VDX Wrote:
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> ... instead of homing you could use some high-res
> encoding data on the disks, so after power up the
> actual absolute position can be read by rotating
> the disks until the nearest encoding raster is
> sensed ...
Even easier, especially if you want to go the reprap cheap way.
Use a potentiometer. Even one out of a hobby servo.
This will give you absolute encoding to any resolution you want without the need for encoded disks or optics.
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> ... instead of homing you could use some high-res
> encoding data on the disks, so after power up the
> actual absolute position can be read by rotating
> the disks until the nearest encoding raster is
> sensed ...
Even easier, especially if you want to go the reprap cheap way.
Use a potentiometer. Even one out of a hobby servo.
This will give you absolute encoding to any resolution you want without the need for encoded disks or optics.