The MR-CANHUBK3 contains 4 UART connectors (P2, P5, P24, P25)
UART Connectors
P2 and P5 follow the Dronecode 6-pin UART standard. Pin 1 is able to supply limited 5V power to an external device such as a GPS module or sensor.
Connectors P2 and P4:
Pin #
Signal
Specification
1
5V
(Optional) Limited 5V Output
2
TX
3.3V
3
RX
3.3V
4
CTS
3.3V
5
RTS
3.3V
6
GND
0V (GND)
Connectors P24 and P25 are also 6-pin JST-GH. However, they are not fully compliant with the Dronecode standard since pins 4 and 5 are repurposed to be a second UART channel instead of the handshaking lines RTS/CTS. The pinouts are shown below.
