Pixhawk Baseboard Ports
Compatible with Pixhawk 5X & 6X
This baseboard is compatible with both Pixhawk 5X & 6X, and any flight controller that follow the Pixhawk Autopilot Bus Standard.

Refer to this diagram for location of pin1. All connectors are JST GH 1.25 mm Pitch unless noted otherwise.

Power1 (Main) & Power2 Port (Backup) (2.00mm Pitch CLIK-Mate)
Pin | Signal | Volt |
1(red) | VDD5V_BRICK1/2 | +5V |
2(black) | VDD5V_BRICK1/2 | +5V |
3(black) | SCL1/2 | +3.3V |
4(black) | SDA1/2 | +3.3V |
5(black) | GND | GND |
6(black) | GND | GND |
Telem1, Telem2, Telem3 ports
Pin | Signal | Volt |
1(red) | VCC | +5V |
2(black) | TX7/5/2 (out) | +3.3V |
3(black) | RX7/5/2 (in) | +3.3V |
4(black) | CTS7/5/2 (in) | +3.3V |
5(black) | RTS7/5/2 (out) | +3.3V |
6(black) | GND | GND |
GPS 1 Port
Pin | Signal | Volt |
1(red) | VCC | +5V |
2 black) | TX1(out) | +3.3V |
3(black) | RX1(in) | +3.3V |
4(black) | SCL1 | +3.3V |
5(black) | SDA1 | +3.3V |
6(black) | SAFETY_SWITCH | +3.3V |
7(black) | SAFETY_SWITCH_LED | +3.3V |
8(black) | VDD_3V3 | +3.3V |
9(black) | BUZZER- | 0~5V |
10(black) | GND | GND |
GPS 2 Port
Pin | Signal | Volt |
1(red) | VCC | +5V |
2 black) | TX8(out) | +3.3V |
3(black) | RX8(in) | +3.3V |
4(black) | SCL2 | +3.3V |
5(black) | SDA2 | +3.3V |
6(black) | GND | GND |
CAN1, CAN2 ports
Pin | Signal | Volt |
1(red) | VCC | +5V |
2(black) | CANH1/2 | +3.3V |
3(black) | CANL1/2 | +3.3V |
4(black) | GND | GND |
Uart4 & I2C port
Pin | Signal | Volt |
1(red) | VCC | +5V |
2(black) | TX4(out) | +3.3V |
3(black) | RX4(in) | +3.3V |
4(black) | SCL3 | +3.3V |
5(black) | SDA3 | +3.3V |
6(black) | NFC_GPIO | +3.3V |
7(black) | GND | GND |
SPI Port
Pin | Signal | Volt |
1(red) | VCC | +5V |
2 (black) | SPI6_SCK | +3.3V |
3(black) | SPI6_MISO | +3.3V |
4(black) | SPI6_MOSI | +3.3V |
5(black) | SPI6_CS1 | +3.3V |
6(black) | SPI6_CS2 | +3.3V |
7(black) | SPIX_SYNC | +3.3V |
8(black) | SPI6_DRDY1 | +3.3V |
9(black) | SPI6_DRDY2 | +3.3V |
10(black) | SPI6_nRESET | +3.3V |
11(black) | GND | GND |
USB Port
Pin | Signal | Volt |
1(red) | VBUS | +5V |
2(black) | DM | +3.3V |
3(black) | DP | +3.3V |
4(black) | GND | GND |
I2C Port
Pin | Signal | Volt |
1(red) | VCC | +5V |
2(black) | SCL3 | +3.3V |
3(black) | SDA3 | +3.3V |
4(black) | GND | GND |
ETH Port
Pin | Signal | Volt |
1(red) | RXN | +3.3V |
2(black) | RXP | +3.3V |
3(black) | TXN | +3.3V |
4(black) | TXP | +3.3V |
AD&IO Port
Pin | Signal | Volt |
1(red) | VCC | +5V |
2(black) | FMU_CAP1 | +3.3V |
3(black) | FMU_BOOTLOADER | +3.3V |
4(black) | FMU_RST_REQ | +3.3V |
5(black) | NARMED | +3.3V |
6(black) | ADC1_3V3 | +3.3V |
7(black) | ADC1_6V6 | +6.6V |
8(black) | GND | GND |
DSM RC Port (JST-ZH 1.5mm Pitch)
Pin | Signal | Volt |
1(yellow) | VDD_3V3_SPEKTRUM | +3.3V |
2(black) | GND | GND |
3(gray) | DSM/SPEKTRUM IN | +3.3V |
RC IN Port
Pin | Signal | Volt |
S | SBUS/PPM in | +3.3V |
+ | VDD_5V _RC | +5V |
- | GND | GND |
IO Debug Port (JST-SH 1mm Pitch)
Pin | Signal | Volt |
1(red) | IO_VDD_3V3 | +3.3V |
2 black) | IO_USART1_TX | +3.3V |
3(black) | NC | -- |
4(black) | IO_SWD_IO | +3.3V |
5(black) | IO_SWD_CK | +3.3V |
6(black) | IO_SWO | +3.3V |
7(black) | IO_SPARE_GPIO1 | +3.3V |
8(black) | IO_SPARE_GPIO2 | +3.3V |
9(black) | IO_nRST | +3.3V |
10(black) | GND | GND |
FMU Debug Port (JST-SH 1mm Pitch)
Pin | Signal | Volt |
1(red) | FMU_VDD_3V3 | +3.3V |
2 black) | FMU_USART3_TX | +3.3V |
3(black) | FMU_USART3_RX | +3.3V |
4(black) | FMU_SWD_IO | +3.3V |
5(black) | FMU_SWD_CK | +3.3V |
6(black) | SPI6_SCK_EXTERNAL1 | +3.3V |
7(black) | NFC_GPIO | +3.3V |
8(black) | PH11 | +3.3V |
9(black) | FMU_nRST | +3.3V |
10(black) | GND | GND |
RSSI Port
Pin | Signal | Volt |
S | SBUS_OUT/RSSI_IN | +3.3V |
+ | VDD_SERVO | 0~36V |
- | GND | GND |
FMU PWM OUT Port
Pin | Signal | Volt |
S | FMU_CH1~8 | +3.3V |
+ | VDD_SERVO | 0~36V |
- | GND | GND |
I/O PWM OUT Port
Pin | Signal | Volt |
S | IO_CH1~8 | +3.3V |
+ | VDD_SERVO | 0~36V |
- | GND | GND |
Last modified 8mo ago