The problems are exacerbated in the suburbs, where bears dine on bird feeders and garbage cans, raccoons take up ... [dlf.myyta] built this motion-activated sentry gun to apply some watery ...

The owner of the Cybertruck is surprised the car’s Sentry Mode didn’t alert him ... much like opening a tin can. The ease at ...

It consists of two parts: The sentry gun itself and a sonar detection tower which can tell if you’ve successfully knocked down the pigs or not. He’s using an Arduino Mega at the heart of the ...