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 ...

Regarding the bipolar power supplies, the feeder power supply for this circuit was one I had previously built, ±12 V. As noted, the op amps were chosen because I had them on hand.

The outlet is wirelessly controllable (Zigbee, Wi-Fi, BTle) with motion detection, gas detection, temperature and humidity detection, power metering for both sockets independently, native over ...

A motion sensor activates the light when it detects something moving within its field of view. ... Turn off the power at the circuit breaker panel to the area you’ll be installing the light.

The motion-sensor module is an optical sensor that uses illuminating LEDs and ... which also contains the limit sensors, the drivers for the optical devices, and the circuits for the sensor module.

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 ...

The Iota home security system contains a 1080p security camera, a motion sensor, and a gateway. It can be connected to the internet via a wired Ethernet or Wi-Fi connection. Home monitoring from a ...

You probably wouldn't want to use it for all your electronics, but we're guessing that most folks could find a few uses for this new motion-sensor equipped HiSAVER power strip, which can ...

One of the biggest challenges for wireless sensor networks is that of power. Solar panels usually produce less power than you hoped, especially small ones, and designing super low power circuits ...

Power Outage Backup: ... The motion sensor measures 3.5 by 1.5 by 0.7 inches (HWD) ... before hitting the freelance circuit as a contributing editor. More From John R. Delaney.