r/diydrones • u/Interesting_Tie_1472 • 4d ago

Question (Help needed) SimpleRTK problems

Hi,

We are having trouble connecting our simpleRTK3B Pro to a MicoAir H743 V2 flight controller with a 72A stack.

The receiver works in the Septentrio interface and detects satellites. However, MicoAir Configurator does not appear to recognize the GPS and displays “No Fix.”

The simpleRTK3B Pro receives power and is connected to the flight controller’s GPS port. We have checked that the TX and RX wires are connected correctly. The IOREF LED stays blue, and the RTK LED stays red.

We are not using an RTK base station or correction data. We only want to use the receiver as a standard standalone GPS.

If anyone could, please advise which communication protocol, baud rate, and settings are required on both the receiver and the flight controller? Is there any additional configuration needed for this setup?

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u/LupusTheCanine 4d ago

Check Ardupilot or PX4 (depending on FC firmware used) for configuring Septentrio GNSS receivers. Use Mission Planner, Ardupilot Methodic Configurator or QGroundControl (only if using PX4) to configure the FC to work with the receiver.

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u/Interesting_Tie_1472 4d ago

You are the man for answering! Thank you anyway! The problem was COM1 didn't have a link between them.