Скачать или смотреть What is LDR (Light Dependent Resistor) | Bangla Tutorial | Robotry Bangladesh

LDR (Light Dependent Resistor) Module is using a high-quality LM 393 voltage comparator. Easy to install using the sensitive type photosensitive resistance sensor the comparator output signal gives a clean and good waveform.
Driving ability is 15mA with the adjustable potentiometer, it can adjust the brightness of the light. Working voltage is 3.3V to 5V. Where output is a digital switch output. Since this module is sensitive to the light, usually used for detecting the ambient brightness and light intensity.

You can use this board digital output DO port drive relay module directly, and can also use as a photoelectric switch. The analog output A0 connects with ad module and it can get more precise light intensity value through the ad-converter.

Interface Pin :

VCC : +ve power supply.
GND : Ground.
D0 : Digital output signal.
A0 : Analog Output Signal.

Instructor: Debashis Dhar

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