Prusa how to turn off filament sensor. Prusa CORE One .

Prusa how to turn off filament sensor. Whenever the sensor is disabled, a warning message with the following text is shown " Filament sensors are disabled. So the filament sensor can coincidentally break when doing some action. 5, the IR filament sensor needs to be calibrated before first use, in order to work properly. How do I enable filament runout sensor? I’m using a pre-configured Artillery Sidewinder X1 running klipper on octopi and it has a filament runout sensor which doesn’t actually stop anything when the filament runs out. If there's residue in The message on your LCD saying Please open idler and remove filament manually shows up when the extruder motor does not succeed to remove the filament from the hotend/extruder. You can also try turning off just the autoload but leaving the sensor on (it should be the next menu entry below the filament sensor setting) but if the sensor isn't working then that probably won't be any different. Currently you cannot do that and if the sensor repeatedly fails to recognize the filament (like when using TPU), then the print is just doomed. 9/S, XL) The Nextruder filament sensor equipped on the Prusa CORE One, Original Prusa MK4/S, Original Prusa MK3. How to activate the second sensor? Jun 19, 2023 · Filament stuck in filament sensor I recently purchased a second-hand Mini+ and after I purged the previous filament I was unable to re-load the printer with new filament as I couldn't seem to push it through the sensor up into the plastic tube even with considerable force - Filament sensor for Prusa Pro HT90 Large product range Fast delivery Purchase on account For trade customers only Buy from Würth!. Please do not panic, this can be solved very quickly and you do not need to abort the print. Remove the filament after the calibration finishes. Felt almost like cancer removal. Sep 10, 2023 · The Prusa filament sensor lever can be quite fickle. Constantly causes me to waste filament on large failed prints. Calibration does not work. The calibration of the IR sensor is based on the position of the chimney (IR se… How do I enable filament runout sensor? I’m using a pre-configured Artillery Sidewinder X1 running klipper on octopi and it has a filament runout sensor which doesn’t actually stop anything when the filament runs out. 0. to turn off the Side Filament Sensor go to Settings→ Filament sensors → Side Filament Sensor [1-5] depending on where you load the flex material. MK4/S, MK3. com Jul 9, 2024 · This part will allow you to bypass the side filament sensor and ease the loading of soft filaments into the tool head. sensor > Fil. This kit replaces not only the stock hotend but also parts of the stock extruder assembly. sensor ON/OFF. Gears Calibration 8. When I load to nozzle, the Filament Sensor does not trigger no matter how much I tighten the extruder tension screw. Remove the guide tube from the top of the extruder 5. Now it’s time to test some prints. Background story After a few days of happy printing, I've tried to replace default 0. Recently, updated firmware to 3. 9/S, and each tool of Original Prusa XL detects the presence of a filament… May 1, 2023 · Hey folks, if this is what I thought it was, you don’t need a new extruder, nor a new filament sensor, since the problem is a design flaw! It turned out that there’s a little lever the filament pushes off to the side as it enters the extruder head, and that lever acts as a switch to detect whether there is filament in the extruder or not. The Nextruder filament sensor equipped on the Prusa CORE One, Original Prusa MK4/S, Original Prusa MK3. 5S extruder. Now I can print With filament sensor detection, the printer will be able to recognize if the connection with the sensor was interrupted (e. Disable the sensor and optionally acquire a replacement, this might the moment to update to a MK3S+ if you are actually running a MK3 (the filament sensor changed between them). - so that the user is not stuck on this screen without recourse. Lowering the temperature to reduce the filament tip string might help. This sensor assembly uses an IR sensor which is triggered by a mechanical lever. Feb 14, 2024 · This shouldn't happen if the sensor was calibrated correctly and there are no filament strings in the filament sensor channel. Prepare the filament and select Continue. Nov 7, 2019 · Mk3S IR Filament Sensor New printer, running