This is a webcam mount for the left side of the X axis on the Ender 3/Pro.

Instructions:

Remove the X axis endstop bracket from the printer

Be careful, the X axis stepper may fall once all 4 screws have been undone

Unplug the X axis endstop cable

Undo the 2 philips head screws that hold the endstop switch

Transfer the endstop into the new camera mount/X axis endstop bracket and screw in using the philips head screws

Be careful not to overtighten them, the plastic may crack

Redo the 4 screws to reattach the endstop bracket to the X axis gantry

Plug the cable back into the endstop

Place your camera on the arm and angle it to your liking!