# VEX Sensors

- [3-Pin / ADI Sensors](/vex-electronics/vex-sensors/3-pin-adi-sensors.md): This section houses sensor articles that are about 3-wire or pin ADI sensors.
- [Encoder](/vex-electronics/vex-sensors/3-pin-adi-sensors/encoder.md): The VEX Encoder helps to determine the rotation of a shaft.
- [Potentiometer](/vex-electronics/vex-sensors/3-pin-adi-sensors/potentiometer.md): The VEX Potentiometer helps track the rotations of shafts
- [Limit Switch](/vex-electronics/vex-sensors/3-pin-adi-sensors/limit-switch.md): The Limit Switch is a sensor that returns a value when it is pressed.
- [Bumper Switch](/vex-electronics/vex-sensors/3-pin-adi-sensors/bumper.md): The Bumper Switch returns when the switch is pressed.
- [Accelerometer](/vex-electronics/vex-sensors/3-pin-adi-sensors/accelerometer.md): An Accelerometer measures proper acceleration.
- [Gyroscope](/vex-electronics/vex-sensors/3-pin-adi-sensors/gyroscope.md): The VEX Yaw Rate Gyroscope returns the rate of rotation around the vertical axis.
- [Ultrasonic](/vex-electronics/vex-sensors/3-pin-adi-sensors/ultrasonic.md): The VEX Ultrasonic Range Finder helps determine how far away an object is.
- [Line Tracker](/vex-electronics/vex-sensors/3-pin-adi-sensors/line-tracker.md): The Line Tracker can track "lines" and other objects using infrared LEDs
- [LED Indicator](/vex-electronics/vex-sensors/3-pin-adi-sensors/line-tracker-1.md)
- [Smart Port Sensors](/vex-electronics/vex-sensors/smart-port-sensors.md): This section houses sensor articles that are about RS485 or smart port sensors.
- [GPS Sensor](/vex-electronics/vex-sensors/smart-port-sensors/vex-gps-sensor.md)
- [Rotation Sensor](/vex-electronics/vex-sensors/smart-port-sensors/rotation-sensor.md)
- [Vision Sensor](/vex-electronics/vex-sensors/smart-port-sensors/vision-sensor.md): The Vision Sensor tells you where colored objects are located.
- [Optical Sensor](/vex-electronics/vex-sensors/smart-port-sensors/optical-sensor.md): The VEX V5 Optical Sensor is used to determine the color of an object and has secondary function to determine the relative motion of an object
- [Distance Sensor](/vex-electronics/vex-sensors/smart-port-sensors/distance.md): The VEX V5 Distance Sensor measures the distance between the sensor and an object using a small laser.
- [Inertial Sensor (IMU)](/vex-electronics/vex-sensors/smart-port-sensors/imu.md): The Inertial Sensor is a combination of an Accelerometer and Gyroscope.
- [3-Wire Expander](/vex-electronics/vex-sensors/smart-port-sensors/3-wire-expander.md): Use up to eight more 3-wire ports with the V5 3-Wire Expander.