I have an SKR board and like the built in SD reader but I want the default action on boot to not mount the disk. How can I accomplish this and still be able to mount manually?by naps1saps - Firmware - Marlin
Building a core xy printer and would like sensorless homing on z-max and my probe for z-min. I want the bed to lower to z-max when finished printing. For some reason this is hard for me to figure out what commands exist to do this and what I need to configure in the FW. I'm soooo lost. Please helpby naps1saps - Firmware - Marlin
The IGUS bearings are way nicer than those cheap ball bearing ones. It was definitely worth $11 Seems to allow less deflection and at the same time no binding when they are out of alignment. I'm just curious how much bed deflection is normal for a dual screw? I'm getting about 3-4mm at the edge when I push down on the unsupported sides.by naps1saps - CoreXY Machines
I moved the rods closer to the screw and that produced the expected result. Picture attached. The walking/woble effect has been eliminated. I don't expect to have issues with dual z since I haven't had any with my i3 clone after 5 years. It will be a new board though.by naps1saps - CoreXY Machines
Wow, I never posted the fix!!! I replaced a scanner unit on a copier shortly after and my company said to scrap it so I ended up with two nice NEMA17 steppers that were slightly larger/more powerful. Replaced the X and extruder steppers with them and viola the issue was gone. I verified the stepper was the issue and noticed it did not turn the same number of degrees for each step. It seems likeby naps1saps - Prusa i3 and variants
I'll post a picture when I get home from work. I have the rods all the way at the corners so I'll give it a try closer to the screw but I'm sure it will make the bed deflection worse then again nothing pushes on it while printing except during head crashes. If I end up doing triple screws: Since the driver board only has a header for one motor and I have to solder on another header, I would do aby naps1saps - CoreXY Machines
Amazon had 8 IGUS bushings with free 1 day shipping for $11 which is pretty close to what they cost from Aliexpress. I ordered a pack and will give them a try and then maybe design and print a dual bushing holder if that still doesn't do the trick and use the extras. Ultimately using 3 threaded rods should provide a more stable platform so I might change over to that if this doesn't work well enby naps1saps - CoreXY Machines
I've designed my own Core XY and finally got to the part where I put together the Z axis bed supports, etc. The cube is 500mm^3 with a print bed area of up to 300x300mm I'm using two 8mm threaded rods on either side and four 8mm smooth rods on each corner with a single LM8UU It seemed smooth until I attached the bed support to the threaded rod. The bed support deflects a bit pushing on the corby naps1saps - CoreXY Machines
QuoteDust This is a serial communication issue line N119184 was not received correctly by the controller then line N119185 was sent and the controller said hey what happened to N119184 and requests N119184 gets re sent try a better usb cable or shorter, and move usb cable away from any possible sources of electrical noise... like stepper motors Reducing my baud rate back to the default 1152by naps1saps - Printing
I had a feeling. I've got the baud rate as high as it will go 2.5Mbps so I'll reduce it. That's probably what's going on. I'll update tonight if that resolved the issue. @Dust I'm not using T1/E1, only using T0/E0. When it says "Active extruder: 1" is it referring to the ID such as E1 opposed to E0? When I read it, I'm assuming it means only one extruder is active.by naps1saps - Printing
I'm not sure what I'm looking at. It appears something resets? From what I can tell it is not a temperature issue unless it's randomly looking at the other cold nozzle for some stupid reason. Please help. Here is the log: < 21:39:27.327 : N119181 G1 X74.96 Y104.988 E2009.142*111 > 21:39:27.686 : ok < 21:39:27.686 : N119182 G1 X75.583 Y105.439 E2009.189*93 > 21:39:27.765 : ok <by naps1saps - Printing
Print head is being heated to 240 and the low cutoff is 190. Variation is a few degrees so cooling isn't an issue. I've tried both heads and both have their own thermistor. I really doubt both have a broken wire but that's the only thing I can think of at the moment. Honestly why does it trigger and then not reset. Is that a Repetier issue or Marlin issue?by naps1saps - Printing
I have a Prusa i3 clone that I recently upgraded to a dual head block and aluminum print bed. Standard Arduino w/ Ramps 1.4 + the latest Marlin. I have suddenly run into an issue as I started a longer print after the upgrades where it will stop extruding randomly in the middle of the print. If I pause the print and try to extrude, it will echo a "Cold Extrusion Prevented" message even though thby naps1saps - Printing
When I took the motor off it felt fine. the bearings are lubed up and slide good. I took the Y axis apart and lubed up those bearings and adjusted everything so its straight and the y axis is much more solid and smooth now but X vibrates too much. When it hits that resonance frequency it sounds like a super loud dot matrix printer. I'll probably take a video of it or something.by naps1saps - Prusa i3 and variants
My lead screws are definatley not straight but that does not really explain the thick thin extrusion causing the pattern on the side wall :\ I will take a look at the settings you suggested. I don't know much about steppers and drivers. Is there a stepper motor I can get that has smaller steps like a 0.9? Would it work with the default drivers on the Ramps 1.4 board? Also, since you have theby naps1saps - Prusa i3 and variants
Fristly I have a Folger Tech Prusa i3 2020 I know this has been discussed before but I haven't been able to find my exact issue. According to my research it seems like vibration and/or motor steps can be the cause of this. There is a diagonal wave pattern that matches perfectly on x and y side walls. On cylindrical objects the wave wraps around the object making it look almost like threads on aby naps1saps - Prusa i3 and variants