0. Don't mess with your printer unless something is broken. I spend several days focusing on the Z-banding but then someone pointed out that this could all be a result of the temperature changes. by Sachin Dixit Published Sep 27, 2022. Mar 18, 2023 · Marlin PID Auto-Tune Guide. i want to accomplish this with only a computer and sd card, i don't want to get Nov 24, 2020 · This video is part of a series of 10 videos that go through how to properly calibrate your 3D Printer, the videos include:Calibrating Your 3D Printer Overvie Dec 14, 2023 · Afterwards, it is highly recommended to do a PID Autotune after replacing the hotend. Check the wiring to the heating element and make sure it is secure and not damaged. This should bring up a list of all the Marlin settings that are present for your machine. Sep 17, 2023 · Fortunately, resolving this issue is pretty straightforward, as your Ender 3 / Ender 5 can automatically tune both the hotend and heated bed PID values for the target temperature of your choice with the M303 (PID Autotune) G-code command, which you should also be able to find in the menus of the LCD controller, such as in the example image below. The beauty of 3D printing lies in its ability to transform digital models into tangible objects and in the incredible precision this technology brings. Arakon nailed it in an earlier part of this post, The bed heater needs to be enabled in the firmware. Nov 26, 2018 · Tuning. 2 or 0. The Creality Ender-3 S1 Pro is a part of the renowned Ender-3 series, offering a balance between build volume and features. Its not too hard to tune a PID either, my process is as follows: turn on all fans to max. 1, less than a month old and about 100 hours worth of prints i'm getting thermal runaway errors. 1, after about 1 cycle the printer just randomly restarts and pronterface disconnects, but when running PID autotune then unplugging pronterface from the printer, the autotune runs perfectly fine, but I can’t see any results since I need pronterface, any suggestions? This command will prompt the printer to report its current settings, including the PID values for the hot end. Also, the Y-axis extrusion on the Ender 3 Pro is made from Aluminum, while the one on the Ender 3 is made from plastic. 00 I00. Connect Pronterface with the printer. Make sure to go back 1 menu and choose "Store Settings" to store the new PID values. I do a pid autotune to 10 cycles whenever I mess with something like fans, nozzle swap, etc. When I try to run PID autotune with my Ender 3 with skr mini e3 dip v1. h contains a line that determines how much the machine shall try to work out the curves. Check the temperature sensor and make sure it is securely attached to the heating block and connected to the Welcome to the Ender 3 community, a specialized subreddit for all users of the Ender 3 3D printer. XX DXX. Take note of the "M301" line, which shows the current PID values. The small difference in temperatures between materials should not necessitate a re-tune. Install a smoothing capacitor. Welcome to the best Ender 3 V2/S1 firmware. According to Creality, the wider extrusion gives the bed a more stable foundation, resulting in Welcome to the Ender 3 community, a specialized subreddit for all users of the Ender 3 3D printer. 3. PrusaSlicer is another PID-Tuning am Ender-3. While installing the firmware and re-configuring your settings can This is really the only major stuff you need to set up. Read on to find out! 2. I am brand new to this and I'm just trying to get my printer calibrated. and so far my temps only fluctuate like ±0. Pronterface PID Autotune Help. Set P to 16, I and D to 0: M301 P16 I0 D0 E0. This is an universal firmware that can be used in both RET6 and RCT6 STM32FX chips that have 256k or 512k Flash memory. S < temp > should be your printing extruder temperature. oh and btw 1,2 or 3 degrees fluctuation is normal. Run the M303 E0 S215 C8 command and wait for the process to finish. I notice with the Ender 3 S1 Pro, in advanced settings, there's a Temp. Increase the HOTEND_OVERSHOOT parameter. Then during the print it will fluctuate +/- 8°. When I start the autotune, the temperature spikes pretty quickly and quickly fails, either heating to 60 °C or 200 °C ( M303 C5 E0 S60) for either hot end Community for owners of the Ender 3 S1, Ender 3 S1 Pro, and Ender 3 S1 Plus. 5 and am unable to get the PID autotune to work. M303 : c’est la commande lançant le réglage automatique du PID. Load default settings