A servo controller


 
I could easily CNC mill it but I'm not sure what it would offer over what we are already doing. I was trying to think of a way to apply it to the inlet but the working area is a bit small on the BGE and you would probably have to actuate a curved linear slide that followed the contour of the kamado unless you milled a block that was flat on one end and fit into the sliding door guide on the other. You could then take a flat piece of aluminum to create an actuating shutter.
 
Love the all metal look, but I agree that there's better control via the bottom vent and there's no way to fan the coals from the top.

I also think that it wouldn't hold up well to harsh weather conditions.
 
Is it possible to use it on a bottom vent of a WSM? You could use a stainless steel bowl fan adapter to cover the entire vent and the damper mechanism.

-- Mache
 
IMHO the servo will struggle to operate the vent, if not initially then eventually. My vents always seem to gum up a bit and become stiff, and the servo's we are using aren't really all that strong. I guess you could use a more powerful servo, but the little ones we use now already pull enough power to cause a problem with the standard power supply and can cause HM brown outs, so I would be reluctant to try and pull too much current through the servo. And then there is the heat issue, with the servo mounted directly to the vent/grill I assume it could get pretty hot at times... So as cool as it seems to automate the operation of the actual vents on your grill, there are a couple of hurdles you need to overcome before it would be reliable for the long term.
 
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