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Find ready-to-use experiments that help you integrate data collection technology into your curriculum.

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Our products compliment your teaching and help your students engage with key STEM concepts.

Educational Standards

Our products support provincial requirements for NGSS, AP, and more.

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.

SKU: GDX-VPG Categories: , ,


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 3 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)
ConnectionsWireless: Bluetooth
Wired: USB

Go Direct Photogate
Accessory Rod
Micro USB Cable

Bar Tape (TAPE)
Cart Picket Fence (PF-CART)
Go Direct® Photogate Timing Cable (VPG-CB-GDX)
Go Direct® Time of Flight Pad Cable (TOF-CB-GDX)
Laser Pointer (LASER)
Laser Pointer Stand (STAND)
Micro USB to USB-C Cable (CB-USB-C-MICRO)
Picket Fence (PF)
Time of Flight Pad (TOF-VPL)
Ultra Pulley Attachment (SPA)

Replacement Rod, 5 inch (ACC-ROD)
Micro USB Cable (CB-USB-MICRO)
Go Direct® 300 mAh Replacement Battery (GDX-BAT-300)

User Manual:
Warranty: 5-year limited warranty (1 year on battery)