Looking for Ldr Sensor? LDR sensor (make in India) is available at Zbotic with fast shipping across India.
Product Description
The Digital LDR Module is used to detect the presence of light / measuring the intensity of light. The output of the module goes high in the presence of light and it becomes low in the absence of light. The sensitivity of signal detection can be adjusted using the potentiometer.
Use it to detect the light brightness in your environment and decide to switch OFF or ON light? Or maybe to adjust the brightness of the LED of your house?
You can adjust the threshold (sensitivity) of the digital output by tuning the onboard variable resistor (potentiometer). Simple usage as it is the digital output, so you will know is the light present and decide what to do with it.
It comes with an M3 mounting hole for ease of attaching it to an object. Onboard, it provides an LDR, high sensitivity and commonly being used for light detection. The module comes with a power LED and a status LED as an indicator.
LDR Module Photosensitive resistor module most sensitive to environmental light intensity is generally used to detect the ambient brightness and light intensity.
How it works
1. Module light conditions or light intensity reach the set threshold, DO port output high when the external ambient light intensity exceeds a set threshold, the module D0 output low;
2. Digital output D0 directly connected to the MCU, and detect high or low TTL, thereby detecting ambient light intensity changes;
3. Digital output module DO can directly drive the relay module, which can be composed of a photoelectric switch.
Pin details
VCC ↔ 3.3V to 5V DC.
GND ↔ Ground.
DO ↔ Digital Output.
Features
- LM393 based design.
- It can detect ambient brightness and light intensity.
- Adjustable sensitivity (via blue digital potentiometer adjustment).
- Output Digital – 0V to 5V, Adjustable trigger level from preset.
- LEDs indicating output and power.
Package Includes
- 1 x LDR Module.
LDR sensor Overview
The LDR sensor (make in India) is an LM393-based light detection module designed to sense ambient brightness and light intensity. It provides a digital output that switches state when the light level crosses an adjustable threshold, making it ideal for automated lighting and monitoring projects.
Key Features of LDR sensor
- LM393 comparator design for reliable light detection
- Detects ambient brightness and light intensity
- Adjustable sensitivity via onboard blue potentiometer
- Digital output (0V to 5V) with user-defined trigger level
- LED indicators for power status and output state
- Operating voltage: 3.3V to 5V DC; operating current: 15 mA
- Genuine product with fast shipping from Zbotic
Applications and Use Cases
- Automatic switching of streetlights or corridor lighting
- Ambient light monitoring in greenhouses and plant nurseries
- Light-triggered alarms and security systems
- Dynamic brightness control for LED displays and signage
- Power-saving light management in smart homes
- Interactive art installations responding to light changes
How to Use LDR sensor
Connect the module’s VCC pin to 3.3–5 V, GND to ground and the digital OUT pin to your microcontroller or logic input. Power on the module and adjust the onboard blue potentiometer until the output LED toggles at your desired light threshold. Use the digital output state (HIGH or LOW) to drive relays, LEDs or microcontroller interrupts based on ambient light.
Why Buy from Zbotic?
- Genuine Products: All items sourced from authorized distributors
- Fast Shipping: Orders ship within 24 hours with tracking (non backordered products)
- Free Shipping: Free delivery on qualifying orders
- COD Available: Cash on Delivery, UPI, cards, net banking
- Technical Support: Expert help for setup and troubleshooting
- Easy Returns: Hassle-free replacement for defective products
Frequently Asked Questions
What voltage range does the LDR sensor module support?
This LDR sensor operates between 3.3 V and 5 V DC and draws approximately 15 mA during normal operation. It is compatible with both 3.3 V and 5 V microcontroller platforms.
How do I adjust the light sensitivity threshold?
Use the onboard blue digital potentiometer. Turn it clockwise or counterclockwise until the output LED switches on or off at the desired ambient light level. Monitor the module’s digital output to confirm your setting.
Can I interface this module directly with an Arduino?
Yes. Simply connect VCC to the Arduino’s 5 V pin, GND to ground and the OUT pin to any digital input pin. Read the pin state in your sketch to detect light or darkness and trigger actions accordingly.
Color Sensor TCS34725: Detect RGB and Hex Values with Arduino
The TCS34725 color sensor is one of the most popular light-to-digital converters for Arduino projects. It senses red,...
Read More →
Vibration Sensor SW-420 & Piezo: Tutorial for Arduino Projects
Vibration sensing is a core capability in modern electronics — from earthquake detection and industrial machine health monitoring...
Read More →
Current Transformer CT Sensor: AC Power Measurement DIY
Monitoring electricity consumption at home or in your workshop is one of the most practical electronics projects you...
Read More →Technical Specifications
| SKU | AI2141 |
|---|---|
| Weight | 0.05 kg |
| Availability | In Stock |
Applications & Use Cases
The LDR sensor (make in India) is a versatile lidar sensor used across a wide range of applications including robot navigation, obstacle detection, indoor mapping, autonomous vehicles, and distance measurement.
