Hello i have realized a z-probe for my K8200 and it work perfectly.
So I share this achievement you ...
video of the system work : http://youtu.be/TMtnbstjYsw1x 80mmx3mm diameter axis
3x guide 3x5x9mm guide brass
5x m3x6 no head
1x servo Tower pro SG90
2x m3x10mm
2x m3x20mm
1x Endstop optical Switch
link to ebay parts :
rod 3mmx100 :
http://www.ebay.fr/sch/i.html?_odkw=servo+sg90&_from=R40&_osacat=0&_from=R40&_trksid=p2045573.m570.l1313.TR0.TRC0.H0.X3mmx100+rod&_nkw=3mmx100+rod&_sacat=0
servo :
http://www.ebay.fr/sch/i.html?_from=R40&_trksid=p2047675.m570.l1313.TR1.TRC0.A0.H0.Xservo+sg90&_nkw=servo+sg90&_sacat=0
endstop :
http://www.ebay.fr/itm/3D-Printer-Endstop-optical-Optical-Switch-Cable-Reprap-Mendel-Prusa-/261570458543?pt=Herramientas_el%C3%A9ctricas&var=&hash=item3ce6d073af
