Auto Bed Leveling Issue

Hey,

So I have just installed one of the PrintrBot sensors to auto bed level on my printer.

I have gone into Rich C's fork of Marlin for the Auto Bed Leveling features.

However, when i send either a G29 or a G30 command I always get -20 as the result. (See attachment)

The first set is a G29 and the latter results are from a G30 command.

Does anyone have any idea why it is all coming out as -20?

(Believe me, my bed is not that flat haha!)

Thanks

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FIXED!

Turns out if the error in the print bead from the firmware's 0 is greater than 20mm +/- it won't go any higher.

So I altered my firmware to take this into account and getting much nicer numbers now!

Edited 1 time(s). Last edit at 01/23/2015 09:16AM by ayouden.