D-Bot Y Optical Endstop

Remix D-Bot Y carriage adding optical end stop. My mechanical one made a terrible vibration.

I took the optical end stop from the above and joined it to the original D-bot Y end.
That was the only part I remixed.
The Cap and Y optical holder and from the original design as I did not need to change these.
I home my carriage at Y min not Max so I remixed for both methods of homing.
If you do use optical end stops please change this line in Marlin
#define Y_MIN_ENDSTOP_INVERTING false // s