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Home / Sensors / 3-Channel Line Following Module 5-Channel Line Following Sensor Photoelectric Infrared Sensor Smart Car Switch Board

Attributes

Brand -
Category Robotics / STEM Teaching Tools / Sensors
Origin -
Channel Count 3-Channel and 5-Channel Options
Sensor Type Photoelectric Infrared (IR)
Operating Voltage 3.3V - 5V DC
Detection Range 1mm - 25mm (Adjustable)
Output Signal Digital TTL Level
Potentiometer On-board Sensitivity Adjustment
Indicator LED Power and Detection Status
PCB Dimensions 42mm x 16mm (Approx.)
Mounting Holes 3mm Diameter for Easy Installation
Application Smart Car Line Following & Obstacle Avoidance

6 reviews

A

Anonymous

Mar 30, 2026

Rating: 5/5

Excellent for school projects

Bought this for a university robotics competition. The response time is fast, and the digital output makes interfacing with microcontrollers very simple. Great product!

A

Anonymous

Mar 30, 2026

Rating: 4/5

Solid hardware, standard library support

Hardware quality is good for the price. It works with most standard line-following libraries available online. The only downside is the short connector wires included.

A

Anonymous

Mar 21, 2026

Rating: 5/5

Easy to use for kids

My son used this for his science fair project. The instructions were clear enough that he could wire it up himself. The LED indicators are helpful for troubleshooting.

A

Anonymous

Mar 13, 2026

Rating: 5/5

Perfect for my Arduino robot car

This sensor module works flawlessly with my Arduino Uno project. The sensitivity adjustment potentiometer makes it very easy to calibrate for different track colors. Highly recommended for beginners.

A

Anonymous

Mar 08, 2026

Rating: 3/5

Works well in controlled lighting

The sensor performs well indoors under artificial light. However, I noticed some interference when testing it in direct sunlight. Make sure to shield it if using outdoors.

A

Anonymous

Mar 08, 2026

Rating: 4/5

Good value but needs careful calibration

The 5-channel version provides great resolution for line following. It took a little time to get the height and sensitivity just right, but once set up, it tracks lines smoothly.

5 FAQ

Q: Is this compatible with Raspberry Pi GPIO pins?

A: Absolutely. Since the output is digital TTL level, you can connect it directly to the GPIO pins of a Raspberry Pi. Just ensure you match the voltage levels (3.3V or 5V).

Q: Does the package include mounting screws?

A: The module comes with mounting holes sized for standard M3 screws, but screws are not included in the package. You will need to source those separately.

Q: What is the maximum speed the car can go while tracking?

A: The tracking speed depends on your motor setup and code optimization, but the sensor's response time is generally fast enough for speeds up to 1-2 meters per second in typical hobbyist applications.

Q: Can this sensor detect black lines on a white surface?

A: Yes, this infrared sensor is specifically designed to detect the contrast between black lines and white surfaces, which is standard for line-following robots.

Q: Can I use two of these sensors on one microcontroller?

A: Yes, you can use multiple sensors on one microcontroller. Just connect each sensor's output pin to a different digital input pin on your board and power them in parallel.

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