Wizard and get Filament Sensor Error, check wiring. Sometimes it can throw an out of filament error when there is still plenty of filament in the reel. 9/S, and each tool of Original Prusa XL detects the presence of a filament… Aug 9, 2018 · Autoload filament not working Hello, I just finished a mk3 kit and everything is working well except the autoload filament command. For example: ⬢ Dock Calibration ⬢ Loadcell calibration ⬢ Filament sensor calibration Jun 13, 2025 · 9 Wizard - Filament Sensor Calibration During the filament sensor calibration, you will need to use a short piece of filament. G-code - n/a Mar 30, 2025 · Filament calibration High, first steps with new Core one. Set FILAMENT_INVERTING in the firmware configuration. 5/S, and MINI/+ can detect filament runout. Jan 29, 2024 · Checked the cable continuity all the way to the pins that plug into the main board, that was fine. May 15, 2018 · Re: Possible to turn off filament sensor in gcode? Awesome, thanks for the pointer! I notice there's also gcode for turning the sensor back on, with a "delay in centimeters" between sensor and extruder. Here's a photo of the adapter-printer on them: As you can see, the holes for the filament are very abraded. See full list on help. When your filament runs out during a print the filament will still me in the extruder gears, so you can extract it when you hit "remove filament" Jul 14, 2023 · RE: Filament Sensor Calibration failing New unit, so I'd get on the chat with Prusa Support, to establish a warrant claim if it's a hardware issue The Prusa CORE One, and the Original Prusa XL, MK4/S, MK3. Oct 5, 2019 · Check to make sure you have the sensor in the correct row of pins on the board. So I tried turning off the sensor from the Settings menu, but it makes no difference. After all, if you want to do your own thing, you can turn off the filament autoload under the menu "Settings / F. Some parts of the wizard must be done multiple times, this depends on the number of tool-heads. In case of a detected blockage close to the filament sensor, the printer shows the message " Fil. I have no MMU, and it was not removing or inserting filament, it occurs in the middle of a print. Aug 3, 2025 · "Filament stuck" has nothing to do with the filament inserted sensor. Now, I see it says "INS", and when I remove it, it says "NINS". Wizard checks About half of them were giving me false positives on the filament runout sensor. It's not convenient (and I doubt it's normal) to have to remove a piece of filament before Sep 30, 2023 · Notes The reason for turning off the filament sensor mid-print is that Sunlu Copper Silk filament seems to randomly trigger the sensor. For example: ⬢ Dock Calibration ⬢ Loadcell calibration ⬢ Filament sensor calibration Stuck filament can be very frustrating. 9/S are equipped with a loadcell. Pickup the tool that will be printing the TPU 2. 13. 0, the printer can detect whether the filament is stuck and not moving, for example when the nozzle is c… M406 is for the filament width sensor (whatever that is for), you need to use "M412 S0" in order to disable the filament runout sensor. Filament ran out. Loadcell test 5. What I'm curious about it: 1) Does turning off the sensor in the software (LCD panel option) turn off monitoring of the external sensors only, or does it also disable the sensor in the toolhead? 2) If turning that option off only disables the external sensor, will the print still pause The optical filament sensor detects the presence of a filament and also its movement. This caused the ball that's tensioned against the filament to occasionally partially enter the filament channel, which would trip the filament runout sensor. Filament sensor calibration Settings Filament Sensor Stuck filament detection MMU unit Cutter (Only Available when MMU is installed) Stealth Mode Fan check Verify GCode Input shaper Calibration X-axis filter X-axis frequency Y-axis filter Y-axis frequency Restore defaults Aug 6, 2023 · Printing TPU/TPE on Prusa XL Hi, has anyone printed with flexible filament on the XL? There seems to be a lot of resistance on the filament from the PTFE tube. The printer will then ask you to press the knob and unload the filament. Make sure you are running the latest firmware since new versions offer a higher-frequency sensing algorithm and improved reliability. But, it never tells you this has happened. For the MK3S/+ and MK3. Second