Proximity Sensing LEDs from Diglinet Blog /

by stanleystar

Proximity Sensing LEDs from Diglinet Blog
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Proximity Sensing LEDs from Diglinet Blog

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    Project description | وصف المشروع

    How does it work? Each LED is grouped with an infrared (IR) LED and a photo-transistor. When a photo-transistors “sees” a certain wavelength of light, it is gated and turns on, allowing current to flow through it. I chose an IR LED that emits the same wavelength of light that the photo-transistor is configured to receive. As an object moves over the LEDs, the IR light coming from the IR LED reflects off of the object and back to the circuit. The photo-transistor receives the reflected IR light and turns on allowing current to flow through it to the blue LED turning it on. If you want to build one yourself, check out this Instructable ----------------->

    http://www.instructables.com/id/Motion-Sensing-LEDs/

    Published | نشرت

    4 months ago

    Category | الفئة

    Pictures  /  All | كل شىء  /  Breadboard

    Tags | الكلمات الرئيسية

    led leds breadboard photoresistor proximity sensor arduino

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