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

WARNING: was not wired correctly. The white, signal wire was in the wrong location. Making the item useless until the wire was placed in the right location. Works great after fix was made.

At the end of the day this product works. My two big issues were that I was missing some long bolts(maybe I lost them). I was able to find them in the Prusa spare parts bag. The second was I used a black PETG. The sensor was not triggered by the PETG plastic flag. I ended up putting a small piece of metal duct tape on the PETG flag so the sensor would see it. Everything else worked like a dream. I am happy.

Was able to hook this up to my Duet board with ease. Works as it should, and fit an MK3S hotend.

Works great with my Prusa MK3s

I am building a Prusa i3 MK3S by self-sourcing (rather than buying prusas kits) just for the fun and experience of buying, and selectively upgrading as I go alone - however, the MK3S extruder has a specific type of sensor and magnetic spring setup that would be prohibitive to try and piece-meal if it wasnt for this kit. Its absolutely perfect, and on testing, does exactly what it should. Five star!

it was just as describe everything was in package and the instructions was very helpful .

Like the title. first it was intermittent. Then it didnt work and i powered it with a bench top power supply and it was dead. Amazon though, full refund, cant complain. Just going to pay double and get the prusa made one. Too bad, most others seem to have had really good results. Excited to a get a run out sensor working soon!

It seems to be a good replacement for the original sensor that came in the printer. I installed it and fixed the false filament out errors.

i have a am8 frame like the bear frame for prusa i am part hunting to make my anet as much a prusa mk3s as possible and this works i did have some firmware issues that i had to work out on my own like the #define FIL_RUNOUT_STATE HIGH norm is low by default its like the true/false for like everything else that why it took me 2day to find it while working on other things hope this help someone else so they dont waste time not printing

I have an orginal one from prusa as well. This one works the same no problems so far. Used up all my left spool filament just to test. Working as intended.