In order for the drone we assembled to successfully fly and communicate with the GCS, it is necessary to correctly configure the input/output ports. In the article about assembling the drone, we soldered the connections of the telemetry modems, as well as the GPS module. Now we need to make sure that the soldering ports match the ports at the firmware level.

This way, the drone will be able to receive commands transmitted from the GCS and send data back to the GCS, such as location, roll, direction, and others. It will also be able to read its coordinates from the GPS module.

Connection

• Connect to the flight controller via USB cable (this time do not press the button to enter DFU mode).
• Connect a LiPo battery to the quadcopter (may not be required).
• Run the LOGOS GCS program and connect to the drone, selecting the network type "AUTO(SERIAL)".

Settings

• Go to the "UAV Settings" → "Ports" section.
• If the selected tab does not display the port settings, try switching to any other tab and return back.
• In the "Serial 3" cell, you must specify the "MAVLink2" protocol and the baud rate "57_600".
• In the "Serial 6" cell, you must specify the "GPS" protocol and the baud rate "38_400" (the baud rate may be different if a module other than UBLOX 7M is selected).
• Click the "Save" button.

These settings are presented for the SpeedyBee F4V3 controller, which are using to demonstrate the full cycle of assembling and configuring the UAV from scratch. If you have chosen a different model of flight controller and the soldering locations of telemetry and GPS are different, you must select the correct ports yourself.

After completing this procedure, you will be able to wirelessly connect to the drone using modems. This will greatly simplify the passage of such important stages of drone configuration as calibration of the accelerometer and compass.

Interested in drones?