FLARM ATOM UAV - Data Interfaces; JST GH Connector; TFM Connector

ATOM UAV MANUAL
Date: 2021-10-28
Version: 1.1
Page: 12 of 35
FLARM Technology Ltd
Hinterbergstrasse 15
CH-6330 Cham
Document Number:
FTD-088
3.4 Data Interfaces
The Atom UAV standalone variant is mounted with a JST GH connector to facilitate
connection to popular flight controllers. Atom UAV OEM variant is mounted with a
TFM connector for ease of integration as a component into larger systems. The
basic functionality is the same with both variants.
3.4.1 JST GH Connector
The Atom UAV standalone variant is equipped with a GH connector from JST
1
. It
exposes a 3.3 V UART interface and may be used to supply power. The pin
assignment is shown in the table below.
Table: JST-GH Pinout
Pin
Function
Function Alt
1
Vin 5–28 V
2
TXD UART (Out)
3
RXD UART (In)
4
CANbus TX (Out)
GPIO
5
CANbus RX (In)
GPIO
6
GND
When connecting to a Pixhawk or similar flight controller, the
RX and TX lines must be crossed, i.e., TX of the flight
controller must be connected to RX of the Atom UAV, etc.
The JST GH receptacle is surface mounted to the board; thus,
the mechanical stability is limited. Do not put force on the
solder connections!
3.4.2 TFM Connector
The Atom UAV OEM variant is equipped with a TFM-104-02 board-to-board
connector. The corresponding connector for the main board is the equivalent SFM
connector. The table below shows the pin assignment.
Table: TFM-104-02-L-D Pinout
Pin
Function
Function Alt
1
Vin 5–28 V
2
TXD UART (Out)
3
DO NOT CONNECT
4
RXD UART (In)
5
DO NOT CONNECT
6
CANbus TX (Out)
GPIO
1
https://jst.de/product-family/show/89/gh