> For the complete documentation index, see [llms.txt](https://docs.holybro.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.holybro.com/autopilot/pixhawk-6c-mini/pixhawk-6c-mini-ports.md). # Pixhawk 6C Mini Ports

Pixhawk 6C Mini (Legacy)

Pixhawk 6C Mini Model A (Current)

{% hint style="info" %} Refer to this diagram for location of pin1. All connectors are JST GH 1.25 mm Pitch unless noted otherwise. {% endhint %} ### **Power1**
PinSignalVoltage
1(red)VDD5V_BRICK1 (in)+5V
2(black)VDD5V_BRICK1 (in)+5V
3(black)CURRENT1+3.3V
4(black)VOLTAGE1+3.3V
5(black)GNDGND
6(black)GNDGND
### **Telem 1 Port**
PinSignalVoltage
1(red)VCC+5V
2(black)UART7_TX(out)+3.3V
3(black)UART7_RX(in)+3.3V
4(black)UART7_CTS(in)+3.3V
5(black)UART7_RTS(out)+3.3V
6(black)GNDGND
### **Telem 2 Port**
PinSignalVoltage
1(red)VCC+5V
2(black)UART5_TX(out)+3.3V
3(black)UART5_RX(in)+3.3V
4(black)UART5_CTS(in)+3.3V
5(black)UART5_RTS(out)+3.3V
6(black)GNDGND
### **GPS 1 Port**
PinSignalVoltage
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)IO_VDD_3V3+3.3V
9(black)BUZZER-0~5V
10(black)GNDGND
### **GPS2 Port**
PinSignalVoltage
1(red)VCC+5V
2 black)UART8_TX(out)+3.3V
3(black)UART8_RX(in)+3.3V
4(black)I2C2_SCL+3.3V
5(black)I2C2_SDA+3.3V
6(black)GNDGND
### **I2C Port** | **Pin** | **Signal** | **Voltage** | | -------- | ----------- | ----------- | | 1(red) | VCC | +5V | | 2(black) | I2C2\_SCL\* | +3.3V | | 3(black) | I2C2\_SDA\* | +3.3V | | 4(black) | GND | GND | ### **CAN1 & CAN2 Port** | **Pin** | **Signal** | **Voltage** | | -------- | ---------- | ----------- | | 1(red) | VCC | +5V | | 2(black) | CAN1\_H | +3.3V | | 3(black) | CAN1\_L | +3.3V | | 4(black) | GND | GND | ### **DSM RC Port** (JST-ZH 1.5mm) | **Pin** | **Signal** | **Voltage** | | --------- | ------------------ | ----------- | | 1(yellow) | VDD\_3V3\_SPEKTRUM | +3.3V | | 2(black) | GND | GND | | 3(gray) | DSM/SPEKTRUM IN | +3.3V | ### **PPM/SBUS RC Port (Legacy)** | **Pin** | **Signal** | **Voltage** | | --------- | ------------------ | ----------- | | 1(null) | VDD\_5V\_PPM\_SBUS | +5V | | 2(yellow) | PPM\&SBUS\_IN | +3.3V | | 3(null) | RSSI\_IN | +3.3V | | 4(red) | (NOT CONNECTED) | -- | | 5(black) | GND | GND | ### RSSI Port | | | | | --- | ------ | ------- | | Pin | Signal | Voltage | | 1 | VDD | +5V | | 2 | RSSI | +3.3V | | 3 | GND | GND | ### RC IN Port | | | | | --- | ------------ | ----- | | Pin | Signal | Volt | | S | SBUS/PPM in | +3.3V | | + | VDD\_5V \_RC | +5V | | - | GND | GND | ### **FMU PWM OUT Port (AUX OUT)** | **Pin** | **Signal** | **Volt** | | ------- | ----------- | ------------------- | | S | FMU\_CH1\~6 | +3.3V (5V with MOD) | | + | VDD\_SERVO | 0\~36V | | - | GND | GND | ### **I/O PWM OUT Port (MAIN OUT)** | **Pin** | **Signal** | **Volt** | | ------- | ---------- | ------------------- | | S | IO\_CH1\~8 | +3.3V (5V with MOD) | | + | VDD\_SERVO | 0\~36V | | - | GND | GND | ### **FMU Debug Port** (JST SH 1mm Pitch)
PinSignalVoltage
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)GNDGND
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