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TIME OF FLIGHT SENSOR
An infrared ground-distance sensor on the bottom of
the Teal 2 works in conjunction with other on-board
(GPS and barometric pressure) sensors to determine
the distance to the ground to assist in landing.
The photo-diode emitter in this ground-distance sensor
beams down infrared light, and a photo-diode receiver
senses the reflections from that light to detect the
distance to ground by measuring the “time of flight” of
that light. It starts sensing the ground at about 12-15
meters high.
STOCK PAYLOAD
The stock payload on the Teal 2 is a dual-axis (pitch and
roll) gimballed FLIR Hadron 320 EO/IR camera module.
The payload electrical interface to the Teal 2 utilizes
plug-in cables for ease of swapping the payload.
The gimbal’s pitch angle ranges from +35° to -110°,
and its roll angle ranges from +25° to - 25°. The roll
function is automatic, so that it rolls in the opposite
direction as the Teal 2, allowing for the camera to
remain horizontal in roll and pitch up to 25°.
The electro-optical portion of the camera is a 12
Megapixel CMOS image sensor combined with an 80-
degree horizontal field-of-view (HFOV) lens. The EO
camera takes 4,000x3,000 video as well as 12 MP
resolution still images in JPEG or TIFF format. Optical
video from the camera is stored in the Teal 2’s on-
board flash memory or SD card.
The infrared portion of the camera has a 34-degree
HFOV and captures video in a 640x512 format. The IR
camera also has a built-in shutter for automating non-
uniformity correction, which reduces image blurring
and artificial ghosting. IR video is stored in on-board
flash memory or SD card in 640x512 format.
The EO/IR camera module provides simultaneous EO
and IR video streams to the Teal 2 CPU, formatted as
an H.264 elementary stream video within a MPEG2
Transport Stream. Either optical or IR video can be
selected (on the TAC) to be transmitted over the radio
link in a compressed format. Transmitted optical video
is sent in a 720p (progressive scan) format. Video
latency to the TAC has been minimized to ensure safe
operation in confined areas.
MICRO SD CARD SLOT
The I/O port cover door swings open to expose the I/O
ports. The port on the left is a Micro SD card slot. Teal’s
Field Repair Kit includes one 128 GB Micro SD card and
one SD card adapter that can be used to store and
transfer media files from the Teal 2.
Using the Micro SD card for storage is
not a secure method of transferring
confidential media files, but currently is
one of the limited options for doing so.
Be sure you understand the risks of
losing the content of the SD card if the
drone is lost or not recoverable.
AUXILIARY LIGHTING
The Teal 2 includes an illumination panel on each right
and left side of the airframe. These panels are designed
to spread light vertically from the bottom to the top of
the airframe to be visible from nearly all angles in
flight. The stock Teal 2 lights may not be bright enough
or have appropriate directivity for some applications
such as anti-collision, search and rescue, or line-of-
sight navigation at a distance. For these situations, it is
desirable to attach third-party auxiliary lighting to the
airframe.
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