IR-Sensor IR Filament Sensor with Steel Ball, Magnets, Screws Kit for 3D Printer Prusa i3 mk2.5/mk3 to mk2.5s/mk3s Upgrade

My printer is a Mini+, didn't notice this is for the i3; but seems that the PCB is the same. Needed different bolts and a smaller magnet. Had to re-arrange the wires for the mini (swapping wires at both ends of the cable). Wires slightly fat for the Mini+ 3d printed parts, so reprinted with a slightly deeper wire groove in the filament sensor housing. The 3d printed lever wasn't quite opaque enough, perhaps this has brighter IR than the mini but a bit of copper sticky tape on the end sorted that.Only tested so far on a scope... now I just need to install it on the printer!Edit: Also works on the printer :-)

The media could not be loaded.  Very well packaged, quick delivery and came with all the contents as shown on the add. I bought this kit for my Prusa Bear Extruder and all the components fit as expected. There are no instructions but it's pretty straight forward if you are replacing old for new or fitting it to the Bear. I am yet to electrically test as I am waiting for more parts to arrive but so far so good! Thanks again.

We fitted this new sensor to our printer and it wouldn't work at all, went back through the handbook followed all the instructions and nothing. Luckily my boyfriend is an engineer and he studied electrics at uni so he took it upon himself to take it apart only to find that the wires were round the wrong way so he had to snip the ends, re-wire and re-solder it himself!! Works fine now at least!

The accompanying hardware doesn’t fit with the pursa design and you risk breaking your printed parts I’d advise to replace the square nuts with pursa spares or find other sources.