Vernier Software and Technology
Vernier Software & Technology

Go Direct® Photogate

Product image for Go Direct® PhotogateProduct image for Go Direct® Photogate
Product image for Go Direct® PhotogateProduct image for Go Direct® Photogate

Go Direct Photogate is a double-gate sensor that includes two photogates built into the arms of the sensor, which accurately measures velocity and acceleration. It connects via Bluetooth® wireless technology or via USB to your device.


Using Go Direct Photogate, students are able to easily and accurately measure velocity and acceleration to study the movement of an object in free fall, rolling objects, collisions, and pendulums, without needing to know anything about the geometry of the object.

Go Direct Photogate also includes a single laser gate for use with objects passing outside of the arms of the sensor. Using the laser gate requires a visible-light pen laser (not included).

Go Direct Photogate can be used in a variety of experiments:

  • Measuring acceleration of a cart on an incline using a cart picket fence
  • Measuring the angular motion of a wheel as it is turning
  • Investigating Newton’s second law using a half-Atwood machine to measure acceleration
  • Determining the time an object passes one or more gates

Wired or Wireless—The Flexibility to Choose

Our Go Direct sensors connect directly to your mobile device, Chromebook, or computer using our free Graphical Analysis 4 app—no additional equipment or software purchases are necessary. Go Direct sensors can be used wired via USB or wirelessly via Bluetooth® wireless technology, allowing you to choose the solution best for your classroom or laboratory.

Rechargeable Battery—Ready When You Are

The robust rechargeable battery offers long battery life and provides always-ready operation when using the sensor wirelessly. Monitor battery life directly from our free Graphical Analysis 4 app or LabQuest 2 App. Should the battery run low, simply connect the sensor to the charging cable and keep on collecting—no interruptions or inconvenience to you or your students.


  • Infrared source: Peak at 880 nm
  • Gate width: 77.5 mm
  • Internal gate separation: 20 mm
  • Distance from internal gates to bottom of photogate arms: ~10 mm
  • Distance from internal gates to sides of photogate arms: ~5 mm
  • Gate LED indicators: Off for unblocked gate, on for blocked gate
  • Battery: 300 mAh Li-Poly Rechargeable
  • Battery life (single full charge): ~10 hours continuous data collection
  • Battery life (long term): ~300 full charge cycles (several years depending on usage)
  • Connections
    • Wireless: Bluetooth
    • Wired: USB

Compatibility Requirements

What’s Included

  • Go Direct Photogate
  • Accessory Rod
  • Micro USB Cable

Ordering Information

All prices are for U.S. educators.

NameOrder CodePriceQuantity
Go Direct® PhotogateGDX-VPGContact Us
Optional Accessories
Bar TapeTAPEContact Us
Cart Picket FencePF-CARTContact Us
Go Direct® Photogate Timing CableVPG-CB-GDXContact Us
Go Direct® Time of Flight Pad CableTOF-CB-GDXContact Us
Laser PointerLASERContact Us
Laser Pointer StandSTANDContact Us
Micro USB-C CableCB-USB-C-MICROContact Us
Picket FencePFContact Us
Time of Flight PadTOF-VPLContact Us
Ultra Pulley AttachmentSPAContact Us


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Educational use only: Vernier products are designed for educational use. They are not appropriate for industrial, medical, or commercial applications. Product usage disclaimer »

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