Editorial Note: Talk Android may contain affiliate links on some articles. If you make a purchase through these links, we will earn a commission at no extra cost to you. Learn more. Key switches might ...

This automatic door light switch circuit turns ON a lamp when a door is opened then turns it OFF when the door is opened again. The working principle of the light switch is quite simple. The bistables ...

Replacing every light in the house with a smart bulb can get pricey quickly. One easy way to add intelligence to a room’s lights is with a smart light switch. Once installed, you’ll be able to ...