Should have very few insects inside a hot oven.  I'll also probably build
some hysteresis into the thing to ignore bugs or smoke for a short while
(many incompetent cooks like to burn their food just before pulling it out.
Blackened redfish?  Blackened cheese sandwich? )  but finally hit the panic
button if it persists.   I am mostly looking for the case where the oven is
unattended, the food is left for way too long, and we need an emergency
shutdown.

 Right now I am working on punching more current into my IR diode.   Looking
through my junk box trying to figure out what a low ESR capacitor looks
like.  I figure dumping current out of a low ESR capacitor using a low RDSon
FET should do the trick nicely.

May have to break down and order some today.  Junk box is running thin.

--Lawrence
>
> They are, but they are somewhat less sensitive to smoke than the
> radioactive types.
> The crossed path detection mechanism is correct, the fun is in screening
> out small reflective insects, without screening out the smoke :)
>

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