Quote Originally Posted by MCOChuck View Post
Hi Everyone,

I'm really new to 3D printing and have very little experience when it comes to programing so apologies ahead of time.

The printer is a Mini Kossel with an optical z probe and Aurdrino Mega 2560/Ramps 1.4. When I try to compile the following Marlin firmware https://github.com/jcrocholl/Marlin there's the following error messages in Aurduino 1.0.6:
Marlin_main.cpp:1523:14: error: #error "You must have a Z_MIN endstop in order to enable Auto Bed Leveling feature!!! Z_MIN_PIN must point to a valid hardware pin."
...
I think Geoff got Auto Bed Leveling going on his Kossel. You could look at his thread on the topic:

http://3dprintboard.com/showthread.p...-Delta-Experts