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Active Puck

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Page Scope

This page provides additional information for the Active pucks and instructions on how to use them.

Active Markers

LED specification

The following specification applies for active IR LEDs on both the Tags and the Pucks.

  • 850 nm IR spectrum.
  • 8 LEDs with removable diffusers (9.5mm, 3/8", diameter) on four corner LED locations
  • Illuminations synchronized with camera exposures
  • Illumination angle:
-With Diffuser: ±135°
-Bare LED without diffuser: ±65°

Active Puck

Basic Specs

Spec Description

Puck Body Dimensions

Dimensions without diffusers

  • Width: 96mm (~3.75”)
  • Length: 96mm (~3.75”)
  • Height: 20mm (~0.75”)

Dimensions with diffusers

  • Width: 104mm (~4.10”)
  • Length: 104mm (~4.10”
  • Height: 20mm (~0.75”)


  • 2.24 oz (64g)


  • Slots for (2) 7/8th inch velcro/elastic straps on the underside of the puck
  • ¼ - 20 camera mount style thread on bottom for other convenient mounting solutions


1200 mAh Lithium polymer battery

  • Expected life 10 hrs at nominal operating conditions (cameras operating at 180Hz, with 500 𝞵s exposure setting). Lower frame rates or exposure times can extend battery life.


  • 5V micro USB power source required to charge
  • ~ 3hrs zero to full charge

Power Button

  • Power on: Press down on the button for ~1 second to turn on the puck. It will illuminate the top LED in orange for a few seconds until it initializes.
  • Power off: Hold down the button ~2 seconds
  • Battery status check: Press down on the button while the puck is powered on to illuminate the battery status LED.
  • Power button.
  • Puck initializing.
  • Powered on and connected to a Base Station.


Bootloader: Pressing down on the button for longer than 3 seconds will set the puck at the bootloader state. At this state, both the top and bottom LED will turn orange, and the puck will not be operational. To exit out of this, you can just power off the puck and turn it back on.

Status Indicator LEDs

Three LEDs on the puck. This may be slightly different on the different revisions.

Three plainly visible status LEDs for indication of battery status, sync status, and charging status.

1) Sync – (Bottom)

The bottom LED indicates the sync status. When the puck is successfully synchronized with a base station, it will start receiving sync packets, and this bottom LED will start blinking green roughly at 10 Hz rate:

  • Blinking green: Sync packets are being received.
  • Red: The first sync packet has not been received yet. At this stage, the puck is waiting for the packet.
  • Continuous green: The first packet was received for initial synchronization but sync packet is no longer being received.

2) Power – (Top-Left)

  • Normal: illuminates in green and blinks every 5 seconds. You can also press on the power button to check the battery.
  • Color indicator: Green (Good charge), yellow (getting low), red (extremely low).
-Green: battery sufficient
-Yellow: ~1 hour left
-Red: ~20 minutes left until power is depleted

3) Charging Status – (Top-Right)

  • Red: Charging / Idle
  • Green: Fully Charged
  • Yellow/orange: Bad battery. Stop using the puck and contact support
  • Connected to a base station. Bottom LED blinks in green indicateing that it is actively communicating with the base station. If this LED lights up in continuous green, it means that the puck is no longer communciating with the base station after the initial connection.
  • Not connected to a base station. Waiting for the first sync packet.
  • Connected to a base station, but the battery is running low.