I have a zonestar z5fm2 running marlin 1.1.8 with a mixing extruder. That is, 2 extruder stepper motors feeding a 2-in 1-out hotend (similar to the E3D cyclops). I'm slicing with simplify3d and I have set up: T0 set to the first extruder; T1 set to the second extruder; T2 set to a virtual extruder consisting of a 50/50 mix of extruder 1 and 2 (made by having this in the start code: M163 S0 P50by LMF5000 - Firmware - Marlin
Woohoo! Fixed it! Here's how: I wrote a small gcode file that disabled cold extrusion protection, set mix ratio to 50% and then drove the extruders forwards and backwards, with a second delay between each motion. Then I disassembled the mainbiard cover, pulled up your schematic, and probed the respective E0 and E1 DIR pins while running my gcode. Both E0 and E1 dir pins on the microcontrollerby LMF5000 - General
I guess I could replace it with a heat gun and tweezers. Thanks for the idea, it didn't cross my mind . I'm hoping it's an open or short though - might try heating things up with a heat gun to see if it fixes it.by LMF5000 - General
Thanks, that'll be very useful! I haven't had time to disassemble it yet but I'm reasonably sure it's a quad package. Hope it's a QFP not a QFN, so I can probe the DIR pin (#15 - PD6) and see if it's switching voltage level with DIR requests. Maybe that'll shed some light on whether it's a firmware or hardware issue - though when a TMC2208 failed on my Kossel's trigorilla it was pulling the DIR pby LMF5000 - General
Mine seems to run the ZMIB board rather than the ZRIB you posted. Zonestar includes all the schematics and wiring diagrams on their site as a google drive link (I'm surprised - didn't expect a Chinese company to have things so organised and freely available). My printer's board is described in this folder:by LMF5000 - General
That's exactly what I was thinking. I was going to try probing voltage levels on the DIR pin to isolate whether it's a firmware or hardware problem. Any other ideas on how to isolate and maybe fix the problem?by LMF5000 - General
Picked up a used zonestar z5fm2 from a local group. It's equipped with two extruder motors and a 2-in-1-out (mixing) hotend. I've done some testing and everything seems to work well, but the second extruder motor only turns in the forward direction. That is, if I instruct it to extrude 1mm it turns 1mm clockwise, if I instruct it to retract 1mm it turns 1mm clockwise as well. This is the case whby LMF5000 - General
I did, and got my first nozzle blockage in almost a year of operating two 3D-printers. I don't think it's related though?by LMF5000 - General
When printing there's always a compromise. High speed means it completes faster, but ringing, ghosting and other blemishes become more evident. By default most slicers seem to print inner perimeters at the speed you set (eg 60mm/s) and outer perimeters at around 50% of the speed (eg. 30 mm/s). What's the disadvantage of having a bigger speed difference - like printing infill and inner perimeterby LMF5000 - General
I can't help you with your specific question (I use S3D mainly), but isn't there an option for gantry height where you set the size of the "keep-out zone/collision zone" for your print head, and then let cura automatically set print order to avoid crashes? Moreover, I've come to the conclusion that it's generally better to print things one at a time (assuming you'll be near the printer to harvesby LMF5000 - General
I just got a big bag of 50g filament samples from a handful of suppliers. Can you recommend some prints that would be good to test them with? I already intend to use the calibration cube and the benchy, but I want recommendations for some things to test the filaments in vase mode, and perhaps a few organic models (like the owl or "the bearded yell" on thingiverse).by LMF5000 - General
I've been putting the spreadsheet outputs into the DELTA_RADIUS_TRIM_TOWER variable. Today I thought that perhaps I was putting it in the wrong place (hence the poor convergence), so I tried putting them into DELTA_DIAGONAL_ROD_TRIM_TOWER instead. Initially I thought it helped, but after 3 iterations I'm not so sure. Here's the latest status: Hexagon of 75mm printed as X=74.800, Y=75.050, Z=75.2by LMF5000 - Delta Machines
I've checked the Marlin documentation. Their auto-calibration routine (G33) does the following: -Probe a circular grid of points, -Calibrate Delta Height, -Calibrate endstops, -Calibrate Delta Radius, and -Calibrate Tower Angles. Diagonal length (i.e. length of delta rods) isn't tuned by the calibration, it's input by me to the config file (or tweaked using the LCD controls or sending M665 Lxxx)by LMF5000 - Delta Machines
Can you suggest a suitable control board that will run the firmware you recommend? Max budget would be around $50 because I already spent quite a bit upgrading the drivers to TMC2208s.by LMF5000 - Delta Machines
I think I may have been a bit unclear with my long description. Marlin's delta auto calibration finds tower angle offsets and delta radius (and some other corrections). However the delta diagonal rod length is something I enter in the config.h file and it stays fixed - it's not affected by calibration. What I'm doing is printing the hexagon and measuring its sides. Then I plug those measurementsby LMF5000 - Delta Machines
I wouldn't risk it. If printed upright as shown in the pic you'll be stressing the part perpendicular to the layer lines (i.e. the rope tension tries to pull layers apart). That's the weakest orientation for 3D printed parts. That said, dimensionally it should be about on the limit of what's possible with a 0.2mm or 0.25mm nozzle. Material-wise, PLA would be too brittle and suffers from creep.by LMF5000 - Look what I made!
Greetings! I've been lurking around the RepRap forums since buying my first printer almost a year ago, but this is my first ever post here . I have an Anycubic Kossel Linear Plus to which I've flashed Marlin 1.1.9. I've ironed out most of the bugs over the months, but I'm having some trouble getting the XY dimensions to be perfect. I've done 3 calibration iterations as follows: - printing the 7by LMF5000 - Delta Machines