I did actually get it fixed, turns out the file was not making it a bridge layer. I have my feedrate multiplier at 1.25 and it works well with other files. Never got it working with the calibration object designed for bridge, but works with other filesby jeffwilson - General
Haha! Mine does that too! I've been getting everything warmed up, purging some filament, then closing and re-loading pronterface quickly just before starting each print. Somewhere in my geode it's set to 'home' E to the position to whatever location the program starts up in. If I print or manually extrude, any movement pre-software reboot is reversed ejecting my filament. I've used the workarouby jeffwilson - General
I am away from my PC for the holiday, when I get back I will comb this thread again and see if I can find any places that remind me of where you are at now. In my pronterface i think I can set my flow well below 50. If you look back in the thread about where I found the PLA profile to zipped it to upload, it should have lots more files than just that one. Try a search from your start menu (if usiby jeffwilson - General
Thanks so far for the information, I have a few things to try now. I will hopefully be able to post that I have fixed the problem by the end of the holiday weekend. It's been a week that has not left much time for tinkering, so I have not yet been able to get much progress... Soon I will be back at itby jeffwilson - General
I compared three of the above calibration objects. One was made with 1.0 feedrate multiplier and the other was made with 2.0 feedrate multiplier. As an exaggeration I made one with 5.0 feedrate and 2.0 flowrate multipliers. I saw no difference of any of the lines I compared in any of the three gcode files. I have successfully made changes to other parameters and had them take effect. Is therby jeffwilson - General
I'm working through the page and have gotten steadily improving results in the first several steps. I am now working on bridging, and the calibration instructions do not seem to work for me. I am using Pronterface with SF41 and Marlin FW, printing PLA. I started with bridge feed rate multiplier at 1.0 and bridge flow rate multiplier at 1.0, and am printing the 20mm hollow calibration cube froby jeffwilson - General
I switched to pronterface and marlin firmware which resolved my problems. My appopogies for forgetting to explain my resolve in the thread for so long.by jeffwilson - RepSnapper
I have been able to successfully print several objects now with z scaling at 1.25 and the layer height seems to be good for the plastic adhesion to the layer below. The objects were skewed in z axis, 25% too tall. I turned scaling off and increased layer height by 25% to .4375 and now it seems to work pretty good. I'd like to tweak this to be smaller, but it runs and so far I am satisfied with tby jeffwilson - General
Chop does not show up in my settings page as an option, so I'm not sure what it does either. I changed layer height from .4 to .35mm and width over thickness from 1.8 to 1.6 as in Sublime's post, and it showed a lot of improvement, the feed rate is noticably more on target with what I know it should be. It lays down a steady bead that when purged into air, and the diameter is .47mm on average.by jeffwilson - General
I found the folder in the path: Computer/C/Users/Jeff/.skeinforge/profiles/extrusion/PLAby jeffwilson - General
So I confirmed that my feedrate and flowrate are the same, both are 16. I changed my packing density from .85 to 1.0 because I am using PLA for calibration and printing. I confirmed and fine tuned my steps per unit in marlin to have 10mm of filament feed into the extruder assembly when asking for 10mm to feed in. When I select 60mm per minute feed rate it takes 10 seconds, when I select 30mm/mby jeffwilson - General
Where would I check to see if my filament is 1.75 or 3. I'm using 3mm filament so your suggestion could be the solution to my problem. Under craft->dimension: my settings are activated dimension checkbox absolute extrusion distance extruder retraction speed 13.3 filament diameter 2.8 filament packing density .85 minimum travel for retraction 1.0 unchecked retract within island checkbox reby jeffwilson - General
Yeah. Into the extruder is what I'm calibrating. I have a pair of calipers and I have been measuring flush to the hole the filament enters (before the hot end, top of wades extruder) up 10mm along the filament and marking it with a ultra-fine sharpie. I click extrude and measure my line to flush with the hole again to get the difference of my original 10mm. The first time it only really moveby jeffwilson - General
My changes aren't exactly random. I found that a value of 496 in firmware for E extrudes very close to 10mm of filament when I click extrude expecting to get 10mm of filament. My x,y,x axis are pretty close as well when I click the xyz100+ buttons. For manual commands in the GUI it works pretty good, which is what the forum posts and wiki say to calibrate with. What I'm not understanding is wby jeffwilson - General
Changing to Marlin seemed to have fixed some of my issues. I did 4 test prints of a 40mm test cube from thingiverse. The first one came out half size at 20mm and overflowing with too much plastic so I stopped it 2 layers after the raft was done. In my Marlin firmware I changed x and y from 40 to 80, and left E at default of 76.2. This made the second print near exactly 40mm on each side. It hby jeffwilson - General
My speed settings are: checked - activate speed checked - add flow rate bridge feed and flow rates (ratio) 1.0 and 1.0 duty cycle at beginning 1.0 duty cycle at end 0.0 feed rate mm/s 16 flow rate setting 210 orbital feed rate .5 maximum z feed rate 1 perimeter feed and flow rates .75 and .75 travel feed rate 16by jeffwilson - General
