Filament sensor



  • As I was playing with mouse optical sensors from Pixart Imaging inc. (www.pixart.com.tw), I found this sensor:

    http://www.pixart.com.tw/upload/PAT9125EL_GDS_V1.2_31052017_20171011150843.pdf

    With a guy from our hackerspace, we asked Pixart to buy one, to make tests. But:

    • they want us to sign a NDA for the full documentation;
    • they want to sell them by hundred.

    As we discussed, they admitted having a customer using it as filament sensor. Of course, it is Prusa 😉

    So, it seems this product is not easy to obtain for simple hobbyists as us, but for a little company, it could be a interesting device.

    So, what about selling a complete filament sensor board based on this chip? Is it something escher3d could do?



  • +1

    Looking at the datasheet - this is basically a perfect fit for filament movement sensors!
    I would definitely get one for my printers!

    Just curios, did they actually confirm & disclose one of their customers, or did you conclude "it has to be" Prusa, because they are the only ones on the market with something comparable?



  • Just a guess. And if you look at the Prusa sensor, it looks exactly the same.



  • this seems legit. i ll buy it in seconds



  • Did they announce a price for those 100 pieces?


  • administrators

    We're one step ahead of you! We already have the prices for that sensor and we will evaluate it shortly.



  • I'd give the idea a +1, the filament monitor beta we have now works, but it does seem clumbersome compared with something along the lines of the optical sensor prusa are using. Also ability to do filament presence and movement? I'd buy two for sure, I'm quite sold on the idea of filament sensors based on beta testing the mechanical one, they do offer something worthwhile. And there seems to be some traction for them right now, youtube 3D dudes making videos about them etc…



  • Agreed - this seems to be a great sensor to add to my Kossel Mini.



  • What would an ETA be on a duet3d version? Will the beta sensor be scraped for this? I need a few…lol.



  • @dc42:

    We're one step ahead of you! We already have the prices for that sensor and we will evaluate it shortly.

    Great news!



  • Id buy one for sure! I was never thrilled about the idea of the duet filament sensor getting pinched between two gears. However, I trust that the Duet crew and beta testers knew better than me. THe proof is always in the pudding. I would have bought one of those and been just as excited about it once it got the seal of approval. I do like the idea of nothing touching the filament though.


  • administrators

    @hamel:

    What would an ETA be on a duet3d version? Will the beta sensor be scraped for this? I need a few…lol.

    We need to evaluate this sensor before we decide. I doubt we will make both.



  • I would also love to know when the filament monitor will be ready for sale. I'm in need of quite a few.
    Jake


  • administrators

    Sadly the maker of the laser sensor has long delivery times, even for the evaluation kit (which we ordered 2 weeks ago). So we won't be able to do the evaluation or make a decision on which design to use for a few more weeks.



  • Regardless of what you folks decide, put my name down for purchasing and testing a sensor.



  • @dc42:

    Sadly the maker of the laser sensor has long delivery times, even for the evaluation kit (which we ordered 2 weeks ago). So we won't be able to do the evaluation or make a decision on which design to use for a few more weeks.

    😞 oh, we have to find better ways…. technology is advancing so fast



  • Any progress on this front?


  • administrators

    See my post today in the separate thread about the laser filament monitor.



  • @dc42:

    See my post today in the separate thread about the laser filament monitor.

    Yes, I just found it myself as well and tried to come here to edit my message but you beat me to it.

    Link here, for others:
    https://www.duet3d.com/forum/thread.php?id=3667&p=5


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