or set X/Y Min Position to 0 and X/Y Max position to a large number bigger than your bed size. Tramming (5-20 minutes depending on how good you are, need a piece of paper) creality ender 3 pro, marlin 1. I saw some videos regarding the PID autotune but I could not find one for the Ender 3 S1 pro. A good PID tune will work in a variety of circumstances. first he is going to the temp i set wit S than suddenly he get getting warmer by 10 to 20 degrees. Run autotune in a stable environment. Edit: after observing the temperature, it seems to fail at around 204 degrees every time. When I used the command for the Bed, however, it grabs the hot end again. For my ender 3 it reads: #define PID_K1 0. Wait for the procedure to be completed. Just like the Ender 3 S1, the Pro version has the same Creality-branded power supply which is ok. With this advanced technology, you can now print a wider range of materials and achieve even greater precision and detail in your prints. than i keep getting Faild temp to high please sent help Creality Ender-3 S1 Pro 3D Printer: High-temp printing for more possibilities. Creality has beefed up all the specs for the Ender 3 S1 Pro in the hopes of creating a worthy upgrade to S1, but is it really worth it? Read on. 220 x 220 x 270. E0 — Tune the extruder (E1 is the heated bed) S230 — Target temperature. Connectez votre imprimante à Pronterface et lancer la commande suivante dans la console : M303 E0 S200 C8. 05 mm Y= 20. Pronterface terminal will show a few lines of code for the tuning while running but will show “PID Autotune finished!” when complete. 1. XX M500 Aug 31, 2023 · Jyers Firmware is a definitive step up from the stock firmware installed on your Ender 3 V2 with the many features it adds, ranging from enabling the M600 (Filament Change) G-code command for usage to making it possible to conduct PID autotuning directly from the LCD controller. h file to find whether the CLASSIC_JERK parameter is defined, which would indicate that your Ender 3 is using classic jerk, or send the M205 G-code command, where the appearance of X and Y values in the output would mean that classic ender 3 v2 Y axis PID autotune issues this issue has just started and only on the bed; I typed in pronterface m303 e-1 s60 u1 which is correct; the temp will reach 60 but will keep rising in temp past 67C which is when I disconnected pronterface and shut down theprinter; I checked the wiring and motherboard= no visual clues of damages, Im . PID needs to have a P, I and D value defined to control the nozzle temperature. C10 — Number of iterations. Zvol si jednu z níže uvedených možností: Jarová voda - vem si houbičku na nádobí, kápni na ní jar a pořádně to smíchej s teplou vodou (jako kdyby si myl Odd how you're bouncing around at the set target temp so much. No. 3d printing help. 32 mm. I was told to tune the PID using Pronterface and when doing so Jun 21, 2022 · Hotend PID tuning in Klipper. Looks to be pretty spot on for a graph. The steps are straightforward if you are using the Shiny Upgrades version of Marlin and have it turned on. I haven't done the new print yet to confirm, but you may consider starting there. Once at Temp, Double the P value until you see oscillations, give it at least 3 heat/cool cycles (~1 minute) then half it back to the last value. 2. Dive into the “Control” menu, head to “Configuration,” and explore “Advanced Settings”. This action causes theinstability of Ender 3 S1 Pro/S1 Plus LCD Kit Installation Info; Ender 3 V2 – Swapping to the 12864 Creality LCD for more features; Ender 6 12864 LCD Kit Installation Directions; Sovol SV06 Plus LCD Upgrade Kit; LCD Screens. Hopefully this article has helped you diagnose your Ender 3 Pro Thermal Runaway issues and assisted you in fixing it. I hope this is enough detail Dec 18, 2023 · Regardless, to find out which system your Ender 3’s firmware is currently using, which will be necessary for our purposes, you can refer to the Configuration. Ender-3 V3 3D Printer. It was heating up fine before i tried doing a pid autotune. May 18, 2022 · Creality CMS-350-24 Power Supply. Printer itself started as an Ender 3 Pro. in Marlin, configuration. S200 : Le test va être effectué à la température de 200°c. I have had this issue with my Ender 3 v2 for a while. In that case - if you enable PID_EDIT_MENU and PID_AUTOTUNE_MENU, you should find the PID autotuning option under Settings → Advanced settings → Temperature. Fundamentally as far as 3D printer design goes, the Ender-3 