Make your own inline filament diameter sensor (under $5)!

Подписаться 486 тыс.

Просмотров 177 тыс.

50% 1

Let's take a closer look at the inline filament diameter sensor - available for DIY now!
Become smarter in 5 minutes by signing up for free today: cen.yt/mbthomas... - Thanks to Morning Brew for sponsoring today’s video.
Download the design and all files (Fusion source files, Eagle PCB design, Firmware) www.prusaprint...
or www.youmagine....
Some of the parts required (full BOM at the links above)
SS495A linear hall effect sensor go.toms3d.org/S...
ABEC-rated 623-ZZ bearings go.toms3d.org/6...
6x2mm magnets on Amazon go.toms3d.org/6...
PTFE tube go.toms3d.org/b...
Filament used:
Prusament PETG go.toms3d.org/P...
Firmware:
Daniel has uploaded the firmware to Github: github.com/drs...
For now, this is the recommended repo to develop against if you want to contribute to the code.
Product links are affiliate links - I may earn a commission on qualifying purchases (at no extra cost to you)
Previous video about the filament spool diameter measuring device: • How precise is your fi...
🎥 All my video gear toms3d.org/my-...
I use Epidemic Sound, sign up for a 30-day free trial here share.epidemics...
🎧 Check out the Meltzone Podcast (with CNC Kitchen)! / @themeltzone
👐 Enjoying the videos? Support my work on Patreon! / toms3dp

Наука

Опубликовано:

28 сен 2024

Ссылка:

Скачать:

Готовим ссылку...

Добавить в:

Мой плейлист

Посмотреть позже

Комментарии : 546

@ameliabuns4058 3 года назад

i wish you actually tested this on a printer with cheap filament. I wanna know if it makes a different

@alf3071 3 года назад

if the filament is too thick it will get stuck in your extruder tube leading to failed print or maybe worse

@thenewchannel1329 3 года назад

@@alf3071 Yes, this is a really good application example. You could use very cheap filament with this sensor and the sensor tells the machine when the filament is too thick and stops automatically. Furthermore, this sensor would serve as a filament runout sensor. Thus it would be a multifunction filament monitoring sensor.

@GamesPlayer1337 3 года назад

11:50 THIS is the reason i love you. Seriously dude, thank you for everything. Best 3d printing channel together with cnc kitchen as being the more analytic half. Great job as always!

@dakotapahel-short3192 3 года назад

THANK YOU! This is a nice step forward. I'm excited to see the open source community run with it!

@ktimo100 3 года назад

I would love to see the filament maker in action!

@3dloon430 3 года назад

Yes, seems odd.

@t.josephnkansah-mahaney7961 3 года назад

I am surprised he still has it! LOL.

@Crits-Crafts 3 года назад

Would be fun

@tobiash5369 3 года назад

Very interesting, please show it to us.

@ominguti6345 3 года назад

I second that :-) even if it didn't work that well it is interesting. I would like to make my own filament extruder one day and hearing about potential issues with one is very valuable.

@kylek29 3 года назад

I'd love for you to consider redoing the filament maker in a updated 2021 video, using the knowledge you've gained since building it, the things you'd change, the tricks to make it cheaper. Kinda like you went over with the Infidel sensor.

@souravghosh7903 3 года назад

Thanks Thomas, for such a wonderful gift.

@kylerandall9141 3 года назад

Well, here's another data piece that Stefan can start including in his filament strength tests. "Was the filament over/under sized during the printing of each test part?" I love the tinkering/constant improvement in this hobby. Thanks for giving us another tool in our toolbox!

@a_student0 3 года назад

This is a great contribution. Thank you Tom 💚🙏

@TheBPJo 3 года назад

This is a great idea and project! Some (hopefully helpful) critisism: If I'm not missing something, your sensor only provides the intended information under the assumption that the filament is perfectly round. It measures the diameter at a specific point, but not if the diameter is consistent. So actually you can not transform this into information about adaptation of the flow factor. You mentioned that better quality filaments are usually not oval - but imo they also should have a consistent diameter. I think this is idea has potentially higher impact for cheaper filament and to be able to compensate tolerances better.

@spikekent 3 года назад

Awesome work as always Tom, a very interesting project. Also very apreciative that you open source your work.

