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 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 ...

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 ...

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.

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 ...