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How to install a microswitch filament sensor on mini?  

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Slamer
(@slamer)
Active Member
How to install a microswitch filament sensor on mini?

Hi all,

I have the mini and want to install a filament sensor. Unfortunately I was not smart enough to buy it along with the printer and shipping is nearly the same as the part itself.

I would like to install a simple microswitch style sensor which uses two wires. 

Typically these microswitches only need 2 of the three pins so I connected the two outer pins but the printer does not recognize this.

can the mini use a microswitch style? If so how do I wire it?

 

This topic was modified 3 months ago by Slamer
Posted : 04/08/2024 11:46 am
Slamer
(@slamer)
Active Member
Topic starter answered:
RE: How to install a microswitch filament sensor on mini?

Wondering if it supposed to use all three wires maybe?

I'm accustom to using these as endstops on CNCs which only need 2.

Hoping someone can confirm.

thank you.

Posted : 04/08/2024 1:17 pm
JoanTabb
(@joantabb)
Veteran Member Moderator
RE: How to install a microswitch filament sensor on mini?

the filament sensor has 5 volts, signal (OUT) and ground connections. 
the 'signal' changes from approximately 5 volts to approximately 0 volts when filament is present

search 
Prusa MK3S MK2.5S MINI MINI+Runout Filament Sensor UK
on Ebay

https://www.ebay.co.uk/itm/404997526075?itmmeta=01J4FDKFEKZ8JWZX94G852ESQH&hash=item5e4bbbd23b:g:xvwAAOSw1UtmUfYh&itmprp=enc%3AAQAJAAAA0NtMyTh69guP%2BZmDZBSoFVhrDcppg6Q3OEbDhguRM1AiU4TRUpAyiV4V83myvko%2FaFq9JHHjeB4LmxgqII1O1pP%2B1xB35KbogMcq9i3hBvbeHWr4%2F1NtnCcBo2G4NrwVsB4pQSLN8BG3LNFZCrip%2BoaJweeRHJAw9a%2BUkTOC0cbRSruZYXqvob5UC5evS0sjYxi0ED7ZaBAoQCEbyuF9N1dkC%2BvbuhqLhONjs0wlrX6Z2erdmCW%2F%2BMhNAnYQ5lGnpvw4QEvSIUou7yzKeKCs8Ag%3D%7Ctkp%3ABk9SR7z3ze2jZA&edge=0

and you should see the later red version... 

or if you just search prusa filament sensor, you can find the black version with magnets and ball bearing
regards Joan

I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK

Posted : 04/08/2024 7:30 pm
Slamer
(@slamer)
Active Member
Topic starter answered:
RE: How to install a microswitch filament sensor on mini?

That makes sense. Thanks for the links and info.

Posted : 05/08/2024 12:53 am
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