@Dalenthas 3 года назад

Thank you so much for leaving the "vun volt" flub in, it made me laugh.

@michaels3003 3 года назад

Sadly, most people have never heard of Alessandro Volta

@someguy2741 3 года назад

I was just called that on site the other day. How conveniently personal :p

@RomanoPRODUCTION 3 года назад

Oops! Never again ☺️☺️☺️☺️☺️

@brokenshoe1775 3 года назад

Yes please cover the filament extruder maker thing I've been dying to soon if there's a doable homebrew way to recycle my pla

@FrodorMov 3 года назад

Cool! So, I can imagine that when measuring the diameter you'd want some sort of filament speed correlation as well. It could make sense to integrate a speed measurement in this thing too, perhaps also a magnet that rotates with the bearing, measuring its rotation and thereby the filament velocity ? Could then also be used to close the loop between extruder motor signals and actual filament extrusion. Imo a closed loop extruder motor isn't enough because the filament can still skip. Well, here the bearing would have to not skip over the filament too. Edit: thinking about it, it seems more likely to me that underextrusion due to the way the extruder drives filament, is a more significant factor than the filament diameter.

@MadeWithLayers 3 года назад

Of course there are tons of features that could be added - for now, I just wanted something that does this one function well.

@FrodorMov 3 года назад

@@MadeWithLayers I understand. My point was (see edit) that if you're going to use this to prevent over/underextrusion, I think the filament speed is more significant and should be looked into first. But that's just my idea though.

@overclockist 3 года назад

Thank you for this, Amazing work toward the betterment of printing and the open source community. Hats off to you!

@sparrowthenerd 3 года назад

can you please talk about that filament maker? I'm super curious

@motomech83 3 года назад

totally solved the problem of at home filament making so if its used in the extrusion and the print process pulling through an oversize nozzle seems to be the most effective but only see the laser sensors on expensive extruders

3 года назад

Tom, this is amazing! I aim to know enough to integrate this on a machine of mine one day. Your university project and other DIY solutions like the PETbot are inspiring and would be great to pair with homebrew filament production/recycling!

@emufasar1789 3 года назад

You should put a rotary encoder on the idler bearing like the btt smart filament sensor does so that it can detect filament jams aswell as measure diameter. Would be the best all in one filament sensor and would cost very little.

@saddle1940 Год назад

Thanks for the design. Could the design be changed tp read the movement of the filament as well as the diameter. I was looking around for something that could be used to notice the nozzle is clogged and filament is skipping in the extruder. I could imagine using a mouse centre wheel quadrature encoder attached to one of the bearings to do that job.

@ktimo100 3 года назад

Doesn't the drill bit calibration affect the magnetic field?

@francistaylor1822 3 года назад

It's on the other end of the lever, so I doubt any detectable effect.

@ktimo100 3 года назад

@@francistaylor1822 Ah you are right, I forgot about that.

@Gengh13 3 года назад

This is awesome, as always thanks for your contributions to the 3d printing community. I hope now the duet guys will show a little interest in this feature, in the past they weren't interested when I requested it.

@interficiam 3 года назад

Could you show some prints with and without the sensor on a printer? To see what difference it makes. Thanks.

@iAmTheSquidThing 3 года назад

Combining this and vibration correction has the potential to produce some seriously clean prints.

@nicholasmistry4954 3 года назад

Two thumbs up for the cutaway

@CyberOne 3 года назад

This is a good design and your ideal of using a V-slot bearing is a good idea as well. Just to build on the idea a bit, using the V-Slot bearing on the moving arm of the sensor and then using a wheel with a bit more grip on the other wheel with a slotted disk and a photo interrupter would allow for the speed of movement or distance moved through to be measured. This combined with the filament diameter could then not only detect the diameter of the filament but also filament out (can already do this :-) ) but also if the filament jambs of breaks past the sensor. Just a thought. :-) Keep up the good work Ray

@johnny5634 3 года назад

Hi Tom! Can the tiny85 code be used directly on an arduino if I substitute the analog pins of the tiny85 with the analog pins on the ardino uno?

@Username-yv9pc 3 года назад

please show the filament maker as i want to make one too, to recycle my filament for prototyping !

@ChickenTandies 3 года назад

Yes PLEASE cover that filament extruded setup!