print (insane benchy) got through without it. After that, simply load a new filament into the extruder. Pictures of boxes and shipping notices are considered low-effort and will be removed. Apr 21, 2021 · I figured out that if you disconnect the filament sensor and boot the printer, the bootup sequence detects that the filament sensor is missing and flips the filament sensor from [on] to [off] in the settings menu. Something was definitely borked. The problem is solved Thanks everyone! Filament deformed and stuck right into the sensor hole. Apr 6, 2025 · How to disassemble the filament sensor and side to clear broken filament. If you want to test your fila… The new IR filament sensor still uses an optical sensor but is triggered by a mechanical action designed into the new plastic parts of the MK3S, and MK2. g. When I unload filament it deliberately takes its time to very slowly pull out the filament so that it comes out clean. Turn off "Filament Sensor" in the UI panel 4. To prevent false readings, follow the guide How to clean the side filament sensor (XL). 3, PETG, stuck filament detection enabled, enXlosure open with fan blowing into printer (warm environment). 2 but afterwards filament sensor was re-enabled. What happened? The filament sensor on the print head of the Original Prusa MK4/S, MK3. When purchasing the Original Prusa MINI+, kit or semi-assembled, there is an option to add a filament sensor to the printer. 4mm with 0. 1. There should be no filament inside the extruder before the calibration process starts. I would think that the extruder would be completely empty before triggering a filament out notice. It can also be… To turn off autoload go into Main Menu > Settings > filament sensor [on/off] and turn it off. I had to reload it multiple times. STEP 9 Wizard complete Congratulations! The Wizard is complete. As a result, I can no longer manually load filament as the only option is autoload filament. My very first print on my factory-assembled MK4S (the benchy using the enclosed Prusa PLA) ran into it once. Jul 16, 2024 · Prusa XL, firmware 6. Terrible expereince. LCD indicates filament in extruder sensor but not in loading sensor. Anyone know if that one is supposed to be set, and if so, at what value? I can't find it being used anywhere in the firmware. 2 Firmware for Original Prusa MK4 When printing after the upgrade to 6. You can check that in the LCD Menu - Settings - Fil. The sensor is a Hall sensor, triggered by a mechanism composed of a spring, a magnet, and a ball. See the installation document for information on setting up Klipper and choosing an initial config file. So there it is. If the sensor doesn't like the way you swap the filament, or if anything goes wrong whatsoever, you're trapped on a "changing filament - 0%" screen, with no escape. This video goes through each one step-by-s Solved my filament sensor issue. Prusa CORE One May 25, 2023 · Reset the printer once more, calibrate the filament sensor. In case the filament has been unloaded, but the printer shows this error, remake the filament sensor calibration. That seemed to do the trick. 5/S, and MINI/+ can detect filament runout, but also whether the filament is moving regularly or not. Any suggestions would be appreciated. I would like a feature to be added to disable the side mount sensors while leaving the extruder sensors functional. Isn't the filament sensor still directly at the nextruder, so I can completely feed through my filament? And if my filament rest is not long enough anymore for the tube length then just print that couple of centimeters without the tube? Mar 11, 2023 · On runout, printer asks to Remove Filament from Sensor but will not release from extruder There are no "control options" only a message to "Remove the filament from the sensor" as it detected a runout. The sensor worked just fine after reset. Place a spool of filament onto the spool holder on the right side of the printer. If the "Tune" menu were accessible during a filament change, this would enable avoiding the issue as well. 1 and the problem seems to be How to replace Nextruder Filament Sensor (CORE One) How to replace Heatsink NTC Thermistor (CORE One) How to replace Hotend Heatsink (CORE One) How to replace the print fan (CORE One) How to replace the Heatbed Power Cables (CORE One) How to replace a Hotend Thermistor (CORE One) How to replace a Hotend Heater (CORE One) Below is a list of items