Ports & Buttons

Config Button

Holding this button while powering-up the radio will boot the unit into COMMAND mode: the default serial interface will be active and temporarily set to operate at its default serial settings of 9600/8/N/1.

USB

USB TypeC Port. Internal USB to Serial Converter. The USB port of Holybro P900 Radio is different from MicroHard P900 Enclosed. The USB port of P900 Enclosed provides access to the Diagnostic Port. But Holybro P900 Radio’s USB port Provides access to the Serial data Port. That means you can connect Holybro P900 Radio to your ground station via USB port directly. USB Vbus only power the USB to Serial chip, and don’t power the Radio.

Data Port

6-position JST-GH. Data Port is used to connect to the telemetry port of a flight controller. When USB TypeC port don’t connect, this connector connects to the Serial data Port automatically. When USB TypeC is pluged in, this connector is floating. Data Port don’t power the Radio.

Diagnostic Port

4-position JST SH. This connector connects to the Diagnostic Port. If you use PicoConfig application or special diagnostic commands to config the Radio, you should connect to this port. Diagnostic Port is 3.3V logic level compatibility. A USB to Serial board is needed for connecting the radio to your computer.

Power Port

4-position JST-GH. The input Voltage range is 7-35 Vdc. The Radio is powered by the Power Port only. Please connect the power supply when in use and configuration.
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Config Button
USB
Data Port
Diagnostic Port
Power Port