Sometimes we need a non-contact liquid level sensor. There are several ways to build that, but the easiest is to try an optical liquid level sensor. You may already have an idea in mind since you are ...

The Lumen Maintenance Photocell (LMPC) is a sensor that’s attached to a wall that reads the amount of light in an area, and relays the information to a control unit that can make adjustments according ...

This Circuit can compare the Light level in an area. It uses a PN Photodiode as the light sensor and IC CA3140 as voltage comparator. The circuit is ideal as the front end of burglar alarm circuits.

This file type includes high-resolution graphics and schematics when applicable. The purpose of an ambient light sensor (ALS) is to allow electronic systems to “see” light like a human eye. The ...

We independently review everything we recommend. We may make money from the links on our site. Learn more› Advice, staff picks, mythbusting, and more. Let us help you. Published March 9, 2017 Grant ...

Some HP monitors and laptops, such as the EliteBook, feature an ambient light sensor. This sensor detects the light level of the environment and adjusts the screen's brightness accordingly. If you ...

The low coolant level warning light is an essential indicator on most modern vehicles' dashboards. It is an early warning system to alert drivers when the coolant level in the engine's cooling system ...

The built-in ambient light sensor in some Asus laptops detects the light level in an area and automatically adjusts the screen's brightness. But if you're giving a presentation or trying to conserve ...