Line Finder (sensor)

Line Finder (sensor)

Regular price $3.00 Sale

The Line Finder sensor is an IR reflection sensor module, which can serve as line finder.

The principle of black line detection is: the infrared emitting tube emits light ray to the surface of the road, the IR light will be reflected when touching the white road, and the receiving tube will receive the reflecting light.

*Compatible with the DIY and mCookie series.

Description of the Sensor Pin

Line Finder Sensor
General Pin Out Sensor / Trinket's Pin Out
PIN3 (SIGNAL-A) Analog Input
PIN4 (SIGNAL-B) Not Connected
  • General Pin Out is the standard pin out of a Sensor / Trinket connector.
  • Sensor / Trinket's Pin Out is this specific Sensor / Trinket's wiring in relation to the General Pin Out.
  • SIGNAL-A / SIGNAL-B are signals that could be digital input, digital output, analog input or analog output. Or special signals such as serial communication (SoftwareSerial, IIC (I2C), etc) or other special signals.
  • Not Connected refers to the Pin not being used for this particular Sensor / Trinket.
  • Read more about the hub module.


  • With high detection sensitivity and good stability
  • With small size


  • Voltage
    • 3.3V~5V working voltage
  • Size
    • Size of the board: 23.5mm*13mm
    • 1.27mm-spacing 4Pin interface connected with sensorhub
    • The CAD drawing of the sensor: File:Sensor
  • Technical parameters
    • Can detect the distance form the obstacle, and the measuring range is about 3cm
    • Can detect white and black, which make it can serve as line finder.
  • Connection
    • This sensor can be connected to the following interfaces of core: A0~A7