Flexi PortCan be disabled, or connected to one of the following::Telemetry, GPS, I2C, DSM, EX.Bus, HoTT, SRXL, IBus, DebugConsole, ComBridge, MSP or MAVLink. Main PortCan also be left disabled, or connected to Telemetry, GPS, S.Bus, DSM, DebugConsole, MSP or MAVLink. With DSM, this means the flight controller can work directly with a Spektrum satellite receiver. MainPort / FlexiPort pinOut| Color | Pin | Electrical limits | Serial function | I2C function | RcInput functions S.Bus, DSM, etc... |
|---|
| Black | 1 | GND | GND | GND | GND | | Red | 2 | 4.8V - 15V10V | PWR Out (VCC Unregulated) | PWR Out (VCC Unregulated) | PWR Out (VCC Unregulated) | | Blue | 3 | 3.3V | TX | SCL |
| | Orange | 4 | 3.3V (5V Tolerant) | RX | SDA | TX (Signal input) |
| 
