Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Model Number | KY-018 Compatible |
| Operating Voltage | 3.3V - 5V DC |
| Interface Type | Analog Output (AO) |
| Sensing Element | Cadmium Sulfide Photoresistor |
| PCB Dimensions | 32mm x 14mm x 5mm |
| Mounting Hole Diameter | 3mm |
| Pin Configuration | 3-Pin Header (GND, VCC, OUT) |
| Response Time | < 30ms |
| Compatibility | Arduino, Raspberry Pi, ESP32 |
| Package Weight | 2.5 grams |
Anonymous
Mar 30, 2026
Rating: 5/5
Great for beginners
I am new to electronics and this module made it very easy to understand how light sensors work. Plenty of tutorials online work with this specific layout.
Anonymous
Mar 26, 2026
Rating: 5/5
Reliable replacement part
Needed a replacement for a broken KY-018 sensor and this fit the bill perfectly. Pinout matches standard modules. No issues with calibration.
Anonymous
Mar 18, 2026
Rating: 4/5
Good sensitivity, compact size
The sensor is very responsive to changes in light levels. It fits perfectly on my breadboard. Only giving 4 stars because the included pins were slightly bent, but easily fixed.
Anonymous
Mar 14, 2026
Rating: 4/5
Solid performance
Used this in a line-following robot prototype. It detects light gradients well. Would prefer if it came with a digital output option too, but analog works fine for my needs.
Anonymous
Mar 07, 2026
Rating: 5/5
Perfect for Arduino light projects
This module works exactly as described. I used it to build a simple night light controller with my Arduino Uno. The analog output is stable and easy to read. Great value for the price.
Anonymous
Mar 04, 2026
Rating: 5/5
Fast shipping, works great
Arrived quickly and was well packaged. Tested immediately upon arrival and the resistance changes smoothly with light exposure. Highly recommended for sensor kits.
Q: Is there a potentiometer on the board to adjust sensitivity?
A: This specific photoresistor module provides a raw analog output and does not include an onboard potentiometer for threshold adjustment like some digital modules do.
Q: Does this module come with male header pins pre-soldered?
A: No, the module typically comes without headers soldered to allow flexibility for breadboard use or custom wiring. You will need to solder them yourself.
Q: Can I connect this directly to a 5V Raspberry Pi GPIO?
A: While the module operates at 5V, the Raspberry Pi GPIO pins are 3.3V logic. You should use a voltage divider or level shifter for the output pin to avoid damaging the Pi.
Q: Is this compatible with the ESP8266 NodeMCU?
A: Yes, it is fully compatible. You can connect the VCC to 3.3V or VIN, GND to GND, and the AO pin to any available analog input pin on the NodeMCU.
Q: What is the maximum light intensity this can measure?
A: This is an analog sensor providing relative light levels rather than a specific Lux rating. It works best for distinguishing between dark, dim, and bright environments.
![[Dental Implant Chief Specialist] Implant Examination and Treatment Planning](https://www.gosteppe.com/cache/small/product/268856/legacy-main-c23225af0fb2c31bbd4f46a1.png)
[Dental Implant Chief Specialist] Implant Examination and Treatment Planning
$9.90
Wall-Mounted Toilet Storage Rack - No-Drill Bathroom Shelf Organizer for Above the Toilet
$26.07
New Wireless Car Vacuum Cleaner, High Suction Home Use, Compact Handheld Silent High-Power Vacuum
$114.00
Electric Watercolor Spray Pen Children Hand-painted Color Pa
$47.55
Cement-Specific Pigment Powder for DIY Crafts, Gypsum Dye for Creative Flower Pot Coloring
$3.83
9 Garrett iCover 270 Twin 5RX Restech 072.6S28 Turbocharger 20-Dragon 0TXD GT 37042
$6,755.00
Household Small Range Hood, Portable USB Desktop Fume Extractor for Living Room Hot Pot and BBQ Odor Removal, Mini Smoke Absorber
$41.00
Retainer Storage Box, Clear Case for Invisible Aligners with Mirror, Portable Orthodontic Appliance Carrier, Instagram Style
$13.40
Hairline Transplant | No-Shave Hair Transplant | 1-1500 Units Long Hair Planting for Natural Flow and Volume - Department Director Service
$25,800.00
Zhong Yao Xuan Shi Biao Small Regular Script Hard Pen Copybook, 1.8cm Column Width, Tear-Off Sheets for Precise Tracing – Source of Regular Script
$29.70
Chunfei Grocery Store Yun'an GR02 Gravel Bike Thru-Axle Disc Brake Lightweight Touring with Multiple Rack Mounts
$8,974.00
Anti-Tangle High-Strength Grade 100 Lifting Chain for Industrial Hoisting
$776.44
DIY Rose Essential Oil Handmade Soap Customization
$35.00
Adjustable Height Simple Storage Shelf - Wooden and Iron Bookcase, Steel-Wood Supermarket Display Rack
$256.00
DIY Handmade Soap Mold - Carnation Flower Rectangular Silicone Mold for Homemade Soap, Mother's Day Gift
$14.30
Fried Chicken Warmer Cabinet with Heat Lamp Small Single-Layer Insulated Box for Pies Youtiao Chestnuts and Roasted Sweet Potatoes Display Case
$500.00
Dried & Preserved Flower DIY Kit for Scented Candles – Ocean Style for Festivals, Team Building, and Workshops
$6.83
304 Stainless Steel Chain, Thickened Industrial Seamless Short/Long Link Chain for Lifting, Swing, or Dog Leash
$1.50
Large Bucket 502 Glue, Strong Instant Adhesive, Gold Material 502 Dry Glue for Leather, Metal, Furniture, and Plastic Bonding by Manufacturer
$1,893.00
Rectangular Plastic Vegetable Planter for Balcony - Durable Home Gardening Pot
$12.90
Chinese Painting Line Drawing Copybook, Gongbi Sketch Template, Large-Scale Tracing Album, Ancient Style Brush Control and Line Practice Book
$7.48
German Continental Tires 225/45R17 Run-Flat, 19-Inch Original Authentic with Full Tread Patterns
$380.00
Dynamic Sheet Music Simplified Notation Accompaniment for Electric Wind Instrument Saxophone Hulusi Ocarina Flute Bamboo Flute
$10.00
LL Industrial Lint-free Wiping Paper - Oil and Water Absorbent Non-woven Fabric (White/Blue Large Roll)
$185.82
Continental Quiet Used Car Tires 225/235/245/255/265-35/40/45/50 R17/18/19/20/21/22/23
$284.00
Negotiable Price: Siemens Load Cell 7mh4106-5ec11, Brand New Unused, Contact for Price Negotiation
$1,332.00
Premium Over-Toilet Storage Organizer, Wall-Mounted Bathroom Shelf, No Drilling Required, Multi-Function Toilet Rack
$31.76
Model 2000 Large Commercial Vegetable Cutter for Slicing, Dicing, and Cutting Leafy Greens and Kimchi
$11,000.00
Aromatherapy Candle Tool Set - Includes Igniter, Snuffer, Wick Trimmer, Flame Extinguisher Cover, and Rotating Carousel Ornament
$2.55
onlycook 304 Stainless Steel Kitchen Rack with Narrow Edge for Sink, Dishcloth Drainer, and Sponge Basket
$36.50
![[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)