from the Tune menu on the Original Prusa XL: Change filament Print speed Nozzle temperature Heatbed temperature Print fan speed Flow factor Filament sensor [on-off] Sound mode [loud-silent-assist-once] Fan check [on-off] Crash detection [on-off] Crash sensitivity XY [low-medium-high] User interface Footer Sort files When purchasing the Original Prusa MINI+, kit or semi-assembled, there is an option to add a filament sensor to the printer. I've removed the gearbox, removed the sensor and cut this little shit with a precision knife. Extruder In case the filament has not been unloaded, make sure that the nozzle is heated for the filament you are using. Anyways How to print with TPU: 1. If, for whatever reason, the main board is damaged, I'd love to just disable this sensor. Message to remove filament from sensor. Either by pressing the knob Nov 4, 2024 · unplug filament sensor start printer set filament sensor to "off" (Settings > Fil. Feb 14, 2024 · Additional feature request would be: If the sensor is active and detects a filament running out, offer the possibility to disable this sensor. I only use "Unload filaments" when I want to change filaments. Added M412 S0 to the top of my G-code file to try to disable the sensor. Hello fellow makers!A few days ago I got my first 3D printer - Prusa MK4. … Jun 10, 2023 · RE: Bits of filament get stuck in filament sensor Hm but that's not how the mk4 unload routine works in my opinion. I also found that the filament door was binding with the filament/sensor cap and removed the cap. 2 I got multiple times that the filament was stuck. SuperFINDA sensor calibration The SuperFINDA is the second sensor on the MMU3. The Prusa i3 Mosquito ® Upgrade Kit (MK3S+) has all the necessary components to replace your stock i3 MK3S+ hotend with a new Slice Engineering® Mosquito hotend. 5, ensure your IR filament sensor mechanism is properly calibrated before printing. This "bug" happens especially with a lot of toolchanges / filament changes and the Prusa Devs are aware of it (see MMU3 blog entry). My third print, using Prusament PETG hit it repeatedly. The Cold pullback didn't bring a solution , nor cleaning the nozzle or the extruder. The holes are probably caused by the filament not extruding until the extruder can grab it. Micro-controller configuration Format of micro-controller pin names May 9, 2024 · The printer should display one or more fallback options: Cancel (abort the filament change), Skip (proceed with trying to load filament in case the filament sensor is malfunctioning), Back (return to the "was the filament ejected?" screen), Abort Print, etc. Dec 28, 2023 · I would like to feed the filament into the nextruser as with the MK4 and mounte filament above the printer. Then open the Extruder idler Oct 17, 2024 · RE: Filament sensor stuck? Thank you for the link, but it is for the Mk4, not the Mk4S. Inspect the arm Step 1: Remove the filament sensor Remove the 2 screws on the filament sensor using an H1. 5/S, equipped with an MMU3 upgrade kit, can detect filament runout, but also whether the filament is moving regularly or not. All listed components are already assembled together. Enable them manually after Dec 28, 2023 · Can't load filament / disable filament sensor Ever since I first bought the MK3, the filament sensor wasn't working well and so I had disabled it. Do I need to bypass the first filament sensor and just run it without a PTFE tube to the extruder? The filament I am using is a 40D TPU with an average diameter of ~1. Indeed, it ran the spool empty and I *expected* the filament to be pushed back out for me to remove. Aug 21, 2023 · RE: MK4 filament runout failure - what did I do wrong? Good news, it wasn't anything I did! Something in the filament sensor was borked, had to take the front cover off and use compressed air to blow out the area. So can I disable the side filament sensors and only use the sensor in the nextruder? Just put a 3" piece of filament in the sensor for each Nextruder you have. For those who've gotten their multihead XL, is it possible to have the XL switch to the other tool head when the first runs out of filament? Would be really convenient to load two tool heads with the same filament, and when the first runs out, it just switches over to the other. Z axis test 6. Aug 6, 2024 · RE: How to disable the MMU3 Very simple: just deactivate MMU and filament sensor in the settings. broken wire or