Skip to main content
Home / Computer Hardware, Monitors & Peripherals / 7-Channel Digital Line Tracking Sensor Robot Car 7-Channel Gray Scale Line Following Module Infrared Recognition

Attributes

Brand -
Category Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals
Origin -
Channel Count 7 Channels
Sensor Type Infrared Reflective
Output Signal Digital TTL Level
Operating Voltage 3.3V to 5V DC
Detection Distance 1mm to 25mm
PCB Dimensions 145mm x 19mm
Indicator LEDs 7 Power + 7 Signal LEDs
Comparator Chip LM393
Sensitivity Adjustment Multi-turn Potentiometer
Connector Pitch 2.54mm Pin Header

5 reviews

A

Anonymous

Mar 24, 2026

Rating: 3/5

Instructions lacking

Hardware is fine and works as expected, but the included documentation was sparse. Had to search online for wiring diagrams.

A

Anonymous

Feb 25, 2026

Rating: 5/5

Great for competitions

Used this for a university robotics contest. Very reliable tracking even on slightly worn tape lines. Highly recommend for students.

A

Anonymous

Feb 14, 2026

Rating: 5/5

Bulk order success

Bought 10 units for our workshop. All units tested and working perfectly. Consistent quality across the batch.

A

Anonymous

Feb 09, 2026

Rating: 4/5

Good sensitivity

Detects lines well but needs careful mounting height adjustment. Once set up correctly, it performs reliably. Good value for the price.

A

Anonymous

Feb 09, 2026

Rating: 5/5

Perfect for Arduino Bot

Works flawlessly with my Arduino Uno project. Calibration was easy using the onboard potentiometers. The 7 channels provide smooth line tracking.

5 FAQ

Q: Can I use this sensor outdoors?

A: Not recommended. Direct sunlight contains infrared light which can interfere with the sensor readings.

Q: What is the maximum speed it can track?

A: Tracking speed depends on your microcontroller processing speed, but typically it handles robots moving up to 1-2 meters per second.

Q: Does it work on white lines on a black floor?

A: Yes, the hardware detects contrast. You simply need to invert the logic in your code to handle white lines on black.

Q: Is this compatible with Raspberry Pi GPIO?

A: Yes, it works with 3.3V logic systems like Raspberry Pi. Ensure you connect the VCC to 3.3V pin.

Q: What type of jumper wires fit the headers?

A: Standard 2.54mm pitch female-to-female or female-to-male jumper wires fit perfectly on the pin headers.

Explore your interests

View More
All Categories
Best Seller (30)
New List (30)
Huirui 420AB Fast-Curing Silicone Adhesive - High-Strength Instant Glue for Bonding Silicone Metal Plastic and Velcro

Huirui 420AB Fast-Curing Silicone Adhesive - High-Strength Instant Glue for Bonding Silicone Metal Plastic and Velcro

$36.00

IGBT Module FP15R12KE3/FP25R12KE3/FS50R12KE3/FS75R12KE3

IGBT Module FP15R12KE3/FP25R12KE3/FS50R12KE3/FS75R12KE3

$250.00

3F UL Gear Ventilated Waterproof Dry Bag – Compressible Storage for Sleeping Bags, Clothes, and Swim Gear

3F UL Gear Ventilated Waterproof Dry Bag – Compressible Storage for Sleeping Bags, Clothes, and Swim Gear

$40.80

Martini 100% Cotton Watercolor Paper 200g/300g Thickened Art Sketch Paper 4K Drawing Paper

Martini 100% Cotton Watercolor Paper 200g/300g Thickened Art Sketch Paper 4K Drawing Paper

$12.00

Flameless Aromatherapy DIY Kit - Natural Crystal Diffuser Stones for Home Decor and Demagnetizing

Flameless Aromatherapy DIY Kit - Natural Crystal Diffuser Stones for Home Decor and Demagnetizing

$4.68

[Ali Health] Dental Implant Initial Consultation Package, Oral Cavity Filling, Crown, Denture, and Implant Assessment

[Ali Health] Dental Implant Initial Consultation Package, Oral Cavity Filling, Crown, Denture, and Implant Assessment

$7.90

3M Industrial Scouring Pad for Polishing, Cleaning, and Rust Removal - Bulk Factory Supply with Aluminum Oxide

3M Industrial Scouring Pad for Polishing, Cleaning, and Rust Removal - Bulk Factory Supply with Aluminum Oxide

$7.20

Bull Socket Storage Box - Multi-Outlet Power Strip with Cord, Home Multifunctional Desktop Cable Organizer, Power Junction Board

Bull Socket Storage Box - Multi-Outlet Power Strip with Cord, Home Multifunctional Desktop Cable Organizer, Power Junction Board

$85.90

Used Car Tires 80-90% New, Sizes 165/185/195/205/215/235/60/70/75 R13/R14/R15

Used Car Tires 80-90% New, Sizes 165/185/195/205/215/235/60/70/75 R13/R14/R15

$65.00

BBP Angular Contact Ball Bearings 7000 7001 7002 7003 7004 7005 7006-E-J

BBP Angular Contact Ball Bearings 7000 7001 7002 7003 7004 7005 7006-E-J

$14.08

Baby Rattle with Teether for 0-1 Year Olds; Ideal Gift for Children's Day

Baby Rattle with Teether for 0-1 Year Olds; Ideal Gift for Children's Day

$14.80

Meiyike Granular Sheep Manure Fertilizer, Fermented and Composted for Vegetables and Flowers, Home Potted Plants, Garden Soil Activator

