There are few things as frustrating when you’re trying to get some serious hacking done than intruders repeatedly showing up without permission. [All Parts Combined] has the solution for you, with a ...

Microwave Doppler sensors are used alongside pyroelectric infrared sensors as human presence sensors. They emit microwaves and detect moving objects from the burst signals (Doppler signals) reflected ...

Even with Amazon’s Echo Show devices running Linux in the form of the Android-derived FireOS, using them for non-Amazon ...

Most low-cost ultrasonic sensors only report distance in a single fixed direction. This project adds a servo to sweep the sensor across a 180° field, then reconstructs that sweep in real time into a ...