@Masterpj555 2 года назад

i love it but the only thing that may need to be done is a timing offset for the filament signal. When you feed filament in the tube someone could feed all the way through... put a line on filament with a sharpie and then back up the filament.. if that measured length in mm can be inserted the offset for accurate timing vs multiplier could be calculated! :)

@alha3869 3 года назад

In order for the extruder to compensate the thickness difference of the filament it must know the distance between the sensor and the extruder or? I assume this feeds live data from the point where the bearings touches the filament, but it will take some time before that point of the filament is consumed.

@murch6318 3 года назад

But, does it produce prettier prints?

@james_snook 3 года назад

Totally would love to see you go over your filament extruder

@rodsnyder6020 3 года назад

If I havent overlooked anything then Prusa could implement this in their MK3 chimney design. They only need another magnet and replace the optical sensor with the hall effect sensor. Then the extruder gears become the sensor itself. Their tension should be enough to compensate for debris messing up the reading.

@jacksoni349 3 года назад

Would this function with the Duetwifi and ReprapFirmware?

@danielsmullen3223 3 года назад

I think this is a great design and has a lot of potential. I am tempted to create a pull request for your code to introduce a feature which not only interpolates the calibration values based on the known diameters of the tools, but also through using a statistical test with repeated measures to ensure the calibrations are providing both accurate and also repeatable measurements. I believe the Prusa firmware does this with the PINDA probe, which uses precisely the same theory of operation as this sensor. You might notice that it takes several repeated measures on each calibration point on the bed. Averaging these measures can help improve the accuracy of calibration values during a calibration cycle, but if it also incorporates a statistical test to ensure that the values are within the expected range for this sensor then anomalous values can be prevented from affecting the recalibration (and can also be used as a self-diagnostic in case the sensor is no longer within acceptable calibration). If the LED is programmable based on the PCB design, that would be very useful for giving feedback to the user about what is happening if things go wrong during this procedure.

@danielsmullen3223 3 года назад

Tom, you didn't put your firmware or PCB design files in any kind of version control. Would you be able to put them on github perhaps?

@MadeWithLayers 3 года назад

Never used github before - but feel free to upload the firmware and I'll be happy to link to it as the recommend firmware choice!

@danielsmullen3223 3 года назад

@@MadeWithLayers I created a new public repository on GitHub which is tracking everything you released. This can also version control EAGLE files since they're in a plaintext file format. I updated some of the filenames and folder structures to adhere to more common naming conventions, hopefully it will make the repository easier for people to navigate. Since this is public people will be able to fork it, make changes, and propose changes that can be reviewed and incorporated back into the original with pull requests. You can find a link here: github.com/drspangle/infidel-sensor/ Edit: I realized that you specified CC0 for the license on this, so I've updated the repo accordingly. I'd been trying to get in touch with you, but there's no emergency about it.

@MadeWithLayers 3 года назад

Aaaad.. done! Thanks for uploading!

@andreasbeier2431 3 года назад

Where is the print test?!! I wanna see if it does anything!

@sfahadrizvi 3 года назад

May be add some sort of encoder on the bearing on the input and that could be used as a filament motion detector/sensoe

@stevecummins324 3 года назад

Relaxation oscillator from constant current device charging a variable capacitor, a programable unijunction transistor, trigger voltage set by constant current across resistor.. Frequency of on/off discharge pulses linear wrt to capacitance change. Arduino library to read frequency etc Capacitor can be DIYed from two semicircular conductive plates. One fixed... Other free to move as arm rotates.

@jacquesblom2312 Год назад

My main reason for wanting this is that I make my own filament from PET bottle. It's not 100% good consistency and sometimes a short length will become oval as it does not shrink down properly, thereby causing jams. If I can detect that early enough I should have very little failed prints from then on.

@marcnadeau2367 3 года назад

what about adding a filament cleaner ahead of the InFIDEL to prevent any false readings? Could be a simple wiper made out of a sponge.

@101rotarypower 3 года назад

Exactly the kind of things I like to see, Thank You Tom! I hope this inspires more development.

@reddcube 3 года назад

If you add an encoder off the idler bearing, then it could also be used as a filament jam/runout sensor.

