I have released version 1.09m of my fork of RepRapFirmware. See [
forums.reprap.org] for the full change list. Of particular interest to Fisher owners are these changes:
* Bug fix: after running auto calibration, the Z=0 height was sometimes slightly inaccurate.
* New feature: M579 is now implemented. This allows the X and Y dimensions of a print to be scaled, to compensate for small build errors.
Large delta printer [miscsolutions.wordpress.com], E3D tool changer, Robotdigg SCARA printer, Crane Quad and Ormerod
Disclosure: I design Duet electronics and work on RepRapFirmware, [duet3d.com].