QuoteWolfie If You Can Read It In English, Thank A Veteranby CraigMoberg - General
Quotethe_digital_dentistAnyone who finds this thread offensive to their sensibilities has the option of simply ignoring it.by CraigMoberg - General
"I" is what? (I'm not an electronics guy.) I tried values between .35 and .5 with no difference in motor behavior. I know the vref gives the motor enough power to do the job right, not too much and not too little -- but what would cause the stuttering/staccato motion? What does being unable to turn the shaft by hand indicate? Thanks.by CraigMoberg - Printing
You don't flash just the configuration.h, you flash the whole firmware. Flashing it replaces what's there with the new version, so you don't need to erase first. You have to open the Arduino IDE software and load the .ino file. That's the main file that loads everything else. (I think normally it's a .pde extension -- don't know why Folgertech has an .ino.) Set the settings in Arduino so it canby CraigMoberg - Prusa i3 and variants
Is there a reference guide, or formula, for determining the correct vref for a given shunt resistor?by CraigMoberg - Printing
I was having extruder problems, and one of my diagnostic steps was to replace the clone A4988 stepper driver that came with the kit with a genuine Polulu. The problem turned out to be something else, but the extruder behaved weirdly with the Polulu, both when printing and manually extruding. I didn't change anything else -- the vref was tuned the same (0.35) and all jumpers were installed withby CraigMoberg - Printing
Quotegianni21what about that scuff in the middle? It's not just the scuff -- those ridges on the top layer show that the nozzle is pushing through the soft plastic on every pass, even in your first picture. I had the same problem at first. As Olaf says, you have to get Z homed right. If the nozzle starts too close to the bed it will just squish plastic out the sides on the first layer and be tby CraigMoberg - Printing
There's some information here. The extruder motor connector pins at the board are reversed in the build guide. (Actually the build guide forgets to tell you to hook up the extruder motor! but the picture shows the connector in the wrong orientation.) This may be the problem.by CraigMoberg - Prusa i3 and variants
You can find their firmware on their google drive. But it doesn't come plug and play - there are errors, like the extruder motor is set to the wrong direction and the min/max and endstop settings need some playing with. I have the same I3 and I'll be upgrading the hotend to the E3Dv6 too. I've been searching for a new extruder and mount for it, so thanks for the links! I was looking at this oneby CraigMoberg - Prusa i3 and variants
QuoteGroundswellIs the log you guys are referring to the Repetier log? Yes. There are Debug Options at the bottom of the Manual Control tab (if “Easy Mode” is disabled) that let you specify what you see in the log. Turn on Info and Error, and maybe Echo.by CraigMoberg - Prusa i3 and variants
My problem was, first of all, that the motor was moving in the wrong direction. That's why it would feed in the left hole -- it was moving counterclockwise. In the right hole it was just pushing it back out. It turned out that INVERT_E0_DIR was set to true in the configuration.h from Folgertech. It should be false for direct drive. After that, I discovered that the set screw to hold the gear onby CraigMoberg - Reprappers
Try homing Y first, then it may move normally.by CraigMoberg - General
Is the hotend at extrusion temperature when you try to extrude manually? If PREVENT_DANGEROUS_EXTRUDE is set in your firmware, the extruder motor won't run if it isn't.by CraigMoberg - Reprappers
This seems to be saying there are syntax errors at or around lines 10 and 213 of thermistortables.h. "#endif without #if" etc. Your configuration.h looks ok to me syntactically.by CraigMoberg - General
Much better than my first cube too! It's leaving off the corner of the top layer, which happened on mine too. I was advised "In your slicer add M400 at the beginning of your end code and that will fix it." It did. This apparently flushes the buffer to make sure all commands get executed.by CraigMoberg - Prusa i3 and variants
QuoteLaopayou may have the dRV8825, which are 1/32 drivers Unless they've changed it in the last couple months, this has A4988 drivers. That's what mine came with.by CraigMoberg - Prusa i3 and variants
