How to set up motion-triggered smart lights as an Alexa routine 1. Choose your devices It's important to choose devices that will work with Alexa's routines. Routines are little mini-programs that control how smart devices behave. Motion sensor: As a motion sensor, I chose the H...
wire cutters, bolt cutters, shovels, sifters, a slim jim, a pocket knife, measuring tapes, orange marker flags, a flashlight, batteries, chalk, forceps, Vise-Grips, a compass, a magnet, a metal detector, distilled water, kneeling pads, and stuffed animals for living child victims. ...
Therefore, you don't need a tuner or batteries or anything else. The diode acts as a detector for the AM signal as described in the previous section. So, you can hear the station despite the lack of a tuner and an amplifier. However, adding an amplifier like that on the educational ki...
Thousands of girls went to work in the watch factory to do the painstaking painting by hand. To make a finer point on their brushes, the girls would lick them. Sometimes to break up the monotony, the girls would paint their teeth and lips and turn off the lights. Although managers ...
Smart lights: We’ve seen plenty of ways they can improve your home. But how do they work? Exactlyhowthey do what they do is still a mystery to some. Luckily we’re here to demystify the arcane. How do LEDs work? Light-emitting diodes are front and center for many of our digital ...
Your eye is the principal light detector for any telescope. For most amateur astronomers, this is the only detector that they will ever need. You might want to take photographs of what you see, however, and you can do that with conventional lens and film cameras or with CCD devices/digital...
If your motion sensor lights aren't turning on at the right time, they become useless to have. However, there's usually a quick solution. Choose which area you want the light to detect motion in. Next, hold the detector and tilt it slightly so you can aim it towards the area you cho...
But while faster-than-light travel isn't guaranteed impossible, we'd need to harness some pretty exotic physics to make it work. Luckily for sci-fi enthusiasts and theoretical physicists alike, there are lots of avenues to explore. All we have to do is figure out how to not move ourselves...
However, this could be a detriment to the fluorescent fixture’s life. Fluorescent lights do work well with motion sensors and dimmers. Plus, when you switch off/on these sensors, it actually decreases the light’s lifespan. So, you might want technology that enables frequent off/on switchin...
For about $100, you'll receive a smart WeMo switch and a motion detector. Plug the switch into an electrical outlet, and then plug a device, such as a lamp, heater or coffee pot into the switch. Pair the switch with your smartphone using Belkin's app, and then you can control the ...