Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Sensor Type	Analog Grayscale Line Tracking
Interface	PH2.0 3-Pin Port
Compatibility	HelloSTEM & Standard Electronic Building Blocks
Operating Voltage	3.3V - 5V DC
Output Signal	Analog Voltage (0-1023)
Detection Range	0mm - 15mm from surface
LED Indicator	Yes, Power and Signal Status
Material	ABS Plastic Housing with PCB
Dimensions	24mm x 24mm x 12mm
Weight	8 grams

6 reviews

Anonymous

Mar 30, 2026

Rating: 5/5

Reliable and durable

My son has dropped his robot multiple times, and this sensor still works perfectly. The PH2.0 connector is secure and doesn't pop off easily during movement.

Anonymous

Mar 28, 2026

Rating: 4/5

Good value for money

Works as described. Documentation could be a bit more detailed for absolute beginners, but there are plenty of online tutorials that help.

Anonymous

Mar 21, 2026

Rating: 5/5

Standard component done right

If you are building with HelloSTEM blocks, this is a must-have. The form factor fits perfectly, and the analog readings are stable without much noise.

Anonymous

Mar 18, 2026

Rating: 4/5

Great educational tool

Bought this for my robotics club. Students found it easy to integrate into their projects. The only reason for 4 stars is that the cable could be slightly longer.

Anonymous

Mar 15, 2026

Rating: 5/5

Excellent sensitivity

The grayscale detection is very accurate. It can distinguish between dark gray tape and black lines easily when calibrated. Highly recommended for advanced projects.

Anonymous

Mar 08, 2026

Rating: 5/5

Perfect for line follower robots

This sensor works flawlessly with my HelloSTEM kit. The analog output allows for very smooth line tracking compared to digital sensors I've used before. Setup was instant.

5 FAQ

Q: Is this sensor compatible with Arduino boards?

A: Yes, since it uses a standard analog output and PH2.0 interface, you can easily connect it to an Arduino using a simple adapter cable.

Q: Does this work on carpeted surfaces?

A: Line tracking sensors generally work best on smooth, flat surfaces like tile, wood, or printed paper maps. Carpet textures may interfere with accurate line detection.

Q: Can I use multiple sensors on one robot?

A: Absolutely! You can connect multiple sensors to different analog input ports on your controller to create an array for more precise line following.

Q: Does the package include the connecting cable?

A: Yes, each sensor module comes with one PH2.0 connecting cable suitable for HelloSTEM building blocks.

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

A: The speed depends on your robot's processor and code efficiency, but most users achieve stable tracking at speeds up to 0.5 meters per second with proper PID tuning.

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