@tictax319 3 года назад

That is what i call very good engineering. Like your attitude to make it open source and avalible for companies. Cant wait to try that out and see if it is usable with Marlin. My 32 bit Board sould be able to handle it right ? Just build a Runout sensor wich will be obsolete soon, ups xD And yes please make a Video on the Filament line. I would love to see that. Good work! Every Video is a pleasure to watch :)

@MadScienceWorkshoppe 3 года назад

Yes, anything that can read analog. Just be sure not to give it 5v if it can only handle 3v3.

@cdl1701 3 года назад

Would love to see this as well as a filament runout/movement sensor all incorporated into one unit.

@oleurgast730 3 года назад

Very interesting solution. Maybee an idea for future improvement: add an output for filament runout. If the "Diameter" is less than a mm it is pretty sure the filament is runout. Also if the filament diameter exeeds 1.9 mm, it will get stuck in the Extruder, so to prevent it, the runout should also be triggered then. It would be very helpfull when trying new filament with unknown quality.

@Eff917 8 месяцев назад

Just stumbled on this, and I had an idea: this could be upgraded to also include a runout/jam sensor. Just coat the bearings in rubber, add an optical encoder to one of the bearings.

@KellyBC 3 года назад

This is a very cool idea! Thanks for putting in the effort to get this out in the wild.

@guillaumejaouen3429 2 года назад

Awsome work :) , I start ordering components and pcb to build 10 units. I just need to add an encoder wheel and some electronic to this design to allow the sensor detecting clogged nozzle too. As 'im priniting at 233mm/s on a little slinging bed printer I can't add weight to the printing head and will use ptfe tube to link it to the extruder with a known distance.

@corgano6068 2 года назад

I like this, any way you could do a v2 that also includes an encoder? I have a printer (doing 3mm filament) that often jams and "prints" nothing. Adding an encoder to this, you could have it not only feedback the width of the filament but also either a pulse to show filament is moving (marlin supports this already! BTT smart filament sensor) or even recorde the rate of motion for closed-loop control

@Kaliumcyanidful 3 года назад

That filament maker looks nice, would Love too see it revised! :)

@Datadog-1 3 года назад

Definitely want to see more on the filament maker

@PattysLab 3 года назад

I've been thinking about this for a very long time but the hall effect sensor did not click to me to use as the heart of the sensor. Also really clever to use interpolation and drillbits for the calibration!

@JBGecko13yt 10 месяцев назад

Great explanation! I found your content because I am researching a way to feed filament with a button push but once the filament reaches the destination and encounters resistance I want to be notified. think, I have filament, somewhere not next to the machine but I need to easily swap filaments for single color prints. but doing this manually (pushing the filament home) is not cool. :)

@mathieupellieux9468 3 года назад

Elegant and smart design :) I wonder how it behave with the marks done by a dual gear extruder. Material is being scattered between crests and vales on both opposite sides of the filament while the amount of material is the same.

@Nachmed 3 года назад

Comparison print test, one with sensor and another without, will be interesting to see!

@birdpump 3 года назад

Yes, that filament maker looks super cool

@mikemike7001 3 года назад

Of course, the next step is to see if this makes a noticeable or measurable improvement in print quality using a range of different filaments. Wonder if anyone has any data showing an observable improvement in print quality using Prusament vs. filament whose diameter is less precisely controlled. If they do, this would be some indication of whether using such a sensor is worthwhile. It's pretty darn cool regardless.

@MarinusMakesStuff 3 года назад

Super great design Tom! I especially like the Arduino compatibility. Wouldn't it be possible to use pins on the Ramps, since it uses a Mega2560?

@johnmoser3594 3 года назад

Thermistors are linear, but hall effect is polynomial due to square of the distance stuff. I'm working on a clone that uses a pi pico; I was just porting the code but uh…I ended up reimplementing everything. I'm also experimenting with using a segment of a sphere to friction-fit the bearing, since you can totally lock up the center of the bearing and the outside rotates because that's the whole point of the bearing. That changes your $3.20 custom board to a $4 (€3.36) pi pico board plus like 5¢ of headers (or some solder) from AliExpress. Not free, but not terrible. With a little luck, I might be able to knock out some of the fasteners, as I think I have a design using three 623zz with no dowel pins or screws, plus the magnet and hall sensor. Maybe €0.35 more expensive than yours.

