Description
Reviews
| Brand | - |
| Category | Robotics / STEM Teaching Tools / Sensors |
| Origin | - |
| Operating Voltage | 3.3V - 5V DC |
| Output Signal | Digital Switching Output (0 and 1) |
| Detection Distance | 1mm - 8mm (adjustable via potentiometer) |
| Comparator Chip | LM393 |
| PCB Dimensions | 32mm x 14mm |
| Mounting Hole Diameter | 3mm |
| Indicator LEDs | Power LED and Output Status LED |
| Sensitivity Adjustment | Blue Potentiometer |
| Compatible Platforms | Arduino, Raspberry Pi, STM32, ESP32 |
| Application | Line following robots, obstacle avoidance, counting modules |
Anonymous
Mar 25, 2026
Rating: 4/5
Good value but needs calibration
Great little module for the price. It took a bit of time to get the potentiometer adjusted correctly for ambient light conditions, but once set, it reliably detects the black line on white paper. Just ensure you have a stable 5V supply.
Anonymous
Mar 19, 2026
Rating: 5/5
Exceeded expectations
I was worried about the detection consistency, but these modules are surprisingly robust. The LM393 comparator provides a clean signal transition. I've been running my robot for hours without any missed lines.
Anonymous
Mar 13, 2026
Rating: 5/5
Perfect for my Arduino line follower
This sensor works exactly as described. The sensitivity adjustment is very responsive, allowing me to fine-tune the detection range for different surface colors. I used four of these for a line-following car project, and the response time is excellent.
Anonymous
Mar 09, 2026
Rating: 5/5
Compact and effective
The size is perfect for small robot chassis. The IR emission and reception are well-shielded to prevent cross-talk between adjacent sensors. Highly recommended for beginner robotics projects.
Anonymous
Mar 08, 2026
Rating: 4/5
Works well in controlled lighting
Performance is solid indoors. I noticed some interference when testing near bright windows due to sunlight containing IR, but adding a simple tube shield solved the issue. Overall, a great component for the cost.
Anonymous
Mar 05, 2026
Rating: 5/5
Reliable and easy to interface
We bought a bulk pack for our university lab. Students find them very easy to wire up to microcontrollers. The digital output makes coding straightforward without needing complex analog processing.
Q: Does this work on glass surfaces?
A: Infrared sensors generally struggle with transparent surfaces like glass because the IR light passes through rather than reflecting back. It is best used on opaque surfaces such as paper, wood, or plastic.
Q: What is the maximum current draw for one module?
A: Typically, a single module draws around 10mA to 20mA depending on the brightness of the IR LED, which is influenced by the voltage supply and ambient conditions. It is safe to power multiple units directly from an Arduino 5V pin.
Q: Is the output analog or digital?
A: The board provides a digital switching output (HIGH/LOW) via the LM393 comparator. However, if you need analog data, the raw signal is often accessible on specific breakout versions, but this standard module outputs digital signals only.
Q: Can this sensor detect objects other than lines, like walls?
A: Yes, while optimized for line tracking, it functions as a proximity sensor. It can detect obstacles within its 1-8mm range, making it suitable for basic obstacle avoidance if mounted facing forward.
Q: How do I adjust the sensitivity?
A: Locate the blue potentiometer on the PCB. Use a small screwdriver to rotate it clockwise to increase sensitivity (detects from further away) or counter-clockwise to decrease it. Test while moving the sensor over your target line to find the sweet spot.
