VEX Light Sensor

Light Sensor

P/N: 276-2158

The Light Sensor uses a photocell that allows your robot to detect and react to light. With the light sensor, you can program a whole new range of capabilities to your robot. A Programming Kit is needed to change the program in the VEX Controller.

  • Analog input of light levels
  • Usable range of 0 to 6 feet
  • Find dark or bright areas
  • Create more autonomous function

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More Information

The VEX Flashlight can be used in conjunction with a light sensor or camera to provide a source of white light. The Flashlight is connected to the microcontroller via a 2-wire power connection. The flashlight does not contain any control circuitry, so it will run continuously while it receives power. It has an on/off slide switch, so it can be manually disabled if desired.

The VEX Flashlight provides a source of illumination for a light sensor. It is typically plugged into the power pins of a 3-wire motor port (the two pins furthest from the index tab), and will operate continuously while the VEX microcontroller is powered.

If attached to a 2-wire motor port, the flashlight can be controlled by setting the speed of the motor port. Setting the motor speed to "stopped" will turn the flashlight off. Setting it to "full speed" will turn the flashlight on, though only in one direction (forward or reverse), depending on the polarity of the connection to the 2-wire motor port.

Technical Specifications

  • (1) Light Sensor

    Light Source

    • Four white LEDs.


      • Standard VEX 2-wire connection
      • Black: Ground
      • Red: (+) power

      Power Consumption

      • 17.9mA @ 8.4V (very bright)
      • 10.3mA @ 7.2V (bright)
      • 3.3mA @ 6.0V (dim)
      • 0.1mA @ 5.0V (faint)