Meiyike Granular Sheep Manure Fertilizer, Fermented and Composted for Vegetables and Flowers, Home Potted Plants, Garden Soil Activator

$37.54

Face Towel Storage Box Wall-Mounted Bathroom Tissue Holder

Face Towel Storage Box Wall-Mounted Bathroom Tissue Holder

$2.98

Baby Rattle Toy - Chewable Wooden Handheld Drum with Sheepskin, Traditional Newborn Toy for Boys and Girls

Baby Rattle Toy - Chewable Wooden Handheld Drum with Sheepskin, Traditional Newborn Toy for Boys and Girls

$13.00

Mineral Water Bucket Inverted Stand 6L Bottle Pump Dispenser Manual Pressure Water Extractor for Water Coolers

Mineral Water Bucket Inverted Stand 6L Bottle Pump Dispenser Manual Pressure Water Extractor for Water Coolers

$2.09

Marie's Sketch Blending Stumps & Makeup Sponges – Professional Art Supplies for Students

Marie's Sketch Blending Stumps & Makeup Sponges – Professional Art Supplies for Students

$6.06

Compact Home Range Hood, Portable USB Desktop Smoke Extractor for Hot Pot and BBQ Odor Removal

Compact Home Range Hood, Portable USB Desktop Smoke Extractor for Hot Pot and BBQ Odor Removal

$39.00

Wen Zhengming Small Regular Script: Three Versions of Thousand Character Classic, Two Versions of Red Cliff Ode, Close-Up Copying Cards, Wen Zhengming Calligraphy Model Book

Wen Zhengming Small Regular Script: Three Versions of Thousand Character Classic, Two Versions of Red Cliff Ode, Close-Up Copying Cards, Wen Zhengming Calligraphy Model Book

$10.00

Custom Name Stamp, Personalized Seal, Photo-Sensitive Signature Stamp

Custom Name Stamp, Personalized Seal, Photo-Sensitive Signature Stamp

$7.04

Variable Frequency Drive Accessory RMIO Flat Cable for ACS800

Variable Frequency Drive Accessory RMIO Flat Cable for ACS800

$120.00

Qimeng Island WAKUKU 'Start Cheating Now' Series Blind Box, Celebrity Style Plush Toy

Qimeng Island WAKUKU 'Start Cheating Now' Series Blind Box, Celebrity Style Plush Toy

$69.00

Orthodontic Invisible Aligner Case Retainer Storage Box Teeth Corrector Denture Compact Portable Cleaning Box

Orthodontic Invisible Aligner Case Retainer Storage Box Teeth Corrector Denture Compact Portable Cleaning Box

$12.30

Sentury 990 Silent Tire - Sizes 185/195/205/215/225/50/55/60/65 R16/R17/R18/R19

Sentury 990 Silent Tire - Sizes 185/195/205/215/225/50/55/60/65 R16/R17/R18/R19

$342.00

Adult Outdoor Rafting Gear – Large PVC Mesh Waterproof Dry Bag for Swimming and River Trekking

Adult Outdoor Rafting Gear – Large PVC Mesh Waterproof Dry Bag for Swimming and River Trekking

$7.26

Universal Reading Pen Storage Rack – Compatible with Xiao Ji Qiu Qiu, Tun Xiao Meng, Caterpillar, and JOJO Reading Pens

Universal Reading Pen Storage Rack – Compatible with Xiao Ji Qiu Qiu, Tun Xiao Meng, Caterpillar, and JOJO Reading Pens

$10.80

[Daimai Holds Micro-Needle Hair Transplant Patent] Micro-Needle Artistic Hairline Planting, 3000 Grafts for Hair Loss Treatment

[Daimai Holds Micro-Needle Hair Transplant Patent] Micro-Needle Artistic Hairline Planting, 3000 Grafts for Hair Loss Treatment

$71,950.00

PELICAN Air 1535 Lightweight Protective Case, Waterproof Photography Gear Carry-On Luggage with Free Shipping

PELICAN Air 1535 Lightweight Protective Case, Waterproof Photography Gear Carry-On Luggage with Free Shipping

$219.00

Beginner Calligraphy Set: Tian Yingzhang Ou Style Kaishu Copybook, Xuan Paper, and Red-Guided Practice Kit

Beginner Calligraphy Set: Tian Yingzhang Ou Style Kaishu Copybook, Xuan Paper, and Red-Guided Practice Kit

$9.90

Three-Phase AC Permanent Magnet Synchronous Motor 15KW 380V Variable Frequency

Three-Phase AC Permanent Magnet Synchronous Motor 15KW 380V Variable Frequency

$3,493.00

Genuine OEM Car Tires for Pickups, SUVs, and Vans - Sizes 145, 155, 165, 175, 185, 195 R12

Genuine OEM Car Tires for Pickups, SUVs, and Vans - Sizes 145, 155, 165, 175, 185, 195 R12

$60.00