: Details on the slapping mechanism (solenoids, spring-loaded paddles, or rotating arms).
If you are looking for the technical "paperwork" or a project outline to build or document such a device, here is a standard structure for an engineering project report: Stupid Mosquito Smasher
: Use of microcontrollers like Arduino or simple motion sensors (PIR) to trigger the "smash." Stupid Mosquito Smasher