# Configuration for Kossel k800 XL This example configuration is for a Kossel XL with a printable bed diameter of 280mm and a height of 380mm. It also has the auto bed leveling probe (with an endstop switch) and the heated bed activated. ## Configuration You might need (or want) to edit at least the following settings in `Configuration.h`: * `MANUAL_Z_HOME_POS` - The available height of your printing space. Auto Bed Leveling makes it less important to have the exact value. * `DELTA_PRINTABLE_RADIUS` - The printable radius is how far from the center the nozzle can reach. * `DEFAULT_AXIS_STEPS_PER_UNIT` - Steps-per-millimeter for the delta steppers, and for the extruder [to optimize the amount of filament flow](http://zennmaster.com/makingstuff/reprap-101-calibrating-your-extruder-part-1-e-steps). ### Fine tuning * Increase `DELTA_RADIUS` if the model comes out convex (with a bulge in the middle) * Increase `DELTA_DIAGONAL_ROD` if the model comes out larger than expected ### [http://reprap.org/wiki/PID_Tuning](PID Tuning) * `DEFAULT_Kp` - The proportional term * `DEFAULT_Ki` - The integral term * `DEFAULT_Kd` - The derivative term ### PSU Options * The power supply is configured to 2 (to use a relay to switch 12V on and off) * It is configured to be off by default