Reading the post below, getting the BLTouch seems to be easy(albeit pin27 adaptor board is still needed), however, how does one install a filament sensor?
https://www.reddit.com/r/ender3/comments/imogwp/427bltocuh_v31/
And how can one prevent from burning up the PCBA while installing BLTouch?
( https://all3dp.com/2/creality-silent-board-ender-3/ )
Some users have noticed that for installing a BLTouch, the ports used vary based on what firmware you’re using. Plugging the Z probe wires into the wrong ports (such as the Z-axis endstop rather than the specified Z probe port) has reportedly led to smoking on the board, despite the fuse. While the fuse is a nice added security feature, it clearly doesn’t prevent all issues, so this is something to be wary of as you upgrade your printer.
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