Y'know, with all this talk about optical sensors, keep this in mind: Cutting
grass is a dirty job.  If you are not careful, any optical sensor is going
to soon be covered in gook.  I nixed several ideas for optical grass height
gauging, concrete sensing, edge sensing etc. after watching the bits of
juicy stick grass flying all around a mower.   That's why I keep coming back
to my axiom - Cochroach Stupid! or Keep It Simple Stupid!  Cochroaches have
feelers that are more use than their eyes, if they even have eyes.


-- Lawrence Lile
Sr. Project Engineer
Salton inc. Toastmaster Div.
573-446-5661 Voice
573-446-5676 Fax

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