Digital LDR Module – Light Sensor
Original price was: ₹50.00.₹35.00Current price is: ₹35.00.
You save (%)
Features:
✅ Simple to use, plug-and-play.
✅ Adjustable sensitivity using potentiometer.
✅ Low power consumption.
✅ Fast switching compared to analog readings.
✅ Useful in light detection, automatic street lights, daylight sensing, and DIY projects.
Applications:
🔹 Automatic night lamp.
🔹 Smart curtains that close when light is high.
🔹 Light intensity alarms.
🔹 Robotics line-following sensors (combined with reflective surfaces).
🔹 Security systems to detect sudden darkness (hand covering sensor).
Out of stock
What is a Digital LDR Module?
A Digital LDR Module is a light sensor module that uses an LDR (Light Dependent Resistor) along with a comparator circuit to provide a digital HIGH/LOW output based on light intensity.
Unlike analog LDR modules that give variable voltage output, digital LDR modules output either 0 (LOW) or 1 (HIGH) depending on whether the light level crosses a threshold.
Key Components:
- LDR: Detects light intensity.
- Comparator (LM393): Compares LDR voltage with a reference set using an onboard potentiometer.
- Potentiometer: Adjusts the sensitivity (light threshold).
- Indicator LED: Shows output state.
- Output Pin: Provides digital signal (0/1) for microcontroller input.
How it Works:
1. Light falls on the LDR → its resistance changes:
- Bright light → lower resistance → higher voltage at comparator input.
- Low light → higher resistance → lower voltage at comparator input.
2. Comparator compares this voltage with the reference set by the potentiometer.
3. Output:
- LOW (0): when light intensity is above the set threshold.
- HIGH (1): when light intensity is below the set threshold.
4. Connect to Arduino, ESP32, Raspberry Pi or any microcontroller to detect light/dark states for automation projects.
Typical Pinout:
- VCC: +5V (or 3.3V on some modules).
- GND: Ground.
- DO: Digital output (0/1 based on light level).
| Weight | 5 g |
|---|
Related products
NRF24L01 2.4 MHz RF Transceiver Module
Original price was: ₹250.00.₹99.00Current price is: ₹99.00.
You save (%)Add to cartSpecifications
- Low working voltage: 1.9 to 3.6 V
- I/O input voltage: 5V
- Wireless rate: 1 or 2 MBPS
- SPI interface rate: 0 to 8MBPS
- Transmission distance: 200 meters
- Dimensions: Width: 30 mm, Height: 10 mm, Depth: 20 mm
- Weight: 30 g
Arduino Portenta X8 – ABX00049
Original price was: ₹22,300.00.₹15,400.00Current price is: ₹15,400.00.
You save (%)Read moreFeatures
- Combines Linux and real-time cores for flexibility and performance
- NXP® i.MX 8M Mini Cortex®-A53 quad-core + M7 real-time processor
- 4GB LPDDR4 RAM, 16GB eMMC storage
- Wi-Fi and Bluetooth 5.0 connectivity
- USB-C programming and power port
- Industrial-grade reliability and security features
- Supports Edge AI and machine learning applications
4×4 Matrix Keypad Membrane Switch for Arduino
Original price was: ₹99.00.₹49.00Current price is: ₹49.00.
You save (%)Add to cartFeatures:
- 16 buttons in a 4×4 matrix layout for alphanumeric or numeric input.
- 8-pin interface using 4 rows + 4 columns — minimal microcontroller I/O usage.
- Compatible with Arduino, Raspberry Pi, ESP32 and more — easy to read with libraries like Keypad.
- Thin, flexible membrane design with adhesive backing for easy mounting.
- Durable with millions of presses life-span for reliable long-term use.
- Ideal for password systems, menus, control panels & DIY projects.
Arduino Opta WiFi AFX00002 – Industrial IoT PLC | Arduino Pro
Original price was: ₹20,600.00.₹19,800.00Current price is: ₹19,800.00.
You save (%)Add to cartKey Features:
- Powerful MCU: STM32H747XI dual‑core Cortex‑M7 (480 MHz) + M4 (240 MHz)
- Versatile connectivity: 10/100 Ethernet, USB‑C, Wi‑Fi (802.11 b/g/n up to 65 Mbps), Bluetooth Low Energy, RS‑485 serial.
- I/O and switching: 8 configurable digital/analog inputs (0–10 V), and 4 relay outputs (10 A, 250 VAC).
- Secure and future‑proof: Onboard ATECC608B secure element, X.509 compliance, OTA firmware updates.
- Programming flexibility: Supports Arduino IDE sketches and IEC 61131‑3 languages (Ladder, FBD, ST, SFC, IL) via Arduino PLC IDE.
- Industrial-grade ruggedness: DIN-rail mount, IP20 rating, wide operating temperature (−20 °C to +50 °C), multiple certifications (CE, ENEC, UL)
