3Drag / K8200 - Optical end stop for X, Y and Z axis

The end stops for the X, Y and Z axis in the 3Drag / Velleman K8200 printer are simple switches that may introduce noise to the controller board that may result in an unwanted shift between the plastic layers printed.

Here I present a simple set of components that can be used to replace the all switches by optical end stops. The pieces are designed to be used with the [Optical Endstop Light Control Limit Optical Switch for 3D Printers RAMPS 1.4](http://www.aliexpress.com/item/5pcs-lot-Optical