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| Flexi PortCan be disabled, or connected to one of the following: GPS, Telemetry, I2C, OsdHk or a Debug Console. Main PortCan be left disabled, or connected to telemetry, GPS or a Debug Console. I2C PortCan be disabled, or used as I2C port. Made flexiPort free for other usage.
This port is available in a back side of the flight controller. MainPort / FlexiPort / I2CPort pinOut| Color | Pin | Electrical limits | Serial function | I2C function |
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| Black | 1 | GND | GND | GND | | Red | 2 | 4.8V - 15V | PWR Out (VCC Unregulated) | PWR Out (VCC Unregulated) | | Blue | 3 | 3.3V | TX | SCL | | Orange | 4 | 3.3V (5V Tolerant) | RX | SDA |
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| The LED port provides buffered outputs that can be used for led or brushed motors. See the Sparky2 page in Taulabs wiki for more details. The normal PWM output signal can be picked before the mosfets for servo or Esc usage. |
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Power Port
| JST connector | Connector pin (board) | Description |
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 Image Modified | 1 | GND |
| 2 | Ana / DAC |
| 3 | Current Input |
| 4 | Voltage Input |
See the Configure a Current-Voltage sensor page for more details.
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