@Kekht 3 года назад

Cool project. Thank you for sharing it with community. I hope Marlin and other firmwares will get support of it.

@fred-9929 3 года назад

Very nice design! Great job, thanks for such usefull device.

@WoLpH 3 года назад

I just got a nice idea here... it would be really nice to replace the filament sensor in the standard prusa mk3/s extruder with this sensor. It can also detect filament, but can do much more. That seems like a very doable mod :)

@gizmobowen 3 года назад

Instead of using the separate board, I wonder if it could just be added as an input to a Raspberry Pi running Octoprint? Then if there was a plug-in you could use the information that way? Thanks for presenting this Thomas.

@MadeWithLayers 3 года назад

The RasPi does not have analog input, but I could absolutely see the I2C interact wired up directly to the RasPi instead of the printer's mainboard.

@garrettsgrotto8438 3 года назад

filament strider video please. that thing looks like project id love if possible

@adityaagarwal6719 3 года назад

please make a video on DIY filament maker/recycler

@thomaswiley666 3 года назад

Just a few notes from the peanut gallery: 1) Any variance for PLA carrying a static charge? lol 2) @6:30 - How about another set of spring tensioned roller bearings at the end (left side of the object) instead of a full length of bowden tube? Add a small threaded insert (that matches thread size on the bowden coupler) with enough threads to screw into your hotend radiator. End result - I'm betting this will put enough tension on the filament to act as a direct drive, perhaps?

@MVFreeenergy 2 месяца назад

Hi Great product but on major flaw that nobody had though about it cause event filament is breaking inside filament loader it will no longer to be able to detect it! Cause it primary function is only detect missing filament! It's need filament movement detector like consumption it will be done by adding a roller that will detect if roller is stopping! With that feature you could say 100% bullet proof on both case

@ZakLeek 3 года назад

This is a very cool device Tom! I really like the use of the hall-effect sensor and magnet, very clever. I will probably make one at some point but I don't think I really need one. I'd love to see a video about your filament extruder, it looks really interesting and I was thinking about designing one to make custom filaments. I don't the name but I recently saw a device that cuts filaments and joins them together so they look almost like multi-core cable, maybe try building one of those. Thanks for the brilliant video! 💙💛🧡

@crussty3d 3 года назад

I really like this Tom! How hard would it be to add in a small OLED/LCD to give real-time readouts on the unit itself?

@MadeWithLayers 3 года назад

With a different MCU, it should be trivial. ATTiny is out of pins unfortunately 😉

@ColBol7 3 года назад

@@MadeWithLayers I2C is a bus so an I2C display shouldn't need any more pins.

@mikemike7001 3 года назад

@@MadeWithLayers One could use an ATtiny84 to get more I/O pins at little if any additional cost. Neither the ATtiny85 or ATtiny84 likely has enough memory to support driving a display, I2C or otherwise. Would be interesting to explore.

@ColBol7 3 года назад

@@mikemike7001 Driving an I2C display with an ATTiny85 can be done but as you suggest memory is the biggest issue. If any one is interested in an example Search for attiny85 interactive name tag.

@mikemike7001 3 года назад

@@ColBol7 Thanks. The name tag code looks like something I could use for other projects as well.

@fabiangro6857 2 года назад

Is there something new on this really cool project? How to get this work with Marlin?

@_Piers_ 3 года назад

It would be great to see you extrude purposefully bad filament and then use the sensor to print with it.

@martyngriffin5943 2 года назад

Where do I find the info on printing the case and making the sensor. I plan on using it on my ender 3 max with marlin. Nicely done.

@H34... 3 года назад

Looks pretty similar to the idler on an extruder, why not integrate this directly into the extruder mechanism?

@light-master 3 года назад

If I modify the housing to fit it, would there be any issue with using a 6x3mm magnet, cuz I just bought 200 of them for another project?

@claws61821 3 года назад

Shouldn't be. The only potential problem which comes to mind is field strength of the magnet, and that's already accounted for by the calibration step.

@Augus1997 3 года назад

I really like this project but I can't find any guides or tips on how to connect the sensor to the printer. I'm currently using a Prusa MK3s

@ScottHess 3 года назад

Is the idea that you could vary the extrusion speed based on filament diameter?

