Pinout

Pin assignments for the ARK Primary Avionics Adapter connectors.

Primary avionics port

J3 — 40-pin Pico-Clasp primary avionics port

Pin	Signal	Voltage
1	VDD_5V_SBUS_RC	5V
2	IO_SBUS_INPUT_EXT	3.3V
3	GND	GND
4	GND	GND
5	nSAFETY_SWITCH_IN_EXT	3.3V
6	nSAFETY_SWITCH_LED_OUT_EXT	3.3V
7	3V3_FMU	3.3V
8	BUZZER_EXT	24V (Open Drain)
9	UART7_TX_TELEM1_EXT	3.3V
10	UART7_CTS_TELEM1_EXT	3.3V
11	UART7_RX_TELEM1_EXT	3.3V
12	UART7_RTS_TELEM1_EXT	3.3V
13	VDD_5V_HIPOWER	5V
14	GND	GND
15	GND	GND
16	GND	GND
17	GND	GND
18	GND	GND
19	I2C1_SCL_GPS1_EXT	3.3V
20	USART1_RX_GPS1_EXT	3.3V
21	I2C1_SDA_GPS1_EXT	3.3V
22	VDD_5V_PERIPH	5V
23	GND	GND
24	GND	GND
25	FMU_CH1_EXT	3.3V
26	FMU_CH5_EXT	3.3V
27	FMU_CH2_EXT	3.3V
28	FMU_CH6_EXT	3.3V
29	FMU_CH3_EXT	3.3V
30	FMU_CH7_EXT	3.3V
31	FMU_CH4_EXT	3.3V
32	FMU_CH8_EXT	3.3V
33	GND	GND
34	VDD_SERVO_SENSE	9.9V Max
35	CAN1_P	5V
36	GND	GND
37	CAN1_N	5V
38	GND	GND
39	GND	GND
40	GND	GND

RC input

J1 — 3-pin JST-GH

Pin	Signal	Voltage
1	VDD_5V_SBUS_RC	5V
2	IO_SBUS_INPUT_EXT	3.3V
3	GND	GND

TELEM1

J2 — 6-pin JST-GH

Pin	Signal	Voltage
1	VDD_5V_HIPOWER	5V
2	UART7_TX_TELEM1_EXT	3.3V
3	UART7_RX_TELEM1_EXT	3.3V
4	UART7_CTS_TELEM1_EXT	3.3V
5	UART7_RTS_TELEM1_EXT	3.3V
6	GND	GND

GPS1

J4 — 10-pin JST-GH

Pin	Signal	Voltage
1	VDD_5V_PERIPH	5V
2	USART1_TX_GPS1_EXT	3.3V
3	USART1_RX_GPS1_EXT	3.3V
4	I2C1_SCL_GPS1_EXT	3.3V
5	I2C1_SDA_GPS1_EXT	3.3V
6	nSAFETY_SWITCH_IN_EXT	3.3V
7	nSAFETY_SWITCH_LED_OUT_EXT	3.3V
8	BUZZER_EXT	24V (Open Drain)
9	3V3_FMU	3.3V
10	GND	GND

PWM

J5 — 10-pin JST-GH

Pin	Signal	Voltage
1	VDD_SERVO_SENSE	9.9V Max
2	FMU_CH1_EXT	3.3V
3	FMU_CH2_EXT	3.3V
4	FMU_CH3_EXT	3.3V
5	FMU_CH4_EXT	3.3V
6	FMU_CH5_EXT	3.3V
7	FMU_CH6_EXT	3.3V
8	FMU_CH7_EXT	3.3V
9	FMU_CH8_EXT	3.3V
10	GND	GND

CAN1

J6 — 4-pin JST-GH

Pin	Signal	Voltage
1	VDD_5V_HIPOWER	5V
2	CAN1_P	5V
3	CAN1_N	5V
4	GND	GND