VERNIER GO DIRECT PHOTOGATE
The Vernier Go Direct Photogate is a double-gate sensor that includes two photogates built into the sensor arms to accurately measure velocity and acceleration. It connects via Bluetooth® wireless technology or via USB to your device.

With Vernier's Go Direct Photogate students are able to easily and precisely 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.

Vernier 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).

Vernier 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

Rechargeable Battery — Ready When You Are
The Vernier Go Direct™ robust rechargeable battery offers long battery life and provides always-ready operation. Monitor battery life directly from Vernier's free Graphical Analysis™ 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.

Wired or Wireless — The Flexibility to Choose
Vernier's Go Direct™ sensors connect directly to your mobile device, Chromebook or computer using Vernier's free Graphical Analysis™ app. No additional equipment or software purchases are necessary. Vernier Go Direct sensors can be used wired via USB or wirelessly via Bluetooth allowing you to choose the solution best for your classroom or laboratory.

Vernier Graphical Analysis™ Pro includes all the features of the free Vernier Graphical Analysis app, plus enhanced functions for more advanced analysis. Its illustrative experiment videos and interactive graphing capabilities inspire students to explore crucial scientific concepts and analyze data in new complex and insightful ways.
Vernier Graphical Analysis™ Pro is compatible with most Vernier sensors and multiple operating systems and devices.

Specifications:
• Infrared source: Peak at 880nm
• Gate width: 77.5mm
• Internal gate separation: 20mm
• Distance from internal gates to bottom of photogate arms: ~10mm
• Distance from internal gates to sides of photogate arms: ~5mm
• Gate LED indicators: Off for unblocked gate, on for blocked gate
• Battery: 300mAh 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

NOTE: Vernier photogates have an electronic timing resolution of 1 microsecond but typically get measurements with only +/-25 millisecond accuracy due to variations in optical-response tolerances of the photodiodes and the geometry of the object relative to the path it takes through the photogate.
When using multiple Vernier Go Direct Photogates connected wirelessly students will typically get measurements with +/-35 millisecond accuracy. This 10 millisecond difference is associated with the initialization of multiple device clocks when starting data collection. Two Vernier Go Direct Photogates daisy-chained together do not experience this added error as they are utilizing a single clock.
Daisy-chaining two Vernier Go Direct Photogates requires the separate purchase of
VPG-CB-GDX Vernier Go Direct® Photogate Timing Cable

Included:
• Vernier Go Direct® Photogate
• Vernier Micro USB Cable CB-USB-MICRO
• Vernier Accessory Rod

Educational use only:
Vernier and Kidwind products are designed for educational use. They are not appropriate for industrial, medical or commercial applications. Details

• Warranty: 5 year limited warranty (1 year on battery)

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  Dimensions
  • Package size (HxWxD): 51 x 152 x 241mm
  • Packed weight: 160g

    Last edited 29th Jan 2024

    This product is used in teaching these Australian Curriculum codes:
    ACSSU229 - Physical Sciences - Forces and Motion - The motion of objects can be described and predicted using the laws of physics
    ACSPH063 - Linear Motion and Waves - Linear motion and force - Newton’s Three Laws of Motion describe the relationship between the force or forces acting on an object, modelled as a point mass, and the motion of the object due to the application of the force or forces
    ACSPH099 - Gravity and electromagnetism - Gravity and motion - Projectile motion can be analysed quantitatively by treating the horizontal and vertical components of the motion independently
    
    Click a curriculum code to see other products that relate.

    Accessories / Spare Parts:	From
    VPG-CB-GDX - Vernier Go Direct Photogate Timing Cable	$19.00
    CB-USB-MICRO - Vernier Micro USB Cable	$12.00
    TOF-VPL - Vernier Projectile Time of Flight Pad	$202.00
    TOF-CB-GDX - Vernier Go Direct Time of Flight Pad Cable	$19.00
    GDX-BAT-300 - Vernier Go Direct 300mAH Replacement Battery	$24.00
    PF - Vernier Picket Fence	$24.00
    SPA - Vernier Ultra Pulley	$58.00
    ACC-ROD - Vernier Photogate / DFS Rod	$10.00
    Works with:	From
    LQ3 - Vernier LabQuest 3 Data Logger and Interface	$972.00
    GA4 - Vernier Graphical Analysis	$0.00
    GAP-1Y - Vernier Graphical Analysis Pro 1 Year	$331.00
    Similar Products:	From
    VPG-BTD - Vernier Photogate	$132.00

    Documents:
    Catalogue	Vernier Catalogue K-12
    Catalogue	Vernier Catalogue Uni
    Compatibility Guide	Sensor-Interface-Software Requirements (external link)
    User Manual	Vernier Go Direct Photogate

    
    Note: Prices do NOT include GST or freight