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Prusa Mini IR Sensor  

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3Dprintedgr
(@3dprintedgr)
Estimable Member
Prusa Mini IR Sensor

Hello everyone,

I was wondering if someone has a picture of the IR sensor on the inside(without the lid cover on). Seeing the PCB and the STL files I cannot understand how the board is seated inside the 3d printed part. I think I am missing something.

Thanks in advance.

Best Answer by Matteo Cristini:

I'm back with the pictures 🙂

The board is held with a little screw on the bottom of the sensor's case, and the connector is inside the case too:

 

When no filament is inserted, the two magnets keep the "arm thingy" down to trigger the sensor

And when some filament is present, the ball pushes down the arm so that the sensor isn't triggered anymore.

Original Prusa Mini + Smooth PEI
Prusa Slicer 2.2.0...
Posted : 10/04/2020 11:20 pm
Matteo Cristini
(@matteo-cristini)
Reputable Member
RE: Prusa Mini IR Sensor

I might take mine apart later to post some pictures, but if I won't be able to put it back together, I'm gonna blame you! 🤣 

Posted : 11/04/2020 8:59 am
Matteo Cristini
(@matteo-cristini)
Reputable Member
RE: Prusa Mini IR Sensor

I'm back with the pictures 🙂

The board is held with a little screw on the bottom of the sensor's case, and the connector is inside the case too:

 

When no filament is inserted, the two magnets keep the "arm thingy" down to trigger the sensor

And when some filament is present, the ball pushes down the arm so that the sensor isn't triggered anymore.

Posted : 11/04/2020 9:44 am
Matteo Cristini
(@matteo-cristini)
Reputable Member
RE: Prusa Mini IR Sensor

My sensor doesn't seem to work anymore 🙁

Posted : 11/04/2020 10:55 am
Matteo Cristini
(@matteo-cristini)
Reputable Member
RE: Prusa Mini IR Sensor
Posted by: @matteo-cristini

My sensor doesn't seem to work anymore 🙁

Found the issue, one of the screws was too tight and prevented the little arm inside from moving. Now the sensor works as expected.

Posted : 11/04/2020 11:32 am
3Dprintedgr
(@3dprintedgr)
Estimable Member
Topic starter answered:
RE: Prusa Mini IR Sensor
Posted by: @matteo-cristini
Posted by: @matteo-cristini

My sensor doesn't seem to work anymore 🙁

Found the issue, one of the screws was too tight and prevented the little arm inside from moving. Now the sensor works as expected.

Haha thank you for your self-surcifice 🤣 I am glad your sensor is fully functional.

Wow I truly had it wrong, I thought that the filament was passing through the sensor. But now I see that its mechanical.

Thank you so much. Your photos were really helpful

Original Prusa Mini + Smooth PEI
Prusa Slicer 2.2.0...
Posted : 11/04/2020 12:27 pm
Matteo Cristini
(@matteo-cristini)
Reputable Member
RE: Prusa Mini IR Sensor

@geoper2

You're welcome! It was actually quite interesting to see how it all worked. And now I know how to troubleshoot it if it stops working again!

Posted : 12/04/2020 6:34 pm
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