Pix32v6 Flight Controller

Pix32v6 is a variant of the Holybro Pixhawk 6C. It is comprised of a separate flight controller and carrier board which are connected by a 100 pin connector. It is designed for those pilots who need a high power, flexible and customizable flight control system.

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Where To Buy

The Pix32v6 autopilots are sold by Holybro

Features of Pixhawk6 Series

(click table below to expand)

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UART Mapping

  • SERIAL0 -> USB

  • SERIAL1 -> UART7 (Telem1) RTS/CTS pins

  • SERIAL2 -> UART5 (Telem2) RTS/CTS pins

  • SERIAL3 -> USART1 (GPS1)

  • SERIAL4 -> UART8 (GPS2)

  • SERIAL5 -> USART2 (Telem3) RTS/CTS pins

  • SERIAL6 -> USART3 (USER)

  • SERIAL7 -> USB (can be used for SLCAN with protocol change)

All UARTs except UART4 have full DMA capability.

RC Input

The RCIN pin, which by default is mapped to a timer input, can be used for all ArduPilot supported receiver protocols, except CRSF/ELRS and SRXL2 which require a true UART connection. However, FPort, when connected in this manner, will only provide RC without telemetry.

To allow CRSF and embedded telemetry available in Fport, CRSF, and SRXL2 receivers, a full UART, such as SERIAL6 (UART3) would need to be used for receiver connections. Below are setups using Serial6.

Any UART can be used for RC system connections in ArduPilot also, and is compatible with all protocols except PPM. See Radio Control Systems for details.

PWM Output

The Pix32v6 supports up to 16 PWM outputs. All 16 outputs support all normal PWM output formats. All FMU outputs (marked “FMU PWM Output”) also support DShot.

The 8 FMU PWM outputs are in 4 groups:

  • PWM 1, 2, 3 and 4 in group1

  • PWM 5 and 6 in group2

  • PWM 7 and 8 in group3

FMU outputs within the same group need to use the same output rate and protocol. If any output in a group uses DShot then all channels in that group need to use DShot.

Battery Monitoring

The board has 2 dedicated power monitor ports with a 6 pin connector. The Pix32v6 uses analog power monitors on these ports.

Compass

The Pix32v6 has a built-in compass. Due to potential interference, the autopilot is usually used with an external I2C compass as part of a GPS/Compass combination.

GPIOs

The 8 FMU PWM outputs can be used as GPIOs (relays, buttons, RPM etc). To use them you need to set the output’s SERVOx_FUNCTION to -1. See GPIOs page for more information.

The numbering of the GPIOs for PIN variables in ArduPilot is:

FMU pins:

  • FMU1 50

  • FMU2 51

  • FMU3 52

  • FMU4 53

  • FMU5 54

  • FMU6 55

  • FMU7 56

  • FMU8 57

Analog inputs

The Pix32v6 has an analog RSSI input pin:

  • Analog 3.3V RSSI input pin = 103

Connectors

Unless noted otherwise all connectors are JST GH

See Pix32v6 pinout

Loading Firmware

The board comes pre-installed with an ArduPilot compatible bootloader, allowing the loading of xxxxxx.apj firmware files with any ArduPilot compatible ground station.

Firmware for these boards can be found here in sub-folders labeled “Pixhawk6C”.

Layout and Dimensions

See Pix32v6 dimensions