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Is there a reason Sailfish doesn't do PWM for things like the HBP (7.7 mentioned it doesn't so uses a kludge of 1bit that seems to work) and the Fan? I went digging to see why my printer's fan was always on at 100% or always off at 0% when my slicer was sending the S command and it appears Sailfish, unlike Marlin, can't do it. The Mightyboard has the FET so it isn't a hardware issue.