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Holybro Pixhawk 6X Pro
by Holybro
Community
Closed Hardware
Four general-purpose serial ports provide three hardware flow-control interfaces plus a combined UART/I2C expansion bus for NFC readers or payloads.
Detailed Specifications
Core Specifications
Quick reference for the primary hardware capabilities.
| MCU | Mounting | Cube Carrier Board | |
| Power | 4.9ā5.5 V ā¢ Power Module | I/O Overview | 8 UARTs ā¢ 1 IĀ²C ā¢ 1 SPI ā¢ 2 CAN |
| PWM & Storage | 16 PWM outputs ā¢ microSD logging | Sensors | 3Ć IMU ā¢ 2Ć Barometer ā¢ 1Ć Magnetometer |
Hardware Overview
Core MCU, mounting, and mechanical data.
Base hardware specification
Default
| MCU | Mounting | Cube Carrier Board |
Power Supply
Input rails, regulators, and redundancy.
Voltage ā
Inputs 4
Redundancy Redundant
Power Inputs
POWER1 Power Module
Connector:
Molex CLIK-Mate 2.0mm 6-pin
Voltage:
4.9ā5.5 V
Primary redundant power module input with SMBus battery telemetry.
POWER2 Power Module
Connector:
Molex CLIK-Mate 2.0mm 6-pin
Voltage:
4.9ā5.5 V
Secondary redundant power module input sharing SMBus battery monitoring.
USB USB
Connector:
USB Type-C
Voltage:
4.75ā5.25 V
SERVO_RAIL Servo Rail
Voltage:
0ā36 V
High-voltage tolerant PWM rail isolated from FMU power domains.
| Input Voltage | ā | Redundancy | ā Yes |
Triple-redundant supply automatically prioritises POWER1/POWER2 before USB; servo rail remains isolated to avoid backfeeding.
Connectivity & I/O
Port availability, buses, and expansion options.
| UARTs | 8 | CAN Bus | 2 |
| PWM Outputs | 16 | SD Card | ā Yes |
| Ethernet | ā Yes | ||
Peripheral Ports
| Port | Type | Default Function | Voltage / Level | Connector | Notes |
|---|---|---|---|---|---|
| TELEM1 | UART | Primary MAVLink telemetry | 3.3 V signal / 5 V @ 1.5 A peripheral power | JST-GH 6-pin | Provides hardware flow control and the highest-current 5 V rail for radios or companion links. |
| TELEM2 | UART | Secondary telemetry or RTK corrections | 3.3 V signal / 5 V supply | JST-GH 6-pin | Full RTS/CTS UART well-suited for long-range radios or RTK base modems. |
| TELEM3 | UART | Payload telemetry or RC backhaul | 3.3 V signal / 5 V supply | JST-GH 6-pin | DMA-enabled serial port commonly reassigned to high-speed peripherals or ELRS receivers. |
| UART4/I2C | UART | Configurable UART with shared I2C for peripherals | 3.3 V signal | JST-GH 6-pin | Labeled UART4 on the AD&IO port; shares pins with auxiliary I2C and GPIO functions. |
| GPS1 | GPS | Primary GPS/compass/safety switch combo | 3.3 V signal / 5 V supply | JST-GH 10-pin | Bundles safety switch, buzzer, and I2C compass with the first GPS receiver. |
| GPS2 | GPS | Secondary GPS | 3.3 V signal / 5 V supply | JST-GH 6-pin | Minimalist GPS connector for redundant navigation receivers or RTK base input. |
| CAN1 | CAN | DroneCAN peripheral bus | Differential CAN / 5 V supply | JST-GH 4-pin | Routed through the baseboard with switchable 5 V feed for smart nodes. |
| CAN2 | CAN | Redundant DroneCAN or ESC network | Differential CAN / 5 V supply | JST-GH 4-pin | Supports CAN-FD devices and ESC RX-MUX functionality. |
| I2C1 | I2C | Auxiliary sensor bus | 3.3 V | JST-GH 4-pin | Dedicated auxiliary I2C port for airspeed, rangefinders, or peripheral hubs. |
| SPI1 | SPI | External payload SPI | 3.3 V | Autopilot Bus SPI header | Provides two chip selects plus sync/reset lines for high-rate payload integration. |
| AD&IO | PWM | Camera trigger or timing capture | 3.3 V signal / 5 V supply | JST-GH 10-pin (AD&IO) | Exposes PWM capture, GPIO, and voltage reference on the accessory port. |
| RCIN | RC | Primary receiver input (PPM/S.Bus/DSM) | 3.3 V signal / 5 V supply | JST-GH 6-pin | Timer-based input with dedicated RSSI pin for legacy receivers. |
| S.BUS OUT / RSSI | RC | S.Bus out and analog RSSI | 3.3 V signal | JST-GH 3-pin | Allows redundant receivers or servo expanders with analog RSSI monitoring. |
| FMU PWM OUT (1-8) | PWM | Primary motor outputs | Servo rail (0-36 V tolerant) | Servo rail bank A | DShot-capable FMU-controlled outputs grouped for synchronous protocols. |
| IO PWM OUT (9-16) | PWM | Auxiliary/IO motor outputs | Servo rail (0-36 V tolerant) | Servo rail bank B | IOMCU-managed outputs for flight controls, retracts, or camera gimbals. |
| POWER1 | Power | Primary power module input | 4.9-5.5 V | Molex CLIK-Mate 2.0mm 6-pin | Provides SMBus telemetry and redundant 5 V supply from the first power module. |
| POWER2 | Power | Secondary power module input | 4.9-5.5 V | Molex CLIK-Mate 2.0mm 6-pin | Independent redundant supply supporting SMBus smart battery modules. |
| SERVO RAIL | Power | High-voltage servo bus | 0-36 V tolerant | Servo rail bus | Isolated from FMU logic supply; do not backfeed the redundant power circuits. |
| USB-C | USB | Console and firmware updates | 5 V | USB Type-C | Provides SERIAL0 console access and bootloader flashing capability. |
| Ethernet | Ethernet | 100 Mbps companion link | 3.3 V logic | Pixhawk Autopilot Bus Ethernet header | Requires compatible baseboard breakout for RJ45 connection. |
| FMU Debug | Debug | SWD + system console | 3.3 V | JST SM10B (Pixhawk Debug Full) | Combined SWD/JTAG and serial console for firmware development and diagnostics. |
Onboard Sensors
IMU, barometer, and magnetometer load-outs per revision.
| IMU | |||
| Barometer | |||
| Magnetometer | |||
Additional Features
Value-add capabilities bundled with the controller.
- ā Triple-redundant IMU architecture with independent power domains and temperature control.
- ā Integrated Ethernet interface for companion computers via Pixhawk Autopilot Bus baseboards.
- ā Modular core/baseboard split compatible with Pixhawk Autopilot Bus standard accessories.
Known Issues & Advisories
No documented issues for Base Hardware
Sensor advisories and controller errata for this revision will appear here once reported.
Documentation & Vendor Resources
Contributors: Jairus
Last updated:
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