21
21
AsteRx-m2a UAS
21
3.1
Connectors
ID
Type
Description
Usage Example
J1
30-pin DF40C
Connector to the AsteRx-m2a board
J2
Micro B USB
USB interface to AsteRx-m2a
Connect to laptop or PC to power the board
and control the AsteRx-m2a.
J3
DF13-6P-1.25DSA
COM1 TTL UART from AsteRx-m2a.
Pin#1 is a 5V power input
Connect to the GPS-port of a Pixhawk
(compatible with standard Pixhawk cables)
J4
DF13-6P-1.25DSA
COM2 TTL UART from AsteRx-m2a.
J5
DF13-4P-1.25DSA
COM3 TTL UART from AsteRx-m2a. Default
TTL, but RS232 possible via solder jumper.
J6
.1" RA Header 1x3
Pin#2 is connected to ground for 30ms
starting at the rising edge of the PPS pulse
from the AsteRx-m2a. Otherwise it is
floating.
This feature can be used to control a camera
trigger from the PPS output signal of the
AsteRx-m2a.
J7
.1" RA Header 1x2
3.3V-LVTTL event input. Connects to the
EventA pin of the AsteRx-m2a through an
inverter. A high-to-low transition at the J7
connector corresponds to a low-to-high
transition as seen by the AsteRx-m2a and
vice versa.
This header can be connected to the flash
port of a camera (e.g. via Hot Shoe or
Prontor-Compur interface), to allow the
AsteRx-m2a to time tag the pictures and
provide the position at the exact time the
picture was taken.
J8
DF13-4P-1.25DSA
Reserved
J10
.1" RA Header 1x2
6-30V DC supply
Can be directly connected to a battery pack.
J11
.1" RA Header 1x3
5V DC out (max 2A)
J12
DM3AT-SF-PEJM5
µSD-card socket for GNSS measurement
logging
J13
.1" V Header 1x2
Connects to the Button pin of AsteRx-m2a
Push-button to start/stop logging and
mount/unmount the SD-card. The interface
board contains a debouncing circuit. See
section 2.10.