disconnected cable) and take appropriate action based on your settings. Dec 28, 2023 · I would like to feed the filament into the nextruser as with the MK4 and mounte filament above the printer. This feature was activated with firm… Feb 23, 2020 · You can use the menu "Unload filament" or "Tune / Change filament" and the printer handles the output and input of the filament respectively. Let the print run for 5-10 minutes, then simply cut the filament and wait until the sensor triggers it. Step 2:Inspect the arm Insert a piece of filament and observe whether the arm operates normally and whether it returns to its original Nextruder filament sensor (CORE One, MK4/S, MK3. Jan 12, 2024 · TPU Flex? What the heck is Flex? Must be an "Original Prusa" term like "Mesh". Files filament_sensor_reset_lq2. 9/S, XL). Things break. This feature was activated with firm… Filament ran out. mp4 Sep 7, 2023 · Arjen-hoekman commented on Sep 7, 2023 suggestion to have individual control for enabling and disabling the filament sensors currently, when you disable the filament sensors on the single-head XL you disable both sensors. Only solution I have found Oct 25, 2023 · Filament Run Out and You So, I just had the filament run out on one of my prints. Hit my first problem with the Core One yesterday, an old PLA filament I'd been using got stuck and wouldn't unload, I couldn't push it through from the sensor side, nor could I push it back from the detached hotend side. Jan 13, 2024 · Filament sensor questions I know that there is a sensor in the head as well as in the external sensor blocks. Well when I reinstalled the IR sensor board suddenly the filament sensor started working. 9/4, check the troubleshooting steps here: Nextruder filament sensor (CORE One, MK4/S, MK3. Begin assembly Fullscreen mode Contents There is a small metal bearing that is pushed against the filament above the extruder gears. 9/S, MK3. I don't really need it. Support Original Prusa XL Printer maintenance How to clean the side filament sensor (XL) | Begin assembly 1. First, you must make sure that the Filament sensor is turned on. 67 mm. I had mine in the wrong spot so it wasn't sensing that I had filament loaded. I am having the same issue. If you have any issues with the Filament sensor in the MK3. It's not convenient (and I doubt it's normal) to have to remove a piece of filament before I got again some errors on the Anycubic Vyper that my filament was insufficient, so I disassembled the sensor and used Gcode commands to disable the sensor with Pronterface. This product is the replacement IR Filament sensor for the Original Prusa MINI/+. If you have the Original Prusa MMU2S or MMU3 installed in the MK3S/+ or MK3. Disabling the filament sensor also worked. Prusa CORE One (assembled) Page 23: Step 8 Wizard - Filament Sensor Calibration When prompted, begin inserting the filament into the PTFE tube located beneath the right handle. To review it was reading "1" with filament in or out so I ended up having to turn it off. With the idler door open, I insert filament. Troubleshooting Guide Inspect the inside of the filament sensor Check if there is any residual filaments stuck inside the filament sensor. sensor [on]/ [off]) turn the printer off and on again check if the filament sensor is still turned "off" Expected behavior settings for filament sensor should persist after turning printer off and on again. Thanks to this component, starting from firmware 6. I was able to confirm the IR sensor was working by detaching it and testing it manually. Not sure what signal value should be, lever and ball are free and slot is blocked with filament in. The issue seems to happen 99% during tool changes when the tool is starting to extrude on the wipe tower. Show off your prints, or ask a question. In order to print reliably with this particular filament, the filament sensor needs to be off. It can also be purchased separately later. When there is filament the ball is pushed out which pushes a small arm which triggers an IR sensor. But by this time its already cooled down so it doesn't matter how quickly I pull it out. The current workaround I suppose is to just turn off the filament sensor and make sure you have a full spool. Then after a few seconds it finally releases it. Would be great to have the possibility to switch the toolhead sensor off at that moment, too. Nextruder filament sensor (CORE One, MK4/S, MK3. Had to detach the Bowden tube to remove a small piece of filament from sensor. Heater test 7. 