Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Pin Count | 4-Pin |
| Sensor Type | Photoresistor (LDR) |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switch Output (DO) & Analog Output (AO) |
| Comparator Chip | LM393 |
| Sensitivity Adjustment | Potentiometer included |
| PCB Size | 32mm x 14mm |
| Mounting Hole Diameter | 3mm |
| Compatibility | Arduino, Raspberry Pi, ESP32, STM32 |
| Application | Light detection, automatic street lights, camera exposure control |
Anonymous
Mar 30, 2026
Rating: 4/5
Solid component
Works as expected. The PCB layout is clean, and the soldering points are well-defined. Just make sure you don't exceed 5V input or you might damage the comparator.
Anonymous
Mar 29, 2026
Rating: 5/5
Perfect for Arduino projects
This sensor module works flawlessly with my Arduino Uno. The analog output gives smooth readings, and the digital threshold is easy to adjust with the onboard potentiometer. Great value for the price.
Anonymous
Mar 25, 2026
Rating: 5/5
Excellent precision
The ability to tune the sensitivity makes this module versatile for different lighting conditions. I've tested it in both direct sunlight and dim indoor lighting, and it performs well in both.
Anonymous
Mar 14, 2026
Rating: 5/5
Great for learning electronics
Bought a pack of these for my university robotics club. They are robust enough to handle beginner mistakes and provide consistent data for our line-following robots.
Anonymous
Mar 11, 2026
Rating: 4/5
Good sensitivity, clear instructions needed
The hardware quality is solid and the LM393 chip is reliable. I deducted one star because there were no printed instructions on how to wire the 4 pins, but a quick online search solved it.
Anonymous
Mar 09, 2026
Rating: 5/5
Reliable light detection
I used this to build an automatic night light system. It detects dusk perfectly and triggers the relay without any false positives. The response time is very fast.
Q: How do I adjust the sensitivity of the light detection?
A: There is a blue potentiometer on the board. Use a small screwdriver to rotate it clockwise or counter-clockwise while monitoring the output until the desired light threshold is achieved.
Q: Can I use this with a Raspberry Pi?
A: Yes, you can. Connect the VCC to 5V or 3.3V, GND to ground, and the DO or AO pin to a GPIO pin. Note that if using the Analog Output, you will need an external ADC since Raspberry Pi GPIOs are digital only.
Q: Does this module output analog or digital signals?
A: This module provides both! It has an Analog Output (AO) pin for continuous light intensity readings and a Digital Output (DO) pin that switches high/low based on your threshold setting.
Q: Is the photoresistor replaceable if it breaks?
A: Yes, the photoresistor is through-hole soldered, so it can be desoldered and replaced with a standard LDR component if necessary, though they are quite durable under normal use.
Q: What is the maximum voltage this sensor can handle?
A: The operating voltage range is 3.3V to 5V DC. Please do not connect it to voltages higher than 5V, as this may permanently damage the LM393 comparator chip.
