About the module

A technical overview of the GRYFN Precision Tracking Module

What's included?

Here's what's included with each module:

GRYFN Precision Tracking Module

Applanix AV14 GNSS antenna

DJI Phantom 4 mount

DJI Mavic 2 mount

DJI Phantom 4 antenna mast with antenna cable

18650 lithium-ion battery

Battery charger

GRYFN USB drive with software and miscellaneous files

Miscellaneous mounting hardware

What makes up the module itself?

Here's what's inside:

Applanix APX-15v3

GRYFN integration PCBA

GRYFN PA-12 (nylon) module housing

GRYFN Integration PCBA

The Applanix APX-15 at the heart of the GRYFN Precision Tracking Module is an OEM component with many inputs, outputs, and optional features. The key integration component enabling the APX-15 is GRYFN's custom integration PCBA which supplies power, an RJ45 ethernet interface, and LED status indicators.

Power Supply

The GRYFN Integration PCBA for the precision tracking module supplies under and over-voltage protected, over-current protected, and reverse-voltage protected 9V power to the APX from a single 18650 size lithium-ion battery cell. A low-voltage cutoff is employed to limit battery drain to about 3.3V. Power can be toggled via the red button on the module.

Battery and Charger

The battery in the GRYFN Tracking module is a lithium-ion 18650 cell which installs into the module as shown below. The included battery is a Panasonic NCR18650B. It is charged with a NITECORE UI1, also included with the module.

Lithium-Ion 18650 cell installed in Tracking Module

For more information on charging and safety practices, please refer to the NITECORE UI1 user manual

LED Status Indicators

There are 3 status indicators on the module that indicate status of the APX. A red LED that indicates power/status, an amber LED that indicates satellite status, and a green LED that indicates IMU navigation status. See tables below for a description of LED status indicators.

LEDs from top to bottom: Power, Satellite, IMU

Power LED Status

Status	Signal
Power Off	Off
Power On	On
Data Logging	Slow flash

Satellite LED Status

Status	Signal
Tracking less than 5 satellites	Rapid flash
Tracking more than 5 satellites	Slow flash

IMU LED Status

Status	Signal
Unknown or no SNV solution	Off
Coarse leveling	5Hz
Degraded solution	2Hz
Aligned solution	1Hz

Tip: The IMU LED should indicate an aligned solution after the UAV module has completed the dynamic alignment process.