Paper Blending Stump A1zdq001 - Large Art Sketch Highlighting Tool for Students
$4.15
Continental Run-Flat Tires 225 235 245 255 265/45 50 55R17R18R19R20R21R22
$350.00
3D Printing Pen for Children - 3D Stereoscopic Drawing Toy for Boys and Girls (Ages 6+)
$35.70
MOOCAT Loose-Leaf Refill – 300G Wood Pulp Fine-Texture Blank Paper for OC Binders A9/B5/M5/M6 Hand Drawing
$12.90
Lanzhai Calligraphy Wool Felt Mat – Mini Arm Rest and Inkstone Pad with Creative Chinese Style Design for Painting and Writing
$7.48
Qing Dynasty Calligrapher Lin Zexu Guangeti Small Regular Script: Buddha Speaks of the Infinite Life Sutra, Brush Tracing Practice Long Scroll Copybook
$8.80
Lightweight Ceramsite Bottom Padding, Professional Backfill for Sunken Bathroom Engineering and Construction, Large Granules
$30.10
![[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament](https://www.gosteppe.com/cache/small/product/269008/legacy-main-75745db0463ce5521fe5703d.webp)
[In Stock] MINISO YOYO Wind-Chasing Diary Series Aromatherapy Figure Blind Box – Youyou-chan Ornament
$49.00
Sanitary Juice Beverage Dairy Mixing Tank Food Pharmaceutical Electric Heating Emulsification Reaction Dissolution Tank
$4,122.00
Zhi Paper Calligraphy Copybook: Shen Du's Red Cliff Ode, Jingzhai Zhen, and Bu Zi Qi Shuo - Small Regular Script Cards for Tracing Practice
$17.00
Maike Outdoor Waterproof Dry Bag - Crossbody Travel Backpack for Rafting Diving and Beach Activities
$19.90
Oriental Pearl Dual Porcelain Jar Gift Set: Green Tea, Black Tea, Jin Jun Mei, and Pu'erh Loose Leaf Tea in Porcelain Jars
$140.41
Transparent Retainer Storage Case – Portable Soaking and Cleaning Box for Orthodontic Appliances and Dentures
$8.42
Original Wang Xizhi Huangting Small Regular Script Calligraphy Copybook for Soft/Hard Tip Pens Tear-Off Card Precise Tracing Kaishu Huan'e Tie
$35.70
Foldable Kitchen Sink Dish Drying Rack - Silicone Roll-Up Mat and Countertop Organizer
$25.40
Rapid Folding Shopping Cart, Small Trolley for Stairs, Lightweight Portable Home Handcart, Supermarket Pushcart and Vegetable Basket
$178.39
Over-Toilet Storage Rack - No-Drill Toilet Paper Holder with Multi-Compartment Shelves for Wet Wipes and Aromatherapy
$19.71
Stainless Steel Planter Pot - Outdoor Vegetable and Flower Growing Box for Balcony, Rooftop, Courtyard, Auto-Drainage, Customizable
$42.50
Stainless Steel Over-Toilet Storage Rack, Multi-Function Floor-Mounted or Wall-Mounted Multi-Tier Organizer for Bathroom, Toilet, and Laundry
$50.00
![[Chip 3.0 Upgraded Model] Senzhou TDS Water Quality Tester for Tap and Drinking Water Health Monitoring](https://www.gosteppe.com/cache/small/product/268996/legacy-main-32173fe50b846ac0e87ae26e.webp)
[Chip 3.0 Upgraded Model] Senzhou TDS Water Quality Tester for Tap and Drinking Water Health Monitoring
$22.90
Here and Now Pocket Calligraphy Copybook: Wen Zhengming Small Regular Script for Adult Beginners
$18.00
Southern Red Agate Loose Beads for DIY Crystal Jewelry Making, Round Bead Accessories and Materials
$1.10
3-Tier, 4-Tier, 5-Tier Double-Layer Drainage Rack, Water Bucket Stand, Floor-Standing Thickened Rack
$276.32
Multi-Layer Over-Toilet Storage Rack for Bathroom, Drill-Free Floor Stand for Washing Machine and Balcony Organization
$46.96
Thickened Industrial Scouring Pad Emery Stainless Steel Abrasive Cloth Pot Scrubber Rust Removal and Polishing Wheel
$7.28
Wall-Mounted Bathroom Toilet Paper Holder and Tissue Dispenser Rack
$49.00
Arches French Watercolor Paper 300g/640g/850g, Cold/Hot Press, 100% Cotton, Deckled Edge, 2K/4K/8K
$29.60
Wen Xin Tang Yan Zhenqing Duobao Pagoda Stele Calligraphy Copybook, Tang Regular Script, Adult Beginner Calligraphy Practice Cards
$49.30
![[Shenzhen Best Seller] Premium Wearable Negative Ion Air Purifier - Neck-Hanging Portable Electronic Mask](https://www.gosteppe.com/cache/small/product/268987/legacy-main-5f71c8070119587e6427efe9.webp)
[Shenzhen Best Seller] Premium Wearable Negative Ion Air Purifier - Neck-Hanging Portable Electronic Mask
$298.00
Teruisi Electric Fruit and Vegetable Slicer, Multifunctional Chopper for Cafeterias and Hotels, Cutter for Green Onions, Chili Peppers, Radishes, and Ginger
$3,798.00
![[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)
