Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:226440.
this x carriage has a magnetic probe mount modified from nopheads magnet probe
http://www.thingiverse.com/thing:7550
for almost automatic bed levelling that doesn't require a servo
so those of use with sanguinololu boards can have auto bed levelling with out the need to buy a ramps and a servo
auto bed levelling requires a atmega 1284 and a lcd control makes things better (likely not doable with out it )
this is still a work in progress as I haven't mounted the current version to my printer yet to test
edit mounted and tested tonight works quite nice
hope you guys can make good use of it
edit: added clamps for the belt sorry I forgot them
Edit: after a year of use the original is still mounted and working very nicely I would say likely the single best upgrade to my prusa has literally turned this machine into a reliable machine -insert sd card -pick file -lower probe -push the button -wait for print to complete
instead of the -level it -level it again -hope its ok -start print -stop print -level it -start again