> For the complete documentation index, see [llms.txt](https://docs.arkelectron.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.arkelectron.com/products/flight-controller/ark-pixhawk-autopilot-bus-carrier/hardware/pinout.md).

# Pinout

<figure><img src="https://1515919775-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwmEn1N45AR4WjMQhHlu%2Fuploads%2ForNJ8Yz3AJvmcNU7fDwH%2FARK%20PAB%20Carrier%20Board%20Pinout%20Reference%20Poster%20NO%20LOGO.png?alt=media&amp;token=43cbf3b0-8742-42f3-8482-2104a0519191" alt=""><figcaption></figcaption></figure>

<figure><img src="https://1515919775-files.gitbook.io/~/files/v0/b/gitbook-x-prod.appspot.com/o/spaces%2FOwmEn1N45AR4WjMQhHlu%2Fuploads%2Fgit-blob-390787d05b3763c7b162b8a8f2fdfd98e9c8afff%2Farkpab_pinout.BbDXBv95.jpg?alt=media" alt=""><figcaption><p>ARK PAB Carrier connector locations</p></figcaption></figure>

### POWER1 — 6-pin 2.00mm Molex [CLIK-Mate 502443](https://www.molex.com/en-us/part-list/502443)

Mating plug [5024390600](https://www.digikey.com/en/products/detail/molex/5024390600/2380425)

Pre-crimped wires [0797581014](https://www.digikey.com/en/products/detail/molex/0797581014/6346648)

| Pin     | Signal    | Voltage |
| ------- | --------- | ------- |
| 1 (red) | `VBRICK1` | +5.0V   |
| 2 (blk) | `VBRICK1` | +5.0V   |
| 3 (blk) | I2C1\_SCL | +3.3V   |
| 4 (blk) | I2C1\_SDA | +3.3V   |
| 5 (blk) | `GND`     | GND     |
| 6 (blk) | `GND`     | GND     |

### POWER2 — 6-pin 2.00mm Molex [CLIK-Mate 502443](https://www.molex.com/en-us/part-list/502443)

Mating plug [5024390600](https://www.digikey.com/en/products/detail/molex/5024390600/2380425)

Pre-crimped wires [0797581014](https://www.digikey.com/en/products/detail/molex/0797581014/6346648)

| Pin     | Signal    | Voltage |
| ------- | --------- | ------- |
| 1 (red) | `VBRICK2` | +5.0V   |
| 2 (blk) | `VBRICK2` | +5.0V   |
| 3 (blk) | I2C2\_SCL | +3.3V   |
| 4 (blk) | I2C2\_SDA | +3.3V   |
| 5 (blk) | `GND`     | GND     |
| 6 (blk) | `GND`     | GND     |

### PWM — 10-pin JST-GH

| Pin      | Signal                     | Voltage |
| -------- | -------------------------- | ------- |
| 1 (red)  | VDD\_SERVO (Not Connected) | +5.0V   |
| 2 (blk)  | FMU\_CH1                   | +3.3V   |
| 3 (blk)  | FMU\_CH2                   | +3.3V   |
| 4 (blk)  | FMU\_CH3                   | +3.3V   |
| 5 (blk)  | FMU\_CH4                   | +3.3V   |
| 6 (blk)  | FMU\_CH5                   | +3.3V   |
| 7 (blk)  | FMU\_CH6                   | +3.3V   |
| 8 (blk)  | FMU\_CH7                   | +3.3V   |
| 9 (blk)  | FMU\_CH8                   | +3.3V   |
| 10 (blk) | `GND`                      | GND     |

### GPS1 — 10-pin JST-GH

| Pin      | Signal                    | Voltage |
| -------- | ------------------------- | ------- |
| 1 (red)  | `VDD_5V_PERIPH`           | +5.0V   |
| 2 (blk)  | USART1\_TX\_GPS1          | +3.3V   |
| 3 (blk)  | USART1\_RX\_GPS1          | +3.3V   |
| 4 (blk)  | I2C1\_SCL                 | +3.3V   |
| 5 (blk)  | I2C1\_SDA                 | +3.3V   |
| 6 (blk)  | nSAFETY\_SWITCH\_IN       | +3.3V   |
| 7 (blk)  | nSAFETY\_SWITCH\_LED\_OUT | +3.3V   |
| 8 (blk)  | `3V3_FMU`                 | +3.3V   |
| 9 (blk)  | BUZZER                    | +5.0V   |
| 10 (blk) | `GND`                     | GND     |

