KY-018 Photoresistor LDR Light Sensor Module | Robochacha Pakistan

Makers choose the KY-018 Photoresistor Module when they need their projects to react to the surrounding environment. Specifically, the module uses a cadmium sulfide (CdS) cell that changes resistance based on the light it receives. Therefore, in total darkness, the resistance is very high, but it drops significantly under bright light. As a result, you can use it as a simple optical switch or a precise light meter. Furthermore, the board includes a 10k fixed resistor to create a stable voltage divider circuit.

Additionally, this sensor is extremely easy to interface with any microcontroller. Consequently, you can read the light levels using a single analog pin. Because of this, the KY-018 Photoresistor Module remains a top choice for student projects, ranging from smart curtains to automated garden lights.

Key Features

• Dynamic Range: The sensor detects everything from deep shadows to direct sunlight. Specifically, its resistance varies from approximately 1M in the dark to 10k in bright light.

• Analog Output: It provides a continuous voltage signal proportional to light intensity. Therefore, you can program custom thresholds for different lighting conditions.

• Built-in Voltage Divider: This KY-018 Photoresistor Module comes pre-configured with a 10k resistor. As a result, you dont need to build extra circuits on your breadboard.

• Wide Voltage Range: It operates reliably between 3.3V and 5V. Consequently, it is fully compatible with Arduino, ESP32, and Raspberry Pi (with an ADC).

• Compact and Durable: In addition, the LDR is securely mounted on a high-quality PCB. Specifically, this protects the sensor legs from bending during frequent use in labs.

Technical Specifications