Colored Pencils Colorful Oil-Based Colored Pencils Coloring Set
$12.81
Yoofun 30pcs/set Natural Plants Leaf Flower Wooden Stamp Set
$54.67
Garden Pest Control Granules - Broad-spectrum Insecticide and Fungicide for Soil-borne Pests and Diseases in Vegetable Plots
$10.80
UGREEN Cable Organizer - Silicone Wire Winder for Charging Cables, Headphones, and Ethernet Cords
$5.90
![[Deposit] Xingweimian Lolita 2025 Spring/Summer Rain Falling on Celadon Fishbone Elegant CL Original Formal Dress](https://www.gosteppe.com/cache/small/product/269584/legacy-main-b7d69fcd01bf0df79a1c8eb8.webp)
[Deposit] Xingweimian Lolita 2025 Spring/Summer Rain Falling on Celadon Fishbone Elegant CL Original Formal Dress
$1.00
Star Cat Creative Watercolor Fill-in Coloring Book for Kids - DIY Art and Craft Painting Set with Pigments
$15.30
Donghai Crystal Live Stream Exclusive Listing for Natural Crystals - Perfectionists Please Purchase with Caution
$1.00
![[Buy 2 Get 10% Off] Lanzhai Purple Iris Painted Felt Mat – Thickened, Moisture-Resistant, Non-Pilling for Calligraphy & Painting](https://www.gosteppe.com/cache/small/product/269581/legacy-main-603d11ff0e43b7741fb1dc38.webp)
[Buy 2 Get 10% Off] Lanzhai Purple Iris Painted Felt Mat – Thickened, Moisture-Resistant, Non-Pilling for Calligraphy & Painting
$6.63
Natural Crystal Morganite Pink Loose Beads - Single Round Beads for DIY Jewelry Making and Craft Accessories
$0.89
Mini Pencil Sharpener for Elementary Students - Small Manual Crank Sharpener for Kids' Pencils
$1.89
Bamboo Flute Bar Dynamic Sheet Music Book for Accompaniment, Sight-Reading, and Rhythm Practice
$221.00
Multi-Function Thickened Industrial Scouring Pad for Cleaning, Stainless Steel Brushing, Rust Removal, and Emery Cleaning
$7.80
Natural Light Yellow Azeztulite Loose Beads for DIY Jewelry Making and Craft Supplies
$2.00
Expanded Clay Pebbles for Gardening - Pot Bottom Layer, Surface Mulch, Soil-Free Hydroponics for Flowers, Succulents, Orchids - Breathable Planting Medium
$7.70
1/5 Pack Silicone Kitchen Utensils Set for Cooking Baking
$43.12
Aizaofang 6-Cavity Triple Flower Silicone Mold - DIY Handmade Soap Home Decor - Food-Grade Heat-Resistant Material
$12.70
Single-Leg Manganese Steel Lifting Hook with Wide Opening for Hoists and Cranes
$92.00
Hesdick HZL-32 Portable Stone Removal Hook, Multi-Function Groove Tool for Car Tire Debris Cleaning
$9.28
PC Bonding Sealing Waterproof UV1901 Guardrail Tube Adhesive Shadowless Glue UV Glue Electronic Glue
$859.00
Wan Dian Wu Xian Stackable Toy Accessories - Vol.3 Prosperous Era Series Blind Capsule Figures for Desktop Display
$29.00
In Stock Commercial Vegetable Chopper and Meat Mincer - Grinding Machine for Baozi Fillings, Chili Dumplings, and Sausage WTP Meat Paste Processing
$5,805.00
Industrial Lint-Free Cloth for Cleaning Lenses, Optical Instruments, and Phone Screens; Microfiber Dusting Wipes
$81.58
Electric Barrel Water Dispenser Pump Automatic Water Lifter for Mineral and Purified Water
$74.00
F01RB0WA23 Transmission Valve for Roewe DQCT280 Remanufactured
$324.00
Full Payment Pre-order Guzi Bear DMMD Dramatical Murder Badge Polaroid Set Merchandise
$29.00
Peach Wood Sheepskin Rattle and Clapper Brass Traditional Handmade Baby Teething Hand Drum Newborn Gift Box
$29.90
Pirelli Run-Flat Tires 235/245/255/265/275/285 40 45 50 55R19R20R21
$350.00
Protective Case Lid for Pelican Cases - Laptop Insert for Models 1510, 1560, and 1535
$254.00
Universal 5800 Super Glue for Plastic, Metal, Glass, and Wood, 10-Second Fast Curing
$2.01
White Noise Wood Chip Core Grid Scented Candle Wooden Core S-Type Brand Name Candle Container Soy Candle Core Wood
$1.50
![[Youxin Electronics] GP2Y0E03 Infrared Distance Sensor Module 4-50cm Range](https://www.gosteppe.com/cache/medium/product/74667/legacy-main-4da8cadc5fc82afe91b124e3.webp)
![[Trial Pack] Xianlang Complete Cat Treat Sticks Meal Packs Main Course Cans Freeze-Dried Cat Food Sample Snacks Gift Set](https://www.gosteppe.com/cache/medium/product/208273/legacy-main-9ec245ebf781f65a434ba854.webp)
