LDR Module

Description

Light Dependent Resistor (LDR) Module is a component that is sensitive to light. When light falls upon it then the resistance changes. It is used to detect the presence of light therby measuring the intensity of light. Values of the resistance of the LDR may change rapidly as the light intensity increases and decreases. With such a wide variation in resistance, LDRs are easy to use and there are many circuits available around it. The output of the module goes high in the presence of light and it becomes low in the absence of light. The sensitivity of light detection can be adjusted using the provided potentiometer.

SPECIFICATIONS:

• Operating Voltage: 3.3V to 5V DC
• Operating Current: 15mA
• LEDs indicating output and power
• LM393 comparator based design for cleanly latched outputs
• Output Digital – 0V to 5V, Adjustable trigger level using the preset
• Output Analog – 0V to 5V based on light falling on the LDR