When you need to quantify the color of an object, you’ve got quite a few options. You can throw a Raspberry Pi camera and OpenCV at the problem and approach it through software, or you can buy an ...

我们知道，一个动圈式的电磁扬声器，既可以播放声音，也可以作为麦克风来检测声音。同样，一个直流电机可以将电能转换成动能，也可以将动能转换成电能。那么一个LED是否也可以将光转化成电信号，进而可以当做光电传感器呢？ 为什么提出这个问题？

NEW DELHI: If you are fascinated by the LED sensor lights, then you must be tempted to use them in your home. But, before adopting this technology for your home, you need to gather up all the relevant ...

This circuit shows how to use an ordinary LED as a light sensor. It makes use of the photovoltaic voltage developed across the LED when it is exposed to light. LEDs are cheaper than photodiodes and ...

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Need a cheap and easy way to deter intruders? For homeowners, outdoor lighting is a game changer for providing a line of sight on potential trepassers without running up costly energy bills. If you're ...

IKEA is everywhere right now, especially after rolling out a huge lineup of 21 Matter-compatible gadgets at the start of last ...

This is a story about a successful system that nevertheless failed to make the cut. An experimental LED brightness adjustment is something [Mitxela] explored in a project for a high-precision clock; ...

While LEDs are common in voltage detection applications, I have never seen an LED circuit that is dedicated to indicating the presence of low values of current flow. This simple LED current sensor ...

Emulating human senses by electronic means has long been a grand challenge for artificial intelligence and is pivotal in the development of accessible and natural interfaces between man and machine ...

This post is brought to you in paid partnership with AUVON. They plug directly into your outlets, add a warm backlit glow, and automatically adjust to your environment so you’re not wasting energy or ...