S1 PID Autotune Failing "Temperature too high". There are two drivers - a CH340 and a FTDI driver. If you don't have that anymore, you can download it here under Ender > Ender Series Firmware > 5 Pro). Set the bed PID autotune to 60C and 5 cycles, then run the autotune. Don’t forget to run MPC/PID autotune, figure out new z offset, and make sure your retraction settings are appropriate for the Sprite (0. E. 1, after about 1 cycle the printer just randomly restarts and pronterface disconnects, but when running PID autotune then unplugging pronterface from the printer, the autotune runs perfectly fine, but I can’t see any results since I need pronterface, any suggestions? Community for owners of the Ender 3 S1, Ender 3 S1 Pro, and Ender 3 S1 Plus. Post tuning, remember to save your settings to retain that equilibrium. E0 : C’est notre extrudeur, dans notre cas il n’y en a qu’un donc c’est le 0. Jan 19, 2023 · Updated Jan 19, 2023. 2. I could attempt to manual tune the PID from here but I'd rather use the autotune command if possible. If the temperature ramps up quickly and slows as it approaches the target temperature, or if it swings by a few Tune you Hot End and Bed Temperature (10-20 minutes - automatic!) Tune your filament extrusion rate, a. Apr 29, 2022 · In this video i'm going to show you what PID tuning is, why you should care about it and of course, how to do it on your 3d printer. Jul 18, 2022 · The Ender 3 S1 Pro comes with a copy of Creality Slicer 4. Thin meanwell psu. Ender-3 V3 KE. ), S (temperature), and C (number of iterations to run). Dec 9, 2023 · Here are some steps you can try to troubleshoot the issue: 1. 95 // Smoothing factor within the PID version 4. Hi there, I'm also in pursuit of that sweet spot between speed and quality. One way to fix your Ender 3 not maintaining temperature is making sure you’ve set the correct power supply voltage. You might want to look at your firmware. For me the CH340 driver did the job. Our new values will show up something like this: PID Mar 8, 2023 · The PID Auto-Tune would therefore be set as in the above example. Creality Ender-3 S1 Pro. Whether you're looking for guides on calibration, advice on modding, or simply want to share your latest 3D prints on the Ender 3, this subreddit is your go-to hub for support and inspiration. i have tried the PID autotune by using octoprint and with printrun but both faild. after mounting a Bltoutch on my ender pro 3 V2 and instaling the firmware for it i can't get my temp right. Zero Infill and Top layers. This command is M303 followed by the hotend number (E0, E1, etc. PID Jul 26, 2019 · PID tuning refers to the parameters adjustment of a proportional-integral-derivative control algorithm used in most repraps for hot ends and heated beds. Done! Start your PID auto tune command by sending the following GCode: "M303 E0 S200 C3" ( M= Pid command E= Extruder S= Target Temp C= Cycles) So you are telling the printer to autotune the hot end to 200 degrees and cycle it 3 times to average out. This firmware has the X/Y Min/Max position calibrated for an Ender-3 V2 or S1 without modifications. So, the Hot End will tune and all is well. 00 D00. 1 board use the 422 version. FFF. Set the Correct Power Supply Voltage. I got mine last Wednesday but haven't tuned anything. While installing the firmware and re-configuring your settings can I'm using the s1 pro profile. M104 S200 This produced the following graph, where oscillations can be seen. *Please make sure your part cooling fan is set to 100% (M106 S255) before continuing for best results. M303 E0 S220 ; PID Autotune Hotend to 220 degrees M301 PXX. Bed Slinger. You will see different values after it runs. I did a flow calibration print and it showed I need to reduce flow to 90%. Every time I power off my printer the issue comes back and I need to Autotune again. Conduct Marlin PID Autotuning After the Hotend has Cooled Off. More > Resin 3D Printers Dec 29, 2022 · About Press Copyright Contact us Creators Advertise Developers Terms Privacy Policy & Safety How YouTube works Test new features NFL Sunday Ticket Press Copyright Aug 31, 2023 · Jyers Firmware is a definitive step up from the stock firmware installed on your Ender 3 V2 with the many features it adds, ranging from enabling the M600 (Filament Change) G-code command for usage to making it possible to conduct PID autotuning directly from the LCD controller. 10. 