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Hey guys, Im down from Alaska with my Prusa. The trip hit it pretty hard, knocked a few bolts loose,etc.
All I need to get going is a good hotend, hobbed bolt, and im thinking about getting a heated bed. Ive printed a couple parts but they were low quality due to issues I had with my homemade hotend/hobbed bolt.
Looking forward to getting up and running sometime this year, fixing my machine, and
by
alnmike
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Utah, Salt Lake City RepRap User Group
Changing the firmware settings continues to have little effect on extruder, still changes the other axis's though, no idea...
New symptom that might be related. If I tell pronterface to extrude 30mm at 15mm/min it will extrude for exactly 1 minute then stop, its supposed to extrude for 2 minutes. It also extrudes about 18-22mm worth of input lol. Somethings fishy there and im pretty sure its rela
by
alnmike
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Firmware - mainstream and related support
All 5 of my motors are Nema 17's. I could switch the wires for the x-axis and extruder or something, I dont feel comfortable touching wires to parts of my board.
by
alnmike
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Firmware - mainstream and related support
Hmm, wish it wasn't connecting :/ That would be easier to solve.
Connecting...
start
Printer is now online.
echo:Marlin: 1.0.0 RC1
echo:Configuration.h: 2-19-12 | Author: Mike
echo:Free Memory:4899 PlannerBufferBytes:1168
echo:Using Default settings:
echoD init fail
workDir open failed
ok T:23.16 B:0.00 @:0
Disconnected.
Do you think changing to a beta of Marlin would be the ticket?
by
alnmike
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Firmware - mainstream and related support
First, I want to thank you for your help so far and in the future heh.
Ok, here is the text in pronterface:
Connecting...
start
Printer is now online.
echo:Marlin: 1.0.0 RC1
echo:Configuration.h: 2012-02-08j | Author: username
echo:Free Memory:4899 PlannerBufferBytes:1168
echo:Using Default settings:
echoD init fail
workDir open failed
ok T:22.03 B:0.00 @:0
>>>M503
SENDING:M503
>>
by
alnmike
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Firmware - mainstream and related support
Ran through everything again.
Heres my current settings:
#define DEFAULT_AXIS_STEPS_PER_UNIT {64.7091, 64.1202, 2305.6769, 3579.3991}
With the settings I posted earlier, I did another calibration of all motors. XYZ is spot on now, within about 1%.
I got a measurement of 18.64 out of a requested 30mm, so I did 2224/18.64*30= 3579.3991. I then measured the 3579 value, and out of 30mm, I get 16
by
alnmike
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Firmware - mainstream and related support
Hah, I dont know how to initiate a M503 or any other command. My experience goes far enough to press buttons in pronterface.
Would I have to open the gcode file to input the M commands?
I changed the XY and Z values as well as the extruder values. I kept in mind it was in xyze format, but theres a real possibility I got stuff backwards.
by
alnmike
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Firmware - mainstream and related support
Hey everyone. Finally got my prusa printing, it just needs to be calibrated now.
Ive got Arduino 0022 with Marlin firmware, going to post the config below. Im using RAMPS 1.3 with opto endstops.
My problem is no matter what I change the steps_per_mm setting, every time I try to extrude 30mm, I end up getting 18-22.
DEFAULT_AXIS_STEPS_PER_UNIT {63.4149, 63.4149, 933.3333, 2224}
Ive changed
by
alnmike
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Firmware - mainstream and related support
I dont know what the M103 and M101 settings are, its not on the Wiki, the M108 value looks like the setting in skeinforge that I kept changing from 10-255, flow rate. Right about where the M101 is, the extruder goes crazy. Ive got a .5mm nozzle, and a wades extruder with a NEMA 17, if anyone could give me their settings. Its a SAE prusa, but uses the metric belts and allthread, so the settings fr
by
alnmike
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Reprappers
I took a long look at the Gcode to figure out the reversal process and to just understand whats going on. But I dont understand why the extruder motor isnt turning during print and goes into overdrive at pauses, or even why it pauses. Every youtube ive seen shows smooth transitions of motion. Before I fixed one of my extruder problems (It wasnt turning at all), I watched my printer go through a f
by
alnmike
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Reprappers
Yeah, my kapton tape that i have right on top of my nichrome wire is smoking pretty bad, I think somehow the wire isnt as tight as it could be against the metal to drain the heat away. I know its getting a bit hot to burn kapton tape... But it should be serviceable enough for me to get it up and running so I can make new versions of all the pieces that are sub-par with what I got off ebay, then I
by
alnmike
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Reprappers
Update with another video.
