The following guide pertains to setting up Vernier (BTD) Photogates for data collection in a projectile motion experiment.
Photogate (VPG-BTD)
If you are looking for instructions for setting up a Go Direct Photogate, see
How do I set up Go Direct Ph...
This information pertains to LabQuest 2.
If you have LabQuest 3, see this article.
If you have an original LabQuest, see this article.
LabQuest 2 ⚊version 2.9.2 (January 15, 2026)
Resolved Issue
Addressed an issue where the LabQuest App ...
The following information describes how to set up wired Vernier Photogates (VPG-BTD) when using LabQuest as a standalone device.
If you are collecting data with a computer and Logger Pro, see this article.
If you are collecting data with Graphical ...
In LabQuest 2.8.4 or newer, be sure the Photogate Timing Mode: Projectile Launcher has the "Use Time of Flight Pad" option selected.
In older versions of the LabQuest App, make sure the experiment is set to end after 6 events.
The Logger Pro 3 expe...
Vernier Projectile Launcher (VPL)
Specifications and User Guide
Troubleshooting
Primary Test: Verify that the Projectile Launcher is powered from either an interface via the photogate cable or from AC power via a LabQues...
Time of Flight Pad (TOF-VPL)
Specifications and User Guide
TROUBLESHOOTING
Primary Tests:
- When used with a Vernier Projectile Launcher, make certain that the Time of Flight Pad is connected to the "Accessory" or "Ext. Switch" port on the launcher....
Independence of Motion Accessory (IOM-VPL)
Specifications and User Guide
TROUBLESHOOTING
Primary Tests:
- Does the Vernier Projectile Launcher or Go Direct Projectile Launcher launch a projectile when the Independence of Motion Accessory is not atta...
As projectile launchers are used, the projectiles (balls) may transfer some dirt to the inner surface of the barrel. The design of the launchers depend on a close fit between the ball and the barrel, so any additional material will cause friction and...
If you are not getting consistent launch speeds for a specific launch angle and range setting, check the following:
- Be certain the projectile ball is pushed back and seated against the air port before launch.
When...
When using the Time of Flight Pad with the Vernier Projectile Launcher or Go Direct Projectile Launcher, each successful launch that hits the pad will show 6 events (3 blocked and 3 unblocked) in the data table. If that is not happening, check the fo...