2°C. This is the only video I could find but I am not sure if Save as 'PID_bed. 0, which is simply an older version of Cura with Creality branding and every printer its ever made pre-loaded. You will see different values after the autotune. 7 mainboard version, if you got a 4. •. Set the heatbed temperature to 60C. more than that is not. Your 3D printer might have a built-in wizardry called PID Autotune. For example, if you want a firmware for your Ender-3 V2 printer with a control These steps are only necessary for firmware versons prior to Ender-3 S1_Pro_HWv24S1_301_SWV2. If it still persists change the termistor and the heater cartridge. Mar 5, 2020 · PID Autotune failed! Temperature too high As a test I reset all PID values to zero. Heated Bed can’t reach target temp even after PID auto tune. Marlin has a built-in tool to allow users to easily come up with the correct PID values for their printers. "Sprite" Dual-gear Direct Extruder. My issue is that while printing I get fluctuations in my hot end temperature. Marlin's latest firmwares use a "no-overshoot" version of the PID tuning algorithm. Ender 3 S1 Pro w/Sonic Pad Beginner Calibration question. I'm going through the commands and every time it gets stuck sending the m500 command. The other 60mm fan is used for keeping the board cool and it’s also relatively quiet. Hotend: ( E0) 0. Print something! May 5, 2019 · Now that we have the 3D Printer connected to the computer, we can start the Hotend PID Calibration. Make sure your belts and V-wheels aren't too tight or too loose. 8. BLTouch. This can be a very annoying issue, but it is an issue that needs to be addressed immediately to safely use your Ender 3 Pro. This nifty feature adjusts and fine-tunes your printer’s heating dynamics. gcode' (or whatever, just needs the . To start the PID autotune, you will need to send an M303 command to the printer with the following parameters: E < extruder index >, S < temp >, C < count > U1 to the printer. Jun 19, 2023 · Here are some of the ways you can fix Marlin PID autotune: Change the thermistor. Mitch1967. The temperature will oscillate about 5 degrees away from the target temp. 88. If you have a Neo / Max or do some physical mod, you probably need to adjust your physical settings. 6mm toolsteel. 25 mm. A simple beginner's guide Předchozí: Kalibrace první vrstvy - Ender 3 (videonávod) Pro nejlepší první vrstvu doporučuji tento postup: Ověř si, ze hotbed (HB) je čistý a dobře odmaštěný. X= 20. Turn on Cooling Fans While PID Autotuning. Go to the Terminal tab. For being my first calibration print I feel like it turned out okay. Get the current PID settings using the M503 command. Apr 5, 2021 · Hello, 3D Printing friends! Today we're going to learn how to do a PID AutoTune on an Ender-3 V2 (but this works for any Marlin-based printer)!64-bit Pronter Hello, I am having some problems with inconsistent layers. Run the Marlin PID Autotune with filament inside. I. Set the layer height to 0. S1 Pro, inquiring minds want to know which is better. PID" in Ender 3 S1 Pro. I spent several days focusing on the Z-banding but then someone pointed out that this could all be a result of the temperature changes. Step 5: Running the PID auto-tuneIn the terminal section of Pronterface, type the command "M303 E0 S220 C3" and click the send button. Dieses ist angeraten damit beim Druck die Temperaturen stabil sind und es so zu einem guten Druckergebnis kommt. It's easy to convert Klipper's traditional PID values to the no-overshoot equivalent. Oct 21, 2022 · This latest printer, the Creality Ender-3 S1 Pro, has a lot to live up to and mixes open frame style with hints of product design. Replace the MOSFET. Its an original ender 3 using a silent motherboard. (I. New values will be spit out once it's completed. Go to 'Configuration' in the LCD menu and hit 'Save Settings'. After watching four or five YouTube videos and scanning the internet for some answers, I decided to post here. 6 motherboard using Marlin FW 2. I'm running at 2500 acceleration at the moment, should be doable for you too. Run the M106 S255 command in order to set your cooling fan to 100%. But this is my first printer so I'm not super experienced yet. Turn on the part cooling fans to 100% (can be done with M106 S255 command) Gobtholemew. I have tried Bed IDs of E1, EBED, the Hot End is E0, btw and not supposed to jump in the place of the Bed. Diese Anleitung funktioniert zum großen Teil auch an anderen 3D-Druckern. Read on to find out! When it comes to the Ender 3 S1 vs. Ambient temp is measured at 