@TheTrueLinky 3 года назад

Das kommt auf mein klipper drucker das steht fest, klipper unterstützt hall effekt Sensoren schon lange und da könnte man das auch relativ einfach mit den button kaliebrierung integrieren 👌

@ahmmadaswad1290 3 года назад

Great job ...thanks can you tell us more about your experiance in making your own filement maker ... Why dont you give the new sensor another test with filement maker..please

@JustKyzuuh 3 года назад

would be cool to see a 2-axis measurement device inside the same mechanical package. even though the filament isn't very ovular

@ellisgl 3 года назад

I can see this combined with a filament distance measuring device.

@michaelmulligan5192 3 года назад

I was thinking the same. I wouldnt want to add the weight to my extruder head, and would love to add this to a know. Length of Bowden tube. Coupled with and OctoPrint plugin, or a beefier AT to store and delay the diameter until the diameter GETS to the extruder would be incredible. I can see that even being a thing if you have it mounted at the extruder anyway. Would likely need two additional outputs, if the board did the delay (addition of the delayed diameter and motion output), but would be an awesome addition.

@jakuborsak8090 4 месяца назад

Hi, thank a lot your description and ideas.. but i need little hepl with the SMT control board (populated)--- where can i buy it? or i must make it by myself?

@justanotherfan695 4 месяца назад

It seems that we have ran into the same problem

@andreasmohr7835 3 года назад

I would really like a video on your filament extruder

@plaetzchen86 3 года назад

Great work! How do you make sure that the drills for calibration don't interfere with the Hall-effect sensor? Couldn't the metal lead to magnetic flux?

@lunarz7117 3 года назад

Please make a video explaining about that filament maker.

@williambaker795 3 года назад

Which PCB manufacturer did you use? PCB + assembly + deliver for €30 is insane!

@MadeWithLayers 3 года назад

JLCPCB (they were sponsoring the last video about the spool measuring device) I ordered 10 at at time and am giving away the rest to devs.

@mr-gadget 3 года назад

I am watching already quite a while your projects and thought it is now time to leave a sub 👍 Great content, interesting to watch and listen. Greetings from Bavaria 😉

@rl1111rl 2 года назад

Tom, could you show us an A/B comparison of prints with and without a diameter/thickness sensor? Does RepRap support it?

@MasterFX2000 3 года назад

Next time maybe try to use the optical filament sensor of the prusa. Or is the resolution and FOV not sufficient?

@MadeWithLayers 3 года назад

The optical sensor tracks filament movement, but has no way of detecting the actual shape of the filament.

@MasterFX2000 3 года назад

@@MadeWithLayers Mmh, some years ago I did some experiments with optical mouse sensors and I get an complete image of the stuff under the mouse-sensor. It's basically a digital camera with a resolution of 16x16px (ADNS Type). If you have a sensor with good dpi this should be possible

@jasenmorin4936 3 года назад

did you add a cut off for if it runs out of filament?

@riksteen4933 3 года назад

Nice sensor How precise are the like 0.01 mm or 0.001mm thank you

@TaylorSchumacher255 3 года назад

Excellent video and thank you for open sourcing the project

@maxmustermann2596 3 года назад

I see that it is better if the sensor is as close to the extruder as possible. On the other hand, it is probably better to keep it away from any moving parts and vibrations, isn't it?

@marcel7576 3 года назад

This is awesome and thank you so much for making it opensource, I am going to make the sensor and add it to my printer.

@yura979 3 года назад

If I use 6x3mm magnet, should I make software or calibration changes, or just making sure it fits is enough for it to work properly?

@asgerjrgensen1414 3 года назад

Thanks for all your great videos. Do you have a link to those V 623 bearings ?

@eazeh 3 года назад

Please!!! Videos about Filament making/ Filament extruders/Filament Recycling!!!!

@chrisnurse6430 3 года назад

Great work mate and nice use of microcontroller

@nathan1sixteen 3 года назад

1,000,000% would like to see a video on the filament extruder

@TFlorian 3 года назад

I dreamed to be able to measure my filament while printing ... Is it possible for you to crowdfunding your product (at least the PCB and chips ? ) I know you share all and I'm so happy for that, but it could be event "better" if a kit is available as not every one have soldering skill / will order 10 PCB to use just one