The circuit diagram is based around the use of the emblematic LM358 IC (IC1-A), worked here as an impact sensor with the help of a standard 27 mm piezo-ceramic element (PZ1). Advertisement Test the ...

This allows the sensor to still detect motion in the room while the rest of the circuit is hidden away. [via Reddit ] Posted in home hacks Tagged 555 , analog , christmas , discreet , forrest mims ...

The sensor does have some limits. It can only detect motion up to about 16.5 feet away. And while Philips will give you the option of reducing that — that is, only turning on lights when motion ...

As an example, [Circuit Valley] has an IKEA Vallhorn motion sensor for a teardown, it’s as you might expect, a passive infrared sensor (PIR) sensor coupled with a Zigbee interface.

However, the microwave motion sensor module -HB100- introduced here makes the task sweet and simple. HB100 miniature microwave motion sensor is an X-band, Bi-static doppler transceiver module. This ...