I ordered 3 more controllers, so I have one extra, My reprap now moves and extrudes as its supposed to, my temperature does have a big swing range though.
My new problem is in this video, when I hit print, everything goes to home, the extruder counter resets to zero (I did have the reversing problem, but fixed it), and it sits there for a number of seconds doing noth
by
alnmike
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Reprappers
Bleh, well at least its not the motors. Anything I can do to see if they might have been made faulty and switch em out with ultimachine?
by
alnmike
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Reprappers
Here is a video of my problem axis. The motor overheats because it fights itself or something, the printbed moves smoothly quietly and overheat-free. I have sanded the smooth rods some and added lithium grease. The two axis's have about the same tension on them from the motors point of view. I use my hand to turn the wheels when its off, and they feel about the same. I tried pronterface, but reps
by
alnmike
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Reprappers
Electronics, Opto endstops:
Thermistor :
The electronics says it comes loaded with the software needed to make a reprap, and since I do not yet know how to do those things myself, I just took Ultimachine for their word and hooked it up to my computer. Is the temperature table part of the computer side of software, or in the arduino?
All my axis's work great (issues with Z, but works when I
by
alnmike
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Reprappers
I'm fairly certain the wires aren't touching, Ive got kapton tape separating them, and if they were, the temp would show crazy values for a short. Anyway, the actual temperatures definitely aren't 300C, im using a free abs sample from makerbot i think, and its still not extruding. My meat thermometer (worst possible way to measure the hot end temp) says the nozzle gets to 160C when its set to 280
by
alnmike
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Reprappers
Hello all, I have finished assembling my first reprap, a Prusa. Ive got two major things to figure out before printing starts. One, is the temperature of the hot end. I set it starting at 200, going up in increments. The last one I tried was 280, somewhere around 260, my software reading jumps to around 330, my question is how do I get the most accurate results? I have no programming knowledge wh
by
alnmike
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Reprappers
I got my parts as a kit from ebay, wish I had gone with a more trusted supplier. Almost every hole and receptacle for a nut was the wrong size, and I ended up with a bunch of missing vitamins, and some extras of different sizes, I had to just mix and match by the end, which was disappointing. Not sure how you miscount a fixed number of washers, ect. But in the end it did work out, aside from me h
by
alnmike
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Reprappers
Thanks, ive been playing with solidworks, its very easy to learn for me, Ive been following some tutorials online. I also downloaded the files for prusa, and put a few of them into skeinforge and went through the entire cutpath. Now im just figuring out the best way to source all the parts.
I know this isnt the place for this question, but I figure I help the clutter by not posting more threads.
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alnmike
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3D Design tools
OK, thank you very much, I thought the reprap host was the last step. I think my school uses Skeinforge, so ill use that and do further research on the STL modeling. My machine controller is the first thing that ill end up making. Glad its not a crazy 12 step process.
One more question, is there an easy program that does finite element analysis as part of the CAD program? My school has Ansys, bu
by
alnmike
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3D Design tools
Hello everyone, this is my first post about 3D designing.
I have been looking through the information on the wiki and these forums for the past couple of days. Coming from a Mechanical engineering student with minimal knowledge of AutoCAD, and very basic programming skills (java, matlab), what exactly is the progression of events that lead to a final product?
If it makes it easier, can start ba
by
alnmike
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3D Design tools