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Installing a smart switch isn't the only way to smarten up your home's lighting. +21 more See all photos Smart switches versus smart bulbs and plugs Lutron, for example, has a compatibility tool you can use to find out which light bulbs (including recessed and can lights) are compatible with its switches. Smart devices and assistants aside, you'll also want to ensure that your smart switch is compatible with the lights you have installed - especially if they're LED lights. Try to find a switch that is compatible with those devices if you want to better integrate it with your smart home network. When shopping for a smart switch, keep in mind what kind of smart devices and assistants are already in your home or you may own down the road. Again, it's convenient, and there's also something that feels slightly futuristic about saying, "Hey Google, turn off all the lights" as you're walking out of the house. Most smart switches are compatible with Alexa, Google Assistant or Siri (or some combination of the three), enabling voice commands and further integration with your smart home.

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Plus, the ability to remotely flip a light switch on or off, or set it to a timer to do so automatically, can add a level of security to your home while you're away. I'm kidding a bit with the couch thing (though I've definitely been there), but the fact remains that controlling your light switches via an app on your phone or simply saying, "Alexa, turn on the lights" is convenient. Sure, you can walk over to a light switch and flip it on or off, or maybe adjust the dimmer setting, but what about when you're away? Or, even more importantly, when you're comfy on the couch and want to turn the lights down without standing up? Such situations, among others, are where a smart switch will come in handy. I get it: "Why would I need a smart version of something that's literally as simple as flipping a switch?" I can think of a few reasons, but it ultimately comes down to what justifies almost every smart home technology: convenience. They'll run you a bit more than standard switches and may require a bit of know-how to install, but you may find smart switches to be well worth the small trouble.

Smart switches are available online or at your local big-box hardware store and come in a variety of colors and configurations, including dimmer settings. In general, somewhere between 1k - 100k is usually good enough.There's a smart version of just about everything you can plug in, from TVs to refrigerators and even the plug itself, but what about the switches that control power to said devices and other fixtures in your home? You'll want a smart switch for that, of course. Higher value resistors are more sensitive to electrical noise than lower value ones, so with large amounts of electrical noise nearby (such as a running DC motor), you need lower value resistors. Resistor value is determined by the the electrical noise the project will be exposed to. The type of switch has absolutely no bearing on the size of the resistor. You obviously can still use them as small signal switches, they're just massively overqualified for the job.īut, normally, how would I have calculated what value resistor would have been right for this rocker switch? Big switches like that are designed to switch power, not just small microcontroller signals. It's specifying that the switch is capable of handling a 1/3 HP motor, in addition to its other limitations.

I assume horsepower doesn't fit in to this equation. I believe I know what the A (amps), V (volts) and VAC (volts alternating current?) stand for but I have no idea what the HP stands for. I see numbers like that on the side of the switch as well as things like 1/3HP and 125/250VAC. I can see that this rocker switch is rated up to 16A at 125V from the sales sheet. It's the electronics (hardware) side where I am still flying blind or with really dark and foggy sunglasses. My question therefore is how I plug this thing in to my project.