The file 'Autobed Leveling P802M 18mm Kapazitiv Sensor Arm 3D Printer Model' is (rar,stl) file type, size is 2.7MB.
Now there is a documentation with everything you need to update you firmware and enable Auto Bed Leveling(The Documentation is in German)
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I used This Sensor: http://www.ebay.de/itm/Kapazitiver-Naherungs-Schalter-18mm-PNP-NO-Schlieser-8mm-Schaltabstand-Sensor-/271986835946?hash=item3f53adc1ea
I Added with a Ocokopler(4N28) to use the 12V sensor in safe way with my Melzi Board.
Optokopler:
Bl BN BU--------GND
| |------------------12V
1K |--O O
|----------O4N28 O-----5V
O O-----GND From endstrop connektion
http://forums.reprap.org/read.php?336,388217 Here I found the Optocopler Jpeg
P802M_Marlin_Auto_Bed_Leveling.rar | 2.7MB | |
PI3_802_Kapazitiv_sensor_Holder.stl | 470.9KB |