nb99 Wrote: > As far as contact goes, well, normal bridging is > by definition no contact at all. > Bridges have contact at both ends, which makes it possible to stretch the filament over the gap. Overhang doesn't make that possible, you have limited contact along the whole length of the filament but no solid anchor point. At some point, its going to stop working. > ps Someone reaby Andrew Smith - General
Gravity is not the problem. Repraps can print upside down with no real change in performance. The problem is the limited contact between the new filament and the existing object.by Andrew Smith - General
Try using sender.py, which comes with skeinforge. Its a tiny little program that does nothing but send gcode to the printer. If you still get issues with that, its not an issue with the host software.by Andrew Smith - General
RAMPS electronics can do this from 1.3+. Most other electronics can't, they use integrated stepper drivers and a fifth driver hardly anyone would use isn't cost effective. This will improve when multiple extruders become commonplace. Teacup firmware is listed as supporting unlimited extruders, repetier lists multiple extruder support as experimental. There may be others.I don't think any firmwaby Andrew Smith - General
I don't know if papillio can run reprap firmware, but I do know its not pin compatible with the mega. You may be able to attach a RAMPS to it somehow, but its not going to slot in place. Id say to buy the mega unless you really want to play with an FPGA.by Andrew Smith - Controllers
And this is a good example of why you post the error message in the first place. M113 is a deprecated code used to drive older, DC motor extruders. What are you using to generate gcode? Assuming its skeinforge, you need to set up your replace.csv to get rid of the M113 codes and a few others. Heres my replace.csv: M101 M103 M108 ;M108 M113 ;M113 Note that those are tabs, not spaces, skeinforgeby Andrew Smith - General
I think this is what you need:by Andrew Smith - General
That would increase warping. Warping happens as layers contract relative to each other after becoming solid, if you allow the part to cool the new layer is solidifying in contact with an already cooled and contracted layer, if you keep the part as hot as possible, the new layers are cooling onto expanded layers and relative contraction is much smaller. That was the whole reason that heated beds aby Andrew Smith - General
Teacup doesn't monitor the endstops except when homing. It may be lost steps on Y or X axis, depending on how the part was oriented on the printer. The first layer is often printed more slowly than subsequent layers, which would explain why the base turned out OK but the second layer failed. Turn up the power on that motor slightly and see if it improves. Or it could be too much power causing a sby Andrew Smith - Printing
The hole for the temp sensor isn't meant to go all the way to the melt chamber Tap it, put in a screw, drill a new one and tape the sensor in place. Superglue will not stand up to the heat for long so don't bother with it. As for skeinforge - if you turned on dimension and tweaked start.gcode and it still isn't working, post the start of the gcode it creates here and see if someone spots anythiby Andrew Smith - General
Turn on the dimension module within skeinforge. That will generate E codes which will drive the extruder, without dimension the code attempts to use obsolete gcodes to control an old style extruder.You will also want to add G28 X0 Y0 Z0 to your start.gcode to instruct the printer to home on all axes first thing. While you're at it, add G92 E0 to zero your current E position, otherwise the extruby Andrew Smith - General
It means the firmware has crashed, reset, and it telling the computer its ready to receive gcode. Is there any pattern in the last gcode before it crashes?by Andrew Smith - General
I don't think that'll take a molex connector but just in case it does - don't. You need to connect 12V to both pairs of pins on that connector. 12V is on yellow, 0V is on black. Connect multiple wires to each terminal, especially on the 11A side since that one draws more than a single wire is rated for.by Andrew Smith - RAMPS Electronics
Or you can turn on the multiply module. Its intended to create multiple copies of an object, but it can be set to create a 1*1 array of objects centred on 100,100.by Andrew Smith - General
At a guess, its looking for variables from configuration.scad and not finding them. Make sure that file exists and contains the variables listed.by Andrew Smith - General Mendel Topics
It shouldn't be a problem. The rating tells you how much power it can dissipate in normal circumstances. We are keeping the temperature under control and sinking the heat out of it into the extruder head, so we can put much more power than normal though it.by Andrew Smith - General
amaurer Wrote: ------------------------------------------------------- > Teacup wants everything in meters - those are > steps per meter, not mm. > Oh. Thats new. > I've got everything working now with Sprinter. I > guess I just don't grasp Teacup, oh well. Sprinter supposedly gives better prints, anyway, so I wouldn't worry about it.by Andrew Smith - General
Your steps per mm are way to high. For a standard mendel at 16x microstepping, you should set 80 steps per mm.by Andrew Smith - General
glrra19 Wrote: ------------------------------------------------------- > still nothing > also i dont even know what GE 100 f10 is Its called g-code. You should probably learn some of it. G1 is a move command. E100 tells it that its moving 100mm on E axis. F10 tells us its moving to 10 on the feedrate axis. The string G1 E100 F10 therefore tells to the machine to extrude 100mm of filamenby Andrew Smith - General
What happens when you connect to the electronics using the serial monitor in the arduino environment? And what makes you think the pins are set incorrectly?by Andrew Smith - General
Lulzbot specify a borosilicate bed with no mention of a Kapton or PET coating, so I guess the sheet is to protect it during shipping.by Andrew Smith - General
Be default, sprinter uses bang-bang control for the heaters. Bang bang always fluctuates. A high thermal mass heater with the thermistor positoned close to the heating element will fluctuate less than one which heats very quickly with a thermistor that reads temperature changes only after the propagate across the entire heater block. You can enable PID control which will, when properly tuned, stby Andrew Smith - General Mendel Topics
The bed should go away from you for -y moves.by Andrew Smith - General
You probably have your X axis backwards. Looking from the front of the machine, the X endstop should be on the left. If its on the right, you should move it to the left and invert the X direction in firmware. Or it could be the same problem with Y axis. The stop there should be on the front of the machine. Same fix, move the endstop and invert the axis. Theoretically, you could also fix this byby Andrew Smith - General
Its glowing red because you just generated 102 watts of heat in a small length of wire suspended in air. The print bed acts as a heat sink and keeps the wire from getting that hot - just be sure that the whole length of nichrome is in contact with the bed. Also, shouldn't the heated bed be on the D8 terminals?by Andrew Smith - General
Whats the temperature reading from a cold heater? Sprinter wont enable if if it reads below 5C. Probably a safety measure written by someone from a warmer climate. You can change that value in config.h, but if you're ambient temperature isn't really that cold you might want to calibrate your temperature sensor.by Andrew Smith - RAMPS Electronics
That should be a simple change in the firmware. According to the schematic, the E1 Enable, Dir and Step pins are D30, D34 and D36. Plug those values into the RAMPS 1.3 section of pins.h.by Andrew Smith - RAMPS Electronics
Can't be done, you need to upload a fresh firmware. With luck, whoever sold you the preconfigured board can provide the config.h they used, otherwise you're going to have to set it up from scratch.by Andrew Smith - Reprappers
Johann Wrote: ------------------------------------------------------- > I think this design may actually reduce backlash > because in normal operation both belts will > continue to move always in the same direction. To > drive the extruder and push filament into the hot > end, they will move in the opposite direction from > each other all the time. Either one of them will > mby Andrew Smith - Mechanics
The belts hold the carriage in place. It will move at the average of the two belts speed, and the extruder will turn at the difference of the two belts speed. So far as I can see, the only problem with it is that it will probably add backlash to the X axis.by Andrew Smith - Mechanics