A
Anonymous
Apr 09, 2026
Rating: 4/5
Good value
Bought ten for our class. Most worked perfectly out of the box. One needed reseating.
Description
HC-SR501 Human Body Infrared Sensor Module PIR
Reviews
Attributes
| Brand | - |
| Category | Electronic Components / Maker DIY / Computer Hardware, Monitors & Peripherals |
| Origin | - |
| Sensor Technology | Time-of-Flight (ToF) |
| Measurement Range | Up to 4 meters (VL53L1X) |
| Interface | I2C |
| Operating Voltage | 2.6V to 3.5V |
| Accuracy | +/- 3mm typical |
| Field of View | 15 degrees diagonal |
| Module Dimensions | 25mm x 15mm x 3mm |
| Weight | 2 grams |
| Microcontroller Compatibility | Arduino, Raspberry Pi, ESP32 |
| Package Contents | 1x Sensor Module, 1x Pin Header |
5 reviews
A
Anonymous
Apr 01, 2026
Rating: 4/5
Accurate but sensitive
Very accurate indoors. Direct sunlight affects performance slightly as expected with ToF.
A
Anonymous
Mar 24, 2026
Rating: 5/5
Great for robotics
Used this for obstacle avoidance on my rover. Works flawlessly with the provided library.
A
Anonymous
Mar 10, 2026
Rating: 5/5
Easy I2C integration
Library support is excellent. Got it running in minutes on my ESP32 project.
A
Anonymous
Jan 31, 2026
Rating: 5/5
Perfect size
Compact enough for my wearable project. Low power consumption is a big plus.
5 FAQ
Q: Is there a library available for Arduino?
A: Yes, Pololu and Adafruit offer compatible Arduino libraries for this sensor.
Q: What is the maximum reliable range?
A: The VL53L1X variant supports up to 4 meters in ideal lighting conditions.
Q: Can I use multiple sensors on one bus?
A: Yes, by configuring different I2C addresses via the XSHUT pin on each module.
Q: Does this work with 5V Arduino boards?
A: Yes, but logic level shifting is recommended for I2C lines to ensure stability.
Q: Does it work on black surfaces?
A: Performance may vary on highly absorbent surfaces, but it is generally effective.
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