATER_0_MAXTEMP=315 -DHEATER_1_MAXTEMP=315 -DSTRING_CONFIG_H_AUTHOR=\"TinkerMark2_19.03\" -DHEATER_2_MAXTEMP=315 -DEEPROM_VERSION=\"V12\" Now, I've finally got mark2 19.03 installed on my UM2+, but I'm fighting with "X or Y switch disabled" error that others have seen on tinker firmware. I resinstalled the stock firmware and then did a factory reset, then I reinstalled my mark2 firmware. Advanced > preferences > print area shows that x and y min and max are all zeroes. Updated to x: 0 - 230 y: 0 - 224.5 z 230 based on the defines in Configuration.h . Now I'm finally able to go through the calibration step of Mark2 build. Wooo! Mostly just documenting this for anyone else who goes down this path. Also attached is my Mark2 DualExpansion board firmware, but no guarantees that it works for anyone else! CustomMark2DualExpansionBoard1903.hex.zip
  6. Sure. My thought is that there's something specifically wrong with the mark2 hex files, since I can upload other hex files fine (including the Tinker firmware). I figured if I could rebuild the mark2 hex it might work. I tried uploading the mark2 hex with avrdude and it uploaded fine, but then had verification errors (which led to my UM2 screen being black :!) I was able to upload the stock firmware to get it back to a working state. Now I'm looking at the makefile to try to figure out what might be wrong.
  7. Ah I didn't see the Mark2 branch, thanks for the pointer. I built that firmware in Ardunio and uploaded it, but it doesn't seem to have any dual nozzle support? I found a note somewhere that I'd need to run /.package.sh to build it myself, so I'm attempting that on linux. That script is throwing an error that looks like one others have seen on this forum: RM _Mark2Dual/* RMDIR _Mark2Dual/ make: *** No rule to make target '_Mark2Dual/wiring.o', needed by '_Mark2Dual/Marlin.elf'. Stop. cp: cannot stat '_Mark2Dual/Marlin.hex': No such file or directory RM _Mark2DualFan/* RMDIR _Mark2DualFan/ make: *** No rule to make target '_Mark2DualFan/wiring.o', needed by '_Mark2DualFan/Marlin.elf'. Stop. cp: cannot stat '_Mark2DualFan/Marlin.hex': No such file or directory RM _Mark2DualExpansionBoard/* RMDIR _Mark2DualExpansionBoard/ make: *** No rule to make target '_Mark2DualExpansionBoard/wiring.o', needed by '_Mark2DualExpansionBoard/Marlin.elf'. Stop. cp: cannot stat '_Mark2DualExpansionBoard/Marlin.hex': No such file or directory RM _Mark2DualExtended/* RMDIR _Mark2DualExtended/ make: *** No rule to make target '_Mark2DualExtended/wiring.o', needed by '_Mark2DualExtended/Marlin.elf'. Stop. cp: cannot stat '_Mark2DualExtended/Marlin.hex': No such file or directory RM _Mark2DualExtExpansionBoard/* RMDIR _Mark2DualExtExpansionBoard/ make: *** No rule to make target '_Mark2DualExtExpansionBoard/wiring.o', needed by '_Mark2DualExtExpansionBoard/Marlin.elf'. Stop. Initially I was using Arduino 1.8.5 but also tried pointing at 1.6.5 since that's what previous posts mentioned.
  8. Well, almost 4 months later, I finally got the expansion board and the rest of the wires I needed to upgrade to a mark2 um2+ and I'm unable to install any of the mark2 firmware .hex files 😞 From Cura, I can successfully upload the stock firmware, and upload tinker marlin firmware, but it times out trying to install the Mark2 firmware. I've tried every variant of the Mark2 firmware that exists and none of those work for me. Any ideas on what to try? Is there a way to compile my own .hex from a Mark2 firmware source? (Doesn't seem to be that source on github)
  9. The happiest 3 words I've seen all week I burned a new bootloader to the UM2+. I used an Arduino Leonardo that I had lying around and gammon's bootloader for the atmega2560. After a tense moment when the screen on the Um2+ went black, I tried uploading the marlin firmware from source in Arduino IDE and it worked. After that, I can now use Cura again to successfully update the firmware. Thanks so much for your help!
  10. If I wanted to fix the bootloader how would I do that? Do I have to use an ISP device? Where can I get the right bootloader?
  11. Yeah, I figured you wanted the crash but I can't seem to reproduce that. When cura turns on with my printer attached, the printer clicks and flashes the leds twice. Is that what you mean by reset? From Cura, I can control my printer in the Monitor tab normally. When I try to update the firmware and it fails, I can no longer access my printer in cura (it says not connected) until I close cura and reboot. Today, I went through and uninstalled every Cura and Arduino, to the point that windows no longer recognized the printer as Atmega2560 in device manager. Then I reinstalled Cura 3.6 with the arduino drivers. Updated the driver in device manager. Still no luck in uploading firmware.
  12. Thanks! (also big thanks for not embedding a virus or malware 😉 ) I've now tried Cura 15.04, 2.3, 2.5, 3.2, 3.4, 3.6, and 4.0beta. None of them can successfully update the firmware, and I've tried the firmware that came with 2.5, 3.6, Mark2Dual, and Tinker and still no dice. From 15.04 the UM2 lights continually flashed on and off, and I thought something was happening, but it didn't actually do anything for the firmware. At this point, I think it's something wrong with the programmer on the Atmega chip. I suspect I could upload a new bootloader or something similar through the arduino IDE but I'm hesitant to muck with any of that, since currently my printer works. I was really excited to upgrade to Mark2 and I've got everything except the firmware 😞
  13. Thanks for the pointer. I tried cura 15.04 and that didn't work. It doesn't look like the links for cura 2.5, 2.6 work anymore 😞
  14. Can a mismatch between nozzle size in cura and on the machine lead to under (or over) extrusion?
  15. Recently I noticed in cura 3.6 the ability to mark an object as support. There's also a setting in preferences to disable "drop object to bed". You may be able to use just that setting to move the second object high enough, and generate support everywhere as normal. Alternatively, you could create a third object that's just the support shape you need and then mark that object as support to stack the objects. I think that's a way to do it, but maybe the more important question is what are you trying to achieve?
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