PhysGate, an infrared (IR)-based photogate, is the ultimate tool to record how an object appears and disappears with time. A lego exterior provides robust mounting of the PhysGate to fit a range of user-defined orientations and applications. With a response time as fast as 1 µs, it finds its application in reading optical encoders as well. Works like a charm!

Datasheet and other Documents

  • High sensitivity to even semi-transparent medium
  • Compact and adaptable to various installments
  • PhysInstrument class: Analog
  • Connects with PhysLogger
  • Lego casing and bracket
  • Hot pluggable
Typical Applications
  • Learn about pendulums and oscillators
  • Calculate gravity by accurately timing a free fall
  • Investigate collisions and the laws of motion on an air track
  • Determine how fast your motor rotates; use it as an optical tachometer
  • Explore a wide variety of principles in rotational mechanics
Tech Specs
Photogate width
Photogate width: 4.5 cm
Response time
Response time: Less than 1 µs
Obstruction sensor
Obstruction sensor: IR-based