Attributes

Brand	-
Category	Robotics / STEM Teaching Tools / Sensors
Origin	-
Operating Voltage	3.3V - 5V DC
Sensor Type	Reflective Optical (IR)
Output Signal	Digital (TTL Compatible)
Detection Range	0mm - 8mm (Adjustable)
PCB Dimensions	14mm x 9mm
Mounting Hole Diameter	2.5mm
Response Time	< 1ms
Current Consumption	Approx. 20mA at 5V
Interface Pins	VCC, GND, OUT
Application	Line Following, Object Detection

6 reviews

Anonymous

Mar 27, 2026

Rating: 3/5

Works well but sensitive to ambient light

The sensor works as described, but I found it struggles a bit under direct sunlight. If you are using this indoors or in a shaded robot chassis, it's perfect. Just be aware of the environment.

Anonymous

Mar 25, 2026

Rating: 5/5

Reliable and fast response

I've used expensive industrial sensors before, and while this isn't in that league, it is incredibly reliable for hobbyist speed requirements. The output switches cleanly without jitter.

Anonymous

Mar 15, 2026

Rating: 5/5

Great for university projects

Bought five of these for a final year project. They all performed identically. The 3.3V compatibility is a huge plus when working with newer microcontrollers like the ESP32.

Anonymous

Mar 14, 2026

Rating: 5/5

Perfect for line follower robots

This sensor works flawlessly with my Arduino Uno. The detection range is consistent, and it easily distinguishes between black tape and white paper. Highly recommended for beginner robotics projects.

Anonymous

Mar 13, 2026

Rating: 4/5

Good value, needs calibration

Solid build quality for the price. You do need to spend some time adjusting the potentiometer to get the sensitivity right for your specific lighting conditions, but once set, it stays stable.

Anonymous

Mar 02, 2026

Rating: 5/5

Compact and easy to mount

The small footprint makes it very easy to fit onto tight PCB designs. The mounting holes are standard size, making mechanical integration straightforward. Will buy again.

5 FAQ

Q: Can I use this with a Raspberry Pi GPIO?

A: Yes, since the module supports 3.3V operation, you can connect VCC to the 3.3V pin on your Raspberry Pi. The digital output is TTL compatible and safe for the Pi's GPIO pins.

Q: What is the maximum current this module draws?

A: Under typical operating conditions at 5V, the module draws approximately 20mA when the IR LED is active. Please ensure your microcontroller pin can source enough current if powering directly, though we recommend powering via the VCC rail.

Q: Does this come with header pins soldered?

A: No, the module is shipped without header pins to allow for flexible mounting options (such as soldering wires directly or using right-angle headers). You will need to solder your own connectors.

Q: Is the output analog or digital?

A: This breakout board provides a digital output (HIGH/LOW). There is an onboard comparator that converts the analog signal from the phototransistor into a clean digital signal based on the threshold set by the potentiometer.

Q: Can this sensor detect clear plastic objects?

A: The QRE1113 relies on reflected infrared light. Clear plastic may allow the IR to pass through rather than reflect it back, resulting in unreliable detection. It works best on opaque surfaces with contrasting colors.

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