This was one of head-scratchers I found in building this kit too. The instructions kind of leave you hanging here and in a few other steps. You've prompted me to finally post my Folgertech Prusa I3 build cheat sheet, to document some of the, um, bumps in the road I encountered along the way.by CraigMoberg - Prusa i3 and variants
This is a cheat sheet I compiled from the build log I kept while following the Folger Technologies Prusa I3 build manual, listing the things I found missing or unclear and the solutions I found to them. I'm not a mechanical or electrical guy, and the instructions often assume you are, and can fill in the blanks yourself. It also contains a few comments along the way about problems I encounteredby CraigMoberg - Prusa i3 and variants
What temperature do you have the extruder set at in your slicer? It sounds like the gcode thinks the temperature should be much lower. This is generated by the slicer, and once the print starts, it overrides your manual temperature setting. "Heating extruder" really means "Getting extruder to target temperature." When the print starts, you should see a vertical line somewhere along the extruder tby CraigMoberg - General
Thanks! I found this too, which seems to map to what I have.by CraigMoberg - Mechanics
I got some NEMA 17 4.8kg/sec motors to replace my 2.6kg/sec motors. The new motors have a different wiring color scheme. (Guess I shoulda thoughta that!) Not being an electrical guy, I don't know how to connect the wires on the new motor correctly. Can someone help me sort this out? -- which color wire on the new motor maps to which color on the old one? I've attached pictures of the old motorby CraigMoberg - Mechanics
QuoteMattMosesThere are tons of case law examples in Michael Weinberg's article "What's the deal with copyright and 3D printing?". Here is the link again for convenience. Interesting stuff, and lots of citations to cases about copyright in general, and cases regarding artistic/architectural/industrial designs, and how they might be relevant to 3D printing. But still no cases where someone is tryby CraigMoberg - General
QuoteAndrewBCN In the hope that this answers your question more precisely than the previous link I posted. Note that all it took to find this was a single query in the usual search engine... Only one of these (of the US cases, since my question came only from what I know of US law) contains a ruling -- Busybox vs Best Buy -- and interestingly says "This is probably the first case of enforcementby CraigMoberg - General
QuoteAndrewBCN Hi Craig, Thanks for joining this thread. Answering your question, you can check a link I posted earlier here in this thread, to a page written by Eben Moglen: Enforcing the GNU GPL by Eben Moglen. Note the text dates back to 2001 (14 years ago). So apparently the GPL has legal validity and is enforceable in court, at least in the US and at least in some cases. OK, but he talkby CraigMoberg - General
This brings up a general question I've had about open source licenses for awhile. IANAL (though I am anal), and I haven't researched the specifics of any open source licenses. But from the little I know about copyright and patent law, it seems to me that to take action against someone in court for violating a license/copyright or patent, you have to: - Claim ownership of the work via copyrightby CraigMoberg - General
QuoteFloydDont file the nozzle! That's what i figured. But if you heat it and wipe it, more continues to ooze out as it cools down. Maybe retracting once it's heated up will help.by CraigMoberg - Printing
What I do before leveling is pull off any plastic on the nozzle with needlenose pliers, then gently run a fine file over the nozzle end until I don't feel/hear any plastic on the tip. I worry a little that I'm scraping off some brass, but haven't seen any ill effects (I don't think!) and nozzles aren't expensive.by CraigMoberg - Printing
I can't be anti-Microsoft -- I work in a Microsoft shop. Windows, Visual Studio, SQL Server, Outlook, Lync, Word, Excel, you name it. Familiarity breeds contempt, I guess. . I'm exaggerating for effect, just having fun. But MS products can be frustrating, you have to admit. They often try to make them all things to all people, and end up with bloatware.by CraigMoberg - Reprappers
Quoteelwood127you would think that a Microsoft type company would be positioning to take over. If you want a slicer that's designed by the marketing department, who assumes you're a moron... If you want a slicer that takes 5 minutes to load, as it loads add-on after add-on ... If you want a slicer that has 10 levels of mystifying menu options ... If you want a slicer that takes 20 minutes to sliby CraigMoberg - Reprappers