Recently, I exhausted my stock of common passive infrared (PIR) motion sensor modules and was looking for a new one to play with. I searched the web for a small type with self-contained electronics.

[Muris] is pumping out the home lighting hacks. He developed this motion sensing module as an add-on to the IR switch we saw last week. There’s some kind of fuse box above his entry door and its white ...

Unlike infrared optical sensors that use an LED transmitter and IR receiver, the PIR emits nothing. As its “passive” name suggests, it responds only to infrared energy radiated by the object being ...

This post shares the idea of an automatic ultrasonic yard guard that might keep pests out of your yard without poisons or traps. The automatic yard guard is a motion-sensor controlled device. Its ...

The LSM330 iNEMO inertial-module, from STMicroelectronics, is a miniature 6-axis sensor MEMS module with custom motion-recognition capabilities to shortcut the path to wearable sensor applications in ...