24C. Here, enthusiasts, hobbyists, and professionals gather to discuss, troubleshoot, and explore everything related to 3D printing with the Ender 3. SKRMINI version is currently for the BTT SKR Mini E3 V3 board (needs a screen adapter). If you see symptoms like that, you may have a hardware issue - or it may be as simple as running auto tune. What You’ll Need. Community for owners of the Ender 3 S1, Ender 3 S1 Pro, and Ender 3 S1 Plus. Turn off economy mode. 08 mm Z= 20. Shove SD card in your printer. Target temp 200C it will bounce between roughly 195 to 205) Because of this, my prints will not start. WARNING: The output in OctoPrint will be pushed out of the buffer by the Sep 2, 2022 · Learn how to calibrate temperatures on your 3D printer and resolve fluctuations! EDIT: I refer to the port on the Ender printer as a 'Mini USB', I should hav Ambient temp is measured at 24C. than i keep getting Faild temp to high I can't PID autotune my ender 3. Open. XX IXX. Open up Pronterface on your laptop or PC and ensure it’s connected to your printer. Finding the Min/Max position. ColdMedia696. For calibrating the hotend, I recommend following the steps below: Home the printer and adjust the nozzle position to sit in the middle of the bed, with about 5cm of clearance to the bed. The driver was on the SD card that came with the printer. What do u mean u cant looks to me like its holding just fine. Slicer Configuration. 08:53 03-18-2023. Just try printing with your current settings and see what happens. When it comes to the Ender 3 S1 vs. 0 + TFT35 E3 V3. a Extruder e-Steps (2 minutes, need a ruler and a pen or piece of tape) Ensure your bed is level relative to your hot end - a. PID section that has numbers entered, but nothing about "auto tuning," so if you have to do it the manually anyway with something like Pronterface, what's the point of that screen? I recently changed my nozzle to hardened steel When I try to run PID autotune with my Ender 3 with skr mini e3 dip v1. Open OctoPrint. I tried another autotune but to no avail. a. I have fresh formatted two sd cards to FAT32 and I've been looking for awhile on a way to solve this. If you can tune the bed PID (big if) it's M303 C<count> E-1 S<temp>. Change the PID values manually. In this article, you will learn how to calibrate these settings to allow your machine to Aug 8, 2021 · The “PID Autotune Failed! Bad extruder number” error typically occurs when you’re trying to calibrate your heat bed but the terminal window stops the process, showing you this text. I replaced the thermister, fan, and heat cartridge. Turn on the part cooling fan before the process, if you print with it on. Even Out With a Smooth Capacitor. 3. 12864 LCD – Missing Lines/Pixels; 12864 LCD Cable Connections – Correct and Incorrect Connection – Pictures Included; 12864 LCD Set the hotend PID autotune to 205C and 10 cycles, then run the autotune. M301 P00. i'm gonna change out the thermistors even though it's basically brand new but i understand i need to PID autotune or something. Jul 20, 2023 · 8. Vernier caliper or measuring scale. C8 : La tête va 300 x 300 x 300. May 13, 2022 · On the Ender 3, the Y-axis extrusion is 40mm deep and 20mm wide, while on the Ender 3 Pro, the slots are 40mm wide and 40mm deep. Jan 20, 2022 · It now uses a variable power approach which allows for fine adjustments and smarter, more accurate output. Ender-3 V3 SE. When required: Any time the hot end is changed, including adding/removing a silicone sock or altering part cooling fan/ducts. Jul 17, 2023 · #3dprinting #diy #3dprinter If you have these error codes on your 3D printer, issues related to the heating elements, you need the PID tune your printer. I recently replaced the printhead on my Ender 3, ever since then I need to run the PID Autotune or the temp will wander aimlessly around the target temp while trying to heat up for a print. Set the Perimeters to 1 or 2 maximum with a base height of 1-2 mm. Ringing Tower STL. Follow. Nachdem Marlin auf dem Ender-3 installiert wurde ist ein PID-Tuning ratsam. Replace the heater cartridge. PID autotune fail Hi, after mounting a Bltoutch on my ender pro 3 V2 and instaling the firmware for it i can't get my temp right. gcode file extension) on the SD Card. When it initially heats up to my set temp of 190° it overshoots it by about 15° and then drops back down to 190. Calibrating my Ender 3 S1 PID loop after Nozzle replacement from stockto Hardened Steel for Carbon Fiber PETG filament. The fan is not very noisy during operation (compared to a Mean Well power supply) so I can’t complain. Check the power supply and ensure that the printer is receiving sufficient power. The firmware and its wiki are not really Community for owners of the Ender 3 S1, Ender 3 S1 Pro, and Ender 3 S1 Plus. it will fluctuate a little the idea of the pid tune is to help it know when to turn on and off to maintain the temperatures (if I am wrong please correct me) it is an on off system not a wattage variable. 