Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switching Output (0 and 1) |
| Sensor Type | Photoresistor (LDR) |
| Comparator Chip | LM393 |
| Detection Range | Visible Light Spectrum |
| Sensitivity Adjustment | Via Onboard Potentiometer |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Diameter | 3mm |
| Interface Compatibility | Arduino, Raspberry Pi, STM32 |
| Package Contents | 1x Sensor Module, 1x Pin Header |
Anonymous
Mar 26, 2026
Rating: 4/5
Good value, clear instructions needed
The hardware quality is solid and the response time is fast. I deducted one star because it doesn't come with a printed guide, but there are plenty of tutorials online for this specific LM393 setup.
Anonymous
Mar 20, 2026
Rating: 5/5
Bought 10 for our student workshop
We used these for a line-following robot variation that reacts to light sources. All units performed consistently. The digital output makes it very easy for beginners to integrate without complex analog coding.
Anonymous
Mar 18, 2026
Rating: 5/5
Compact and reliable
Small form factor fits perfectly in my enclosed weather station case. It has been running outdoors (protected from rain) for two weeks with no drift in performance.
Anonymous
Mar 17, 2026
Rating: 4/5
Works well once calibrated
Took me a while to understand how to tune the potentiometer correctly, but once I did, the switching action is crisp. Great for learning about comparators.
Anonymous
Mar 09, 2026
Rating: 5/5
Perfect for my smart lamp project
This module works exactly as described. The sensitivity adjustment is very precise, allowing me to set the exact light threshold for my Arduino-based night light. Setup took less than 10 minutes.
Anonymous
Mar 08, 2026
Rating: 5/5
Standard reliable component
If you need a basic light detection switch, this is the industry standard module. Low power consumption and stable output. Highly recommended for prototyping.
Q: Can I connect this directly to a 5V Raspberry Pi GPIO?
A: Yes, the module operates on 3.3V to 5V. When powered by 5V, the digital output is compatible with Raspberry Pi GPIO pins. Just ensure you share a common ground between the Pi and the module.
Q: Does this module provide an analog output or only digital?
A: This specific model provides a digital switching output (High/Low) via the LM393 comparator. However, many versions of this board also expose the raw analog signal on a separate pin if you need variable light intensity data.
Q: What is the maximum current this sensor can handle?
A: The sensor itself draws very little current (typically under 10mA). The output pin can source/sink up to 20mA, which is sufficient to drive a small LED or a logic input, but not a high-power relay directly.
Q: Do you ship with the pin headers pre-soldered?
A: No, to prevent damage during shipping and to give you flexibility in mounting, the pin headers are included in the bag but are not pre-soldered to the PCB. You will need to solder them yourself.
Q: Is the potentiometer sensitive enough for indoor lighting changes?
A: Absolutely. The onboard trimmer pot allows for fine-tuning. You can easily distinguish between a dark room, typical office lighting, and direct sunlight by adjusting the screw.
UHT Ultra-High Temperature Sterilizer, Room-Temperature Set Yogurt Production Line, Yogurt Processing Equipment, Stirred Yogurt System
$80,640.00
Professional Sketch Blending Kit for Art Students: Gray Tone Pencils, Sponges, Stumps, and Erasers
$4.17
Custom Solid Wood Signboard with Engraved Lettering, Advertising Carved Plaque for Homestays, Tea Rooms, Studios, Wooden Entrance Hanging Sign
$16.90
MOKO Stainless Steel Expandable Dish Drainer - Multi-Function Kitchen Sink Rack for Bowl and Plate Storage
$28.00
WoSporT Factory Direct WST Safety Case 32cm (12.6 inch) - Dustproof, Waterproof, and Impact-Resistant Tool Box
$95.00
South Korea DIO Dental Implant / Implant + Abutment + Crown
$1,580.00
40cm Extended Drill Attachment with Scouring Pad Head for Polishing, Rust Removal, and Marble Countertop Cleaning
$60.00
Authentic Ou Style Tian Kaishu Thousand Character Classic Calligraphy Card for Adult Practice, High-Definition Coated Paper
$55.10
Zer0g Ultra-Light 14g Backpack Waterproof Liner - Polycro Odor-Barrier Pack Liner for Hiking and Trekking
$21.20
Touchmark Liquid Acrylic Markers with Soft Tips, Specialized for Elementary School Art, Ideal Birthday Gift for Children
$18.90
Paper Blending Stump for Sketching - Professional Art Tool with Blade for Highlights, Pastels, and Oil Pastels
$3.74
Wen Zhengming Small Regular Script Love Lotus Essay Brush Tracing Practice Copybook Calligraphy Paper Copying Custom Wholesale for Beginners
$8.80
Heavy-duty Industrial Scouring Pad Roll with Aluminum Oxide for Stainless Steel Polishing and Rust Removal
$57.52
1.06m Leather Slitting Machine – Wide-Range Strip Cutter for Leather, Luggage, and Rubber Materials
$16,250.00
Ceramic Double-Boiler Steaming Bowl with Lid – Ideal for Eggs, Bird's Nest, Custard, and Soup for Home or Commercial Use
$21.11
![[Ya Que You Sheng] DT900 PRO X Calibration File V2 Version EQ Equalization](https://www.gosteppe.com/cache/small/product/269040/legacy-main-a3c0c55ffaafe89c05afced1.webp)
[Ya Que You Sheng] DT900 PRO X Calibration File V2 Version EQ Equalization
$15.00
Ceramic Rabbit Egg Holder, Creative Irregular Egg Stand, Home Breakfast Small Dish, Craft Gift Ornament
$44.78
Hot-Selling Wire Money Tree Bonsai Base – Ceramic Pot for Wealth Attraction Incense
$37.00
Maike Outdoor Sports Waterproof Backpack Wet-Dry Separation Ski Bag Fishing Creek Fins Multi-Function Gear Storage
$152.00
Viral NFC Chip Stickers for Music Wall - Adhesive Read/Write Tags for Song Scanning, Cards, and Photo Frames
$2.38
Rechargeable Generation 2 Personal Air Purifier - Safe Portable Electric Fan for Travel Commuting and Flights
$181.00
Integrated Sink Splash Guard with Silicone Drain Mat - Auto-Draining Countertop Organizer
$23.30
Ultra-Light Aluminum Camping Light Pole – Foldable Mini Lamp Stand for Outdoor Picnics and Tabletop Use
$8.33
bimoz Under-Desk Cable Organizer No-Drill Shelf for Home Office Socket Strip Router Wire Data Cable Fixer Minimalist Wire Winder Dual-Side Mount Ventilated Design
$40.80
Extended Deep-Cut External Thread Tool Holder with Relief Groove for Swiss-Type Lathe HKFF42R6001
$15.50
Meiao Dental Imported Dental Implant Package, Swiss ITI Straumann Implant Abutment, False Teeth, Filling, and Planting
$14,188.00
Assorted Colors Kids' Painting Crayons - Washable Oil Pastels in 12, 18, 24, or 36 Colors for Graffiti and Coloring
$2.47
Fruit and Vegetable Slicer - Stainless Steel Commercial Electric Multi-Function Shredder for Radish, Potato, Cucumber, Pepper, Automatic
$2,880.00
CAAS-Developed Granular Insecticide and Fungicide for Vegetable Gardens – Soil Pest Control and Fertilizer for Enhanced Vegetable Growth and Yield
$13.50
Marie's C6823 Sketch Blending Stumps (3-Pack), Professional Charcoal and Pastel Smudging Tools for Art Students and Beginners, Hard/Small/Highlight Set on Newsprint
$7.48
![[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)