Common use cases:
- Adding obstacle avoidance to a mobile robot
- Building a 2D/3D indoor map
- Measuring distances for surveying
This product is ideal for robotics developers, autonomous vehicle engineers, and surveying professionals.
Technical Tip: LiDAR sensors use laser pulses to measure distance. Check scan rate (Hz), range (meters), and angular resolution for your application.
Shipping & Delivery
- Free shipping on orders above ₹999 across India
- Dispatched within 1-3 business days
- Expected delivery: 3-7 business days depending on location
- Secure packaging to ensure safe transit of electronic components
Hitesh Menon (verified owner) –
Great LDR sensor. Using it in my smart agriculture system. Reliable measurements every time.
Arnav Trivedi (verified owner) –
Bought this LDR sensor for my college project. Accurate readings, easy to code. Very happy!
Aryan Khurana (verified owner) –
Perfect LDR sensor for my automation project. Integrates seamlessly with my microcontroller.
Lakshya Ghosh (verified owner) –
Bought this LDR sensor for my college project. Accurate readings, easy to code. Very happy!
Dev Vohra (verified owner) –
Great LDR sensor. Using it in my smart agriculture system. Reliable measurements every time.
Lakshya Luthra –
This LDR sensor is a must-have for sensor projects. Plug and play with Arduino.
Sandhya Desai (verified owner) –
Great LDR sensor. Using it in my smart agriculture system. Reliable measurements every time.
Ankur Yadav (verified owner) –
Very satisfied with this LDR sensor. Library support is good and it’s easy to interface.
Neeraj Thakur (verified owner) –
Nice LDR sensor. Readings are mostly accurate. Good enough for my hobby project.
Rishabh Nayak (verified owner) –
Nice LDR sensor. Readings are mostly accurate. Good enough for my hobby project.
Aisha Deshpande (verified owner) –
This LDR sensor works great with Arduino. Easy to wire up and code.
Gauri Khanna (verified owner) –
Love this LDR sensor. Response time is fast and readings are stable.
Tanvi Batra (verified owner) –
Great quality LDR sensor. Calibrated it easily and the accuracy is impressive.
Zubin Bose (verified owner) –
Perfect LDR sensor for my automation project. Integrates seamlessly with my microcontroller.
Eshan Arora (verified owner) –
Outstanding accuracy from this LDR sensor. Compared with a professional instrument, readings match closely.
Rahul Dubey (verified owner) –
Superb LDR sensor! Using it in my environmental monitoring system. Very reliable data.
Isha Chatterjee –
Bought this LDR sensor for my college project. Accurate readings, easy to code. Very happy!
Lalit Panchal (verified owner) –
Superb LDR sensor! Using it in my environmental monitoring system. Very reliable data.
Kunal Nayak (verified owner) –
Nice LDR sensor. Readings are mostly accurate. Good enough for my hobby project.
Paras Trivedi (verified owner) –
Decent LDR sensor for the price. Requires proper wiring but works well once set up.
Prateek Dubey (verified owner) –
Great quality LDR sensor. Calibrated it easily and the accuracy is impressive.
Himanshu Verma (verified owner) –
Excellent sensitivity and range on this LDR sensor. Works better than I expected.
Sanjay Khanna (verified owner) –
Perfect LDR sensor for my automation project. Integrates seamlessly with my microcontroller.
Aditi Bose –
Excellent LDR sensor! Readings are accurate and consistent. Perfect for my project.
Vansh Banerjee (verified owner) –
Great quality LDR sensor. Calibrated it easily and the accuracy is impressive.
Manoj Singh –
Great LDR sensor. Using it in my smart agriculture system. Reliable measurements every time.
Gauri Mishra (verified owner) –
Decent LDR sensor for the price. Requires proper wiring but works well once set up.
Mukesh Ghosh –
Outstanding accuracy from this LDR sensor. Compared with a professional instrument, readings match closely.
Milan Sen (verified owner) –
Excellent sensitivity and range on this LDR sensor. Works better than I expected.
Anjali Kumar –
Outstanding accuracy from this LDR sensor. Compared with a professional instrument, readings match closely.
Arun Saxena –
Okay LDR sensor. Had to add a capacitor to stabilize readings. Works now.
Akshat Bhandari (verified owner) –
Outstanding accuracy from this LDR sensor. Compared with a professional instrument, readings match closely.
Tarun Garg (verified owner) –
This LDR sensor is excellent for the price. My data logging project is working perfectly now.
Harsh Khanna (verified owner) –
Love this LDR sensor. Response time is fast and readings are stable.
Hardik Bajaj –
Great LDR sensor. Using it in my smart agriculture system. Reliable measurements every time.
Harsh Luthra –
Great LDR sensor. Using it in my smart agriculture system. Reliable measurements every time.
Naman Vyas (verified owner) –
Outstanding accuracy from this LDR sensor. Compared with a professional instrument, readings match closely.