top of page
DFRobot Mini Laser I2C Distance Range Sensor Module - 2-400cm Measurement Range

DFRobot Mini Laser I2C Distance Range Sensor Module - 2-400cm Measurement Range

₹1,599.00Price
🔍 Overview
The module is a laser-based distance sensor using optical Time-of-Flight (ToF) ranging technology.
  • Measures distance: 2 cm to 400 cm
  • Provides digital output via I²C
  • Designed for high-speed, short-to-medium range distance measurement
👉 It is an active optical sensor (emits laser light and measures reflection time).
⚙️ Working Principle (Time-of-Flight)
  • The sensor emits a laser pulse
  • The pulse reflects off an object
  • The sensor measures the time taken for the light to return
  • Distance is calculated using:
Distance=c×t2\text{Distance} = \frac{c \times t}{2}Distance=2c×t​
Where:
  • ccc = speed of light
  • ttt = round-trip time
👉 This method enables:
  • Fast response
  • High precision compared to ultrasonic sensors
📊 Measurement Characteristics
  • Range: 2 cm to 400 cm
  • Accuracy:
    • ≤25 cm: ±1 cm
    • 25 cm: ±4% of distance (approx., ~5 mm practical error)
  • Detection angle: ~19°
👉 Narrow beam → better directional measurement
⚡ Electrical Characteristics
  • Supply voltage: 3.3V to 5V
  • Idle current: ~2 mA
  • Operating current: < 19 mA
👉 Efficient for embedded and battery-powered systems
🔗 Communication Interface
  • Interface: I²C digital communication
  • Typical I²C address: 0x74 (or configurable variant)
  • Output:
    • Distance in mm / cm / m (via register read)
👉 No analog signal → direct integration with microcontrollers
⏱️ Performance Parameters
  • Response time: 19–38 ms
  • Measurement frequency: up to ~100 Hz
  • Startup delay: ≤800 ms
👉 Suitable for real-time sensing applications
🌡️ Environmental Characteristics
  • Operating temperature: −15°C to 60°C
  • Storage temperature: −30°C to 80°C
  • Some variants feature:
    • IP67 protection (dustproof & waterproof)
🧠 Internal Features
✔ Optical Ranging System
  • Integrated laser emitter + photodetector
  • Signal processing for distance calculation
✔ Digital Signal Processing
  • Filters noise and reflections
  • Provides stable output data
✔ Narrow Field-of-View
  • ~19° beam angle
  • Reduces interference from surrounding objects
🔄 Operating Behavior
✔ Surface Dependency
  • Works best on:
    • Solid, reflective surfaces
  • Less accurate on:
    • Transparent objects
    • Very dark or absorbent materials
✔ Lighting Conditions
  • Generally robust to ambient light
  • Very strong sunlight may slightly affect readings
✔ Measurement Stability
  • Stable at short distances
  • Slight variation at long range due to:
    • Surface reflectivity
    • angle of incidence
⚠️ Limitations
  • Cannot measure through transparent materials reliably
  • Performance affected by:
    • Surface texture
    • Reflectivity
  • Accuracy decreases at longer distances
  • Not suitable for:
    • sub-millimeter precision applications
🧩 Module Structure
Typical connections:
  • VCC
  • GND
  • SDA
  • SCL
👉 Fully digital module → minimal external components required
🏁 Summary
This DFRobot Mini Laser Distance Sensor is a compact, high-speed optical distance measurement module that:
  • Uses laser ToF technology
  • Measures 2–400 cm range
  • Provides fast, accurate digital output via I²C
  • Offers low power consumption and compact design
  • Is optimized for real-time distance and proximity sensing
Quantity
bottom of page