I did, and I loaded a new STL after the changes were made. I verified the .gcode file I was using had reasonable values for E. Here is the first 50 or so lines of my gcode file i'm using. G90 G21 M105 M106 M140 S60.0 M141 S30.0 M142 S0.0 M113 S1.0 M104 S200.0 G1 X28.8 Y48.888 Z0.72 F60.0 G1 F798.0 G1 E0.0 G1 F60.0 M101 M108 S210.0 G1 X28.8 Y63.432 Z0.72 F240.0 E42.0156 G1 X31.68 Y63.432 Z0.72by jeffwilson - General
Yeah, I saved the settings and verified by closing and re-opening the program. Dimention is checked, but I did not adjust any settings in that window other than activating it. I got marlin uploaded and am finding that pronterface "extrude" button is not working right. I set the extrude length to 5mm and the speed default was 200mm/min. This locked the motor, and I randomly entered in several nuby jeffwilson - General
I followed this post about turning on demention in skienforge, but I did not get the same resolution after I had turned the setting on. I clicked craft->dimention-> checkbox for activate dimention. Re-loaded an STL file with a new file name and tried to print again. No extruder movement during the print, but the pronterface GUI 'extrude' button has control over the motor when not prinby jeffwilson - General
Downloaded Marlin and made the same updates as I did in Sprinter for configuration.h and pins.h. When I compile I get these errors: Marlin.cpp:2280:1: error: pasting "DIO" and "-" does not give a valid preprocessing token Marlin.cpp:2280:1: error: invalid suffix "_RPORT" on integer constant Marlin.cpp:2280:1: error: pasting "DIO" and "-" does not give a valid preprocessing token Marlin.cpp:2280by jeffwilson - General
I hooked up my RAMPS again. I created a new folder and unzipped Printrun, Sprinter, and Skeinforge 41 from my download directory. I put a copy of my skeinforge folder in the pronterface folder. In Sprinter I chose option 33 for motherboard, and uncommented #define RAMPS_V_1_3 in pins.h and re-downloaded the fresh firmware. I connect with pronterface and I can home all axis. With default settiby jeffwilson - General
As a start, my steppers are 1.8 deg, all 3 jumpers are installed under my extruder driver, and the pot on the controller is reasonably set. I have tried two different approaches, each with it's own showstoppers. Using pronterface I calibrated Axis_steps_per_unit in Sprinter to be about 525 from original of 700. This worked in the GUI menu, the 'extrude' button was +/- .5mm over a 10mm feed, clby jeffwilson - General
I'm trying to calibrate using pronterface and sprinter on ramps 1.4. I have been changing axis_steps_per_unit for E. The original value was 700, which just made the extruder motor make a high pitched whine. I have been lowering the steps per unit and at 50 it started to spin, but too fast. I have slowed it down now to 9 and have started to test print with some success. Now i am making very sby jeffwilson - General
I just retired my old techzone electronics and upgraded to Ramps 1.3 with RepSnapper. I am trying to do calibration and test prints, but I keep running into the same problem again and again, the machine glitches and stops after a few minutes of printing. It will do the first layer and then somewhere in the second layer it hangs up and freezes, but not in the same place each time. I have repeatby jeffwilson - RepSnapper
My extruder motor is running very fast at 3000 speed in RepSnapper, about 1 rev/sec of the large gear. I went through the configuration.h in my Sprinter firmware, ramps 1.4. Nothing stands out as being set wrong, but I think I missed something in the firmware somewhere.by jeffwilson - RAMPS Electronics
I found this morning that when I touched the wires on the Z axis, the E0 would spin real fast at 1400 speed setting as you suggested. Without touching it, the E0 did not move. I found the pololu drivers were sitting so close together on the x,y,z runner on the shield, that some of the solder connections that I made on each pololu were contacting the adjacent pololu solder joints. I re-flowed tby jeffwilson - RAMPS Electronics
I have completed building a new RAMPS 1.4 board kit that I recently ordered. It was the Ultimachine pre-surface mount soldered kit. I did all of the through hole soldering and everything works except the extruder motor on E0. Every time I try to run the extruder motor, it does not move and it emits a high frequency noise. I have working X, Y, and Z axis with mechanical home switches working,by jeffwilson - RAMPS Electronics
Thanks for all the help. I ordered a pololu driver, a new hot end kit. When they arrive, I will make the software changes to the second board. I was thinking that the first board would probably work still if I removed the burned up h-bridge... but i'll try that if the second board software fix doesn't fly. Thanks again.by jeffwilson - General Mendel Topics
A month ago I fried the motor driver on my first techzone extruder V2.2 board because I missed a step in the instructions to adjust the pot down, it came cranked all the way up. I plugged it in with the motor hooked up and the chip blew immediately. After it fried, as soon as 12V is connected the motor driver glows and smokes... I couldn't even use it to continue testing anything, so i bought aby jeffwilson - General Mendel Topics
After reading a hack about using the extruder controller for heat and temp feedback, but using a 4th techzone stepper controller to run the motor, I decided to give that a try. I ordered a new controller, and a extra stepper motor controller. I'm going to test the boards (everything except the extruder motor driver) when they arrive, then hook up the motor to the extra driver. Good news is thaby jeffwilson - Controllers