Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Channel Options	3, 4, 5, or 8 Channels
Operating Voltage	3.3V - 5V DC
Detection Type	Reflective Infrared
Output Signal	Digital TTL (High/Low)
PCB Dimensions	Varies by channel count (approx. 40mm x 12mm per 4 channels)
Adjustable Sensitivity	Yes, via onboard potentiometer
Indicator LEDs	Power and Signal Output indicators
Mounting Holes	3mm diameter for easy installation
Compatible Platforms	Arduino, Raspberry Pi, STM32, ESP32
Application	Line following robots, obstacle avoidance, smart car projects

6 reviews

Anonymous

Mar 30, 2026

Rating: 4/5

Solid performance

Response time is quick enough for high-speed line tracking. Just ensure your power supply is stable, as voltage drops can affect the IR emitter intensity.

Anonymous

Mar 29, 2026

Rating: 5/5

Exceeded expectations

I was worried about ambient light interference, but the shielding on these sensors is excellent. Works great even under bright office lighting.

Anonymous

Mar 25, 2026

Rating: 5/5

Easy to use for beginners

Bought this for my son's science project. The wiring is straightforward, and it connected easily to our microcontroller. The LED indicators make debugging very simple.

Anonymous

Mar 22, 2026

Rating: 5/5

Perfect for my Arduino robot

The 8-channel module works flawlessly with my custom line-following robot. The sensitivity adjustment is very precise, allowing it to track black tape on white floors without issues.

Anonymous

Mar 19, 2026

Rating: 5/5

Reliable for classroom kits

We purchased ten of these for our robotics workshop. They are durable and handle frequent reprogramming well. The 4-channel version is the sweet spot for most beginner tracks.

Anonymous

Mar 13, 2026

Rating: 4/5

Good value but needs calibration

Great sensor for the price. It took a little time to calibrate the potentiometers for each channel, but once set, it performs consistently. Documentation could be slightly better.

5 FAQ

Q: How do I distinguish between the 4-channel and 8-channel versions physically?

A: The 8-channel board is approximately twice the length of the 4-channel board. The product title and packaging clearly label the channel count before shipping.

Q: Can this sensor detect lines on a glossy surface?

A: Yes, but you may need to adjust the sensitivity potentiometer carefully to avoid reflections causing false readings. Testing on your specific surface is recommended.

Q: Is this compatible with 3.3V logic boards like ESP32?

A: Yes, the module operates on a 3.3V to 5V range and outputs TTL signals compatible with both 3.3V and 5V microcontrollers.

Q: What is the maximum speed a robot can travel while using this sensor?

A: The sensor response time is in microseconds, so it supports high speeds. The actual limit depends on your microcontroller's processing speed and code efficiency.

Q: Does the package include connecting wires?

A: The module typically comes with header pins soldered or unsoldered depending on the option selected, but jumper wires are usually sold separately.

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