### GPS2 — 6-pin JST-GH

| Pin     | Signal           | Voltage |
| ------- | ---------------- | ------- |
| 1 (red) | `VDD_5V_HIPOWER` | +5.0V   |
| 2 (blk) | UART8\_TX\_GPS2  | +3.3V   |
| 3 (blk) | UART8\_RX\_GPS2  | +3.3V   |
| 4 (blk) | I2C2\_SCL        | +3.3V   |
| 5 (blk) | I2C2\_SDA        | +3.3V   |
| 6 (blk) | `GND`            | GND     |

### TELEM1 — 6-pin JST-GH

| Pin     | Signal           | Voltage |
| ------- | ---------------- | ------- |
| 1 (red) | `VDD_5V_HIPOWER` | +5.0V   |
| 2 (blk) | UART7\_TX        | +3.3V   |
| 3 (blk) | UART7\_RX        | +3.3V   |
| 4 (blk) | UART7\_CTS       | +3.3V   |
| 5 (blk) | UART7\_RTS       | +3.3V   |
| 6 (blk) | `GND`            | GND     |

### TELEM2 — 6-pin JST-GH

| Pin     | Signal          | Voltage |
| ------- | --------------- | ------- |
| 1 (red) | `VDD_5V_PERIPH` | +5.0V   |
| 2 (blk) | UART5\_TX       | +3.3V   |
| 3 (blk) | UART5\_RX       | +3.3V   |
| 4 (blk) | UART5\_CTS      | +3.3V   |
| 5 (blk) | UART5\_RTS      | +3.3V   |
| 6 (blk) | `GND`           | GND     |

### TELEM3 — 6-pin JST-GH

| Pin     | Signal           | Voltage |
| ------- | ---------------- | ------- |
| 1 (red) | `VDD_5V_HIPOWER` | +5.0V   |
| 2 (blk) | USART2\_TX       | +3.3V   |
| 3 (blk) | USART2\_RX       | +3.3V   |
| 4 (blk) | USART2\_CTS      | +3.3V   |
| 5 (blk) | USART2\_RTS      | +3.3V   |
| 6 (blk) | `GND`            | GND     |

### UART4/I2C3 — 6-pin JST-GH

| Pin     | Signal          | Voltage |
| ------- | --------------- | ------- |
| 1 (red) | `VDD_5V_PERIPH` | +5.0V   |
| 2 (blk) | UART4\_TX       | +3.3V   |
| 3 (blk) | UART4\_RX       | +3.3V   |
| 4 (blk) | I2C3\_SCL       | +3.3V   |
| 5 (blk) | I2C3\_SDA       | +3.3V   |
| 6 (blk) | `GND`           | GND     |

### I2C3 — 4-pin JST-GH

| Pin     | Signal          | Voltage |
| ------- | --------------- | ------- |
| 1 (red) | `VDD_5V_PERIPH` | +5.0V   |
| 2 (blk) | I2C3\_SCL       | +3.3V   |
| 3 (blk) | I2C3\_SDA       | +3.3V   |
| 4 (blk) | `GND`           | GND     |

### CAN1 — 4-pin JST-GH

| Pin     | Signal           | Voltage |
| ------- | ---------------- | ------- |
| 1 (red) | `VDD_5V_HIPOWER` | +5.0V   |
| 2 (blk) | CAN1\_H          | +3.3V   |
| 3 (blk) | CAN1\_L          | +3.3V   |
| 4 (blk) | `GND`            | GND     |

### CAN2 — 4-pin JST-GH

| Pin     | Signal          | Voltage |
| ------- | --------------- | ------- |
| 1 (red) | `VDD_5V_PERIPH` | +5.0V   |
| 2 (blk) | CAN2\_H         | +3.3V   |
| 3 (blk) | CAN2\_L         | +3.3V   |
| 4 (blk) | `GND`           | GND     |

### USB — 4-pin JST-GH

All signals in parallel with the USB C connector.

| Pin     | Signal    | Voltage |
| ------- | --------- | ------- |
| 1 (red) | `VBUS_IN` | +5.0V   |
| 2 (blk) | USB\_N    | +3.3V   |
| 3 (blk) | USB\_P    | +3.3V   |
| 4 (blk) | `GND`     | GND     |