26F4_FDM_LASER; Starting with firmware version Ender-3 S1_Pro_HWv24S1_301_SWV2. install the proper driver for the serial USB connection for your operating system and printer board. Dec 15, 2022 · Here’s how to fix the Ender 3 not maintaining temperature: Set the correct power supply voltage. The Ender-3 S1 Pro 3D printer is featured with a 300℃ high-temperature capability that opens up new possibilities for high-temp printing. After doing a PID tune in Klipper, divide Kp by 3, divide Ki by 3, and multiply Kd by 0. In this case, pid auto tune is M303, and with that M code, you need to pass certain Welcome to the Ender 3 community, a specialized subreddit for all users of the Ender 3 3D printer. Mar 20, 2022 · Looking to auto-tune the PID settings on your printer to improve print quality? Learn how 3D printer PID tuning works! Jun 1, 2019 · Use the command M303 E0 S225 C10 to start the P. Someting similar happend to me before, the hotend thermistor was not all the way into its place, so i pushed it with a riny allen key and the problem was fixed for some time, until the problem Sep 27, 2023 · Ender 3 (Pro & V2 & Neo & S1) Cura Start G-Code Configuration. When running a PID tune, the firmware decides on a smoothing. Welcome to the Ender 3 community, a specialized subreddit for all users of the Ender 3 3D printer. 9. 0 running their software. After doing a pid calibration at 215c for 8 cycles i saved the values to eeprom, then tried to start a print, only to be met with e1 heating failed. The error usually takes place when you’ve entered the command incorrectly in your G-Code terminal window. its cheap. Any time the bed is changed, such as adding a glass/mirror plate, magnetic spring steel sheet and/or under bed Sep 27, 2022 · Enderstand the Differences. PID Autotune Aim: To ensure the heating of the 3D printer nozzle and bed are safe, stable and consistent. Change the target temperature. 3, and 427 is for the 4. Auto Tuning. Enter M303 E0 S230 C10 to start autotuning M303 — Command to tune. Conclusion. Select the file via the LCD menu of the printer and hit Print. No-overshoot Kp = Recommended Kp / 3. As your 3D printer runs the commands within the Start G-code section before each print, configuring this code block in the most optimal way possible is the best way to ensure that the printer reliably carries out all the preparation tasks in a time-efficient manner, which, over time, adds up to quite a lot of time saved. It keeps the open design for easy access while providing an increased build height for taller prints. k. 8/40mms is an adequate starting point) Edit: this really only covers the firmware side. Auto leveling. 2, 423 refers to the mainboard version 4. Working on upgrading my Ender 3 to a dual extruder setup using the Winsinn dual hot end and MKS Base V1. Advertisement. I've modified my Ender 3 V2 to a Direct Drive setup and installed Klipper firmware (among other mods). "Temp. The E-1 means the bed. This firmware is based on Marlin, has been optimized and has enhancements for the Creality Ender 3 V2/S1 and similar printers (Neo/Max/Plus). Check all the Suppress message checkboxes. Jan 18, 2023 · Let’s go over the step-by-step procedure of manually setting up Input Shaping in Klipper. Head is a microswiss direct drive, nozzle is 0. Ender 3 S1 vs S1 Pro: The Differences. Hello, I am having some problems with inconsistent layers. D. The command you just entered will tune your hot-end to 225 degrees and it will do the tuning cycle 10 times. 00 M500 Then set the printer to reach 200 °C. 26F4_FDM_LASER as of 2nd Feb 2023 the XYZ distance from the nozzle to the probe trigger-point is set correctly in the firmware. Als erstes sucht man sich ein Terminalprogramm mit dem Got my new Ender 3 a couple weeks ago. i tightened all the screws and connections i can. Control board is BIGTREETECH Direct SKR Mini E3 V2. Final Thoughts. Printer is in a creality tent. Your printer will return the current PID settings. ih mn bw oc wu hg yn sh oh dl