I want to make an Arduino based device that detects mosquito to wasp size insects. It will be used to detect how many insects are attracted to a number of food odours / chemicals during a 24 hour period.
My first thought was to use a sensor that detects the touch of bugs moving around. Given the size of those bugs (except maybe for wasps), the sensor would have to be very very sensitive. Then I thought of using a low resolution camera. It would however require the Arduino to constantly compare a base picture to the current image to detect a bug. I don’t think an Arduino is up to that task. Currently I am thinking of using a photodiode or phototransistor. After some Googling, I think a phototransistor is the best choice as it is more sensitive than a photodiode.
What are your thoughts?