Unfortunately they dont have it in my local shop, and i need this urgent...by tonight
Actually, i'm looking for my runaway cat, and i think i found place where is she.
Only access to that place is through hole on glass doors about 25cm width.
I'm planning to put my laptop with modified IR webcamera inside, trigger on entrance, and make them send me email (and record short movie) when motion occurs. Problem is very very low light, so web camera does not see anything.
Solution one is to make IR reflector, but i'm not shure how much power i'll need to power it all night...
Second is to make circuit from first post, and power IR ore regular light only when cat passes through that hole.