Ender 3 - direct drive run out sensor

An Ender 3 and Ender 3 Pro filament runout sensor for people that have installed a direct drive conversion (I have the basaraba_innovations kit installed)


Additonal items needed:

Small amount of bowden tube to allow a smooth path for the filament + eliminates wear on the mount.
1 X mini roller switch, presses into mount (I bought this one : ebay : 253653306378)
2 X M3 bolts to mount the bracket to the spool holder
1 X M3 bolt to mount the switch mount to the bracket