10A. It's connected in the correct bottom row of pins and if I unplug the connector at the sensor the 1 (one) turns to 0 (zero) also have verified 5 vdc with Fluke meter at sensor connector. 9/S, and each tool of Original Prusa XL detects the presence of a filament and filament run-out. The side filament sensor on the printer may accumulate leftover filament over time. According to Prusa tightening the IR sensor board screw too much can interfere with the sensor Sep 14, 2024 · RE: Keep getting a filament stuck message on my MK4S Same here. Load the TPU and feed This is needed because the Hemera fan does not have a third wire to read the fan rotation From the printer's menu, disable the filament sensor with the menu Settings -> Filament sensor - On / Off As of today, the Bear Hemera does not have filament sensor, therefore it is better to disable it Sep 20, 2024 · If I disable the sensor it keeps printing but sometimes I will see gaps in the print or whole colors being skipped due to real filament suck. The filament sensor is working properly and detects runouts but when I press load filament nothing happens. You can't just manually force extrude and solve the problem in 10 seconds like an MK3. Know facts: Coincidences happen. I don't think it was dirty, as it was visibly clear, only the third print on new hardware, and occurred only during the out-of-filament event. 9/S Setup and Calibration | Prusa Knowledge Base English Login 3D printers Materials Parts & Accessories For Business Software 3D Models Community Help Courses Blog Company Aug 3, 2025 · "Filament stuck" has nothing to do with the filament inserted sensor. The printer attempted to back the filament out but was unable and produced a message on the screen that indicated I should loosen the idler and pull out the filament. 5 Allen key. Fortunately, there are at least five and possibly six ways to correct this. autoload Off". After the “autoloading is active” screen I click the selector wheel nothing happens. The filament sensor on the Prusa CORE One, and on the Original Prusa XL, MK4/S, MK3. … The message on your LCD saying Please open idler and remove filament manually shows up when the extruder motor does not succeed to remove the filament from the hotend/extruder. After the third or fourth time, I disabled the stuck filament sensor via the tuning settings, but soon noticed 4. Sensor Troubleshooting. Is there anyway to turn off the sensor (when I am sure there is enough filament left) during a print so that I don't have to throw away the print? Or, alternatively, electrically bypass the sensor so that the printer (at least during the print in question) is forced to know that there is filament? May 22, 2025 · I looked at the settings and there is an option to disable the filament sensors but it appears to disable all the sensors (extruder and side mount). I downgraded back to version 6. May 27, 2024 · RE: Stuck filament detection causing filament to get stuck? UPDATE: Issue solved 6. How to fix it? Check the PTFE tube that leads from the MMU unit to the extruder, and see if the filament has been unloaded or not. With filament sensor detection, the printer will be able to recognize if the connection with the sensor was interrupted (e. The filament sensor can be disabled from the printer menu. 25mm Configuration reference This document is a reference for options available in the Klipper config file. prusa3d. What happened? The filament sensor on the Prusa CORE One, and on the Original Prusa XL, MK4/S, MK3. Bypass the side sensor with a piece of filament (I leave them enabled. The descriptions in this document are formatted so that it is possible to cut-and-paste them into a printer config file. Lots of folks are disabling them) 3. The software overrules the user. Instead it hadn't budged and I now had to open up the hotend to remove it, and of course All things related to Prusa 3D printers. I go into Sensor info>Filament sensor. I have repeated stuck filament events without being detected, resulting in 'air printing'. Mar 11, 2023 · On runout, printer asks to Remove Filament from Sensor but will not release from extruder There are no "control options" only a message to "Remove the filament from the sensor" as it detected a runout. Jun 10, 2020 · The Mk3s Filament Sensor. vck 2ojpe k4gbu h91oe ipp yzmq pjrvae wcpw lm xx7yx