### ETH — 4-pin JST-GH

| Pin     | Signal     | Voltage         |
| ------- | ---------- | --------------- |
| 1 (red) | ETH\_RD\_N | +50.0V Tolerant |
| 2 (blk) | ETH\_RD\_P | +50.0V Tolerant |
| 3 (blk) | ETH\_TD\_N | +50.0V Tolerant |
| 4 (blk) | ETH\_TD\_P | +50.0V Tolerant |

### ADIO — 8-pin JST-GH

| Pin     | Signal          | Voltage |
| ------- | --------------- | ------- |
| 1 (red) | `VDD_5V_PERIPH` | +5.0V   |
| 2 (blk) | FMU\_CAP        | +3.3V   |
| 3 (blk) | BOOTLOADER      | +3.3V   |
| 4 (blk) | FMU\_RST\_REQ   | +3.3V   |
| 5 (blk) | nARMED          | +3.3V   |
| 6 (blk) | ADC1\_3V3       | +3.3V   |
| 7 (blk) | ADC1\_6V6       | +3.3V   |
| 8 (blk) | `GND`           | GND     |

### RC/SBUS — 5-pin

| Pin     | Signal               | Voltage |
| ------- | -------------------- | ------- |
| 1 (red) | `VDD_5V_SBUS_RC`     | +5.0V   |
| 2 (blk) | USART6\_RX\_SBUS\_IN | +3.3V   |
| 3 (blk) | USART6\_TX           | +3.3V   |
| 4 (blk) | `VDD_3V3_SPEKTRUM`   | +3.3V   |
| 5 (blk) | `GND`                | GND     |

### PPM — 3-pin JST-GH

| Pin     | Signal                     | Voltage |
| ------- | -------------------------- | ------- |
| 1 (red) | `VDD_5V_PPM_RC`            | +5.0V   |
| 2 (blk) | DSM\_INPUT/FMU\_PPM\_INPUT | +3.3V   |
| 3 (blk) | `GND`                      | GND     |

### DSM — 3-pin JST-ZH

| Pin     | Signal                     | Voltage |
| ------- | -------------------------- | ------- |
| 1 (red) | `VDD_3V3_SPEKTRUM`         | +3.3V   |
| 2 (blk) | `GND`                      | GND     |
| 3 (blk) | DSM\_INPUT/FMU\_PPM\_INPUT | +3.3V   |

### SPI6 — 11-pin JST-GH

| Pin      | Signal          | Voltage |
| -------- | --------------- | ------- |
| 1 (red)  | `VDD_5V_PERIPH` | +5.0V   |
| 2 (blk)  | SPI6\_SCK       | +3.3V   |
| 3 (blk)  | SPI6\_MISO      | +3.3V   |
| 4 (blk)  | SPI6\_MOSI      | +3.3V   |
| 5 (blk)  | SPI6\_nCS1      | +3.3V   |
| 6 (blk)  | SPI6\_nCS2      | +3.3V   |
| 7 (blk)  | SPIX\_nSYNC     | +3.3V   |
| 8 (blk)  | SPI6\_DRDY1     | +3.3V   |
| 9 (blk)  | SPI6\_DRDY2     | +3.3V   |
| 10 (blk) | SPI6\_nRESET    | +3.3V   |
| 11 (blk) | `GND`           | GND     |

### Debug Port — 10-pin JST-SH

The pinouts and connector comply with the [Pixhawk Debug Full](https://docs.px4.io/main/en/debug/swd_debug.html#pixhawk-debug-full) interface defined in the [Pixhawk Connector Standard](https://github.com/pixhawk/Pixhawk-Standards/blob/master/DS-009%20Pixhawk%20Connector%20Standard.pdf) (JST SM10B connector).

| Pin      | Signal           | Voltage |
| -------- | ---------------- | ------- |
| 1 (red)  | `Vtref`          | +3.3V   |
| 2 (blk)  | Console TX (OUT) | +3.3V   |
| 3 (blk)  | Console RX (IN)  | +3.3V   |
| 4 (blk)  | `SWDIO`          | +3.3V   |
| 5 (blk)  | `SWCLK`          | +3.3V   |
| 6 (blk)  | `SWO`            | +3.3V   |
| 7 (blk)  | NFC GPIO         | +3.3V   |
| 8 (blk)  | PH11             | +3.3V   |
| 9 (blk)  | nRST             | +3.3V   |
| 10 (blk) | `GND`            | GND     |


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