NP-FCC-H05 Navigation Flight Control Computer

The NP-FCC-H05 is a high-performance, industrial-grade, integrated navigation and flight control product developed by the NextPilot team. It carries a high-performance, dual-redundant, internally damped inertial measurement unit (IMU), featuring high reliability, good stability and strong vibration resistance. It adopts self-developed navigation algorithms and loss-of-control protection strategies, delivering high positioning accuracy and strong anti-interference capability. It integrates powerful functions including moving-platform takeoff and landing, visual navigation and swarm formation flight, and provides an external flight control interface for secondary development to meet application development needs in various scenarios. The product applies to 10 kg~300 kg class UAV platforms of all types, including multirotor, fixed-wing, VTOL and tilt-rotor aircraft. Paired with a professional ground control station, it provides powerful flight functions and safe flight assurance.

Product Features

• Dual main processors, with flight control and navigation separated architecturally
• Built-in high-performance IMU, installable without extra damping
• Built-in high-performance navigation board
• Moving platform support
• Compliant with relevant GJB standards

Main Functions

The main functions of the navigation flight control computer are:

• Supports multiple vehicle types, including multirotor, fixed-wing and VTOL;
• Provides manual, altitude hold, position hold, acro, hover, mission, external control, autonomous takeoff and landing, return-to-launch and other flight modes;
• Provides emergency protection logic including data link loss protection, satellite signal loss protection, engine failure protection, low voltage warning and protection;
• Supports remote takeoff and landing;
• Provides geofence functionality;
• Supports hardware-in-the-loop and software-in-the-loop simulation;
• Supports multi-vehicle control;
• Supports multi-level formation;
• Broadly supports satellite navigation boards, including Novatel (OEM718D), Unicore (UM482, UM982) and others;
• Carries a high-precision industrial-grade IMU, requiring no external damping;
• Supports firmware upgrade over a serial port;
• Supports log recording and replay (PX4 log format);
• Supports software version query.

Specifications

Main Performance

The performance indicators of the navigation flight control computer are as follows:

• Supply voltage: DC 9~36 V;
• Power consumption: < 12 W;
• Startup time: no more than 40 s;
• Altitude control accuracy: < 1 m;
• Serial ports: 8 channels;
• PWM channels: 16;
• DO: 4 channels;
• ADC inputs: 4 channels;
• Gyroscope: measurement range ±400 °/s, gyro bias 20 °/h (1σ);
• Accelerometer: measurement range ±10 g, accelerometer bias 1 mg;
• Operating temperature: -40 °C ~ 75 °C;
• Storage temperature: -45 °C ~ 80 °C;
• High and low temperature operation, vibration, shock and electromagnetic compatibility comply with GJB requirements.

Dimensions and Weight

• Dimensions: ≤ 112 mm × 72 mm × 42 mm (L × W × H);
• Weight: 400 g;
• Mounting hole diameter 4 mm, spacing 107 mm × 87 mm.

Electrical Interfaces

The flight controller provides two SMA connectors for dual antenna connection: the right one is the main antenna connector and the left one is the auxiliary antenna connector. An aviation connector, model J30J-144ZKW-J, is provided; the interface layout is shown below.

Pin Definition

The flight controller connector model is J30J-144ZKW-J; the pin definitions are as follows:

No.	Pin	Signal	Description	External device (reference)
1	2	Power-VCC	Power input positive (DC 9~36 V)
2	3	Power-VCC
3	4	Power-VCC
4	38	Power-GND	Power input negative (DC 9~36 V)
5	39	Power-GND
6	40	Power-GND
7	1	EARTH	Chassis ground
8	74	BATT1_VOL	Voltage sensing	Traction battery VCC pin
9	75	BATT1_CUR	Current sensing
10	76	BATT1_GND	ADC1 ground
11	109	ADC1_SPARE_1	ADC input
12	110	ADC1_SPARE_2	ADC input
13	111	ADC_GND	ADC2 ground
14	5	FCS_DO1	FCS board - DO1	Integrated starter/generator, engine start switch
15	6	FCS_DO2	FCS board - DO2	Integrated starter/generator, generation control
16	7	FCS_DO3	FCS board - DO3	Integrated starter/generator, fuel pump switch
17	8	FCS_DO4	FCS board - DO4	Payload power control switch
18	14	DO_GND	GND2
19	41	FCS_ETH_RXN	FCS board Ethernet (currently unused)	Airborne network device
20	42	FCS_ETH_RXP	FCS board Ethernet (currently unused)
21	43	FCS_ETH_TXN	FCS board Ethernet (currently unused)
22	44	FCS_ETH_TXP	FCS board Ethernet (currently unused)
23	45	GND2	GND2
24	51	FCS_CH1	PWM output CH1	VTOL (front-right motor), multirotor (motor 1)
25	52	FCS_CH2	PWM output CH2	VTOL (rear-left motor), multirotor (motor 2)
26	53	FCS_CH3	PWM output CH3	VTOL (front-left motor), multirotor (motor 3)
27	54	FCS_CH4	PWM output CH4	VTOL (rear-right motor), multirotor (motor 4)
28	55	FCS_CH5	PWM output CH5	VTOL (front puller motor), multirotor (motor 5)
29	56	FCS_CH6	PWM output CH6	Multirotor (motor 6)
30	57	FCS_CH7	PWM output CH7
31	58	FCS_CH8	PWM output CH8
32	15	FCS_CH_GND1	GND2
33	16	FCS_CH_GND2	GND2
34	17	FCS_CH_GND3	GND2
35	18	FCS_CH_GND4	GND2
36	87	FCS_CH9	PWM output CH9	VTOL (left aileron servo)
37	88	FCS_CH10	PWM output CH10	VTOL (right aileron servo)
38	89	FCS_CH11	PWM output CH11	VTOL (elevator / left V-tail servo)
39	90	FCS_CH12	PWM output CH12	VTOL (rudder / right V-tail servo)
40	91	FCS_CH13	PWM output CH13
41	92	FCS_CH14	PWM output CH14
42	93	FCS_CH15	PWM output CH15
43	94	FCS_CH16	PWM output CH16	VTOL (engine throttle)
44	19	FCS_CH_GND5	GND2
45	20	FCS_CH_GND6	GND2
46	21	FCS_CH_GND7	GND2
47	22	FCS_CH_GND8	GND2
48	83	RC_5V_OUT	Receiver 5 V supply	FUTABA receiver
49	85	RC_SBUS_IN	FCS serial port 8, SBUS input	FUTABA receiver
50	84	RC_SBUS_OUT	FCS serial port 8, SBUS output
51	82	RC_GND	GND2
52	47	SAFETY_5V_OUT	5V_ISO	Safety switch supply pin
53	48	SAFETY_SW_LED		Breathing LED pin
54	49	SAFETY_SWITCH		Safety switch button pin
55	50	BUZZER		External buzzer
56	46	SAFETY_GND	GND2
57	118	I2C1_5V_OUT	5V_ISO
58	119	FCS_IIC_SDA
59	120	FCS_IIC_SCL
60	86	FCS_IIC_GND	GND2
61	121	INS_IIC_SDA
62	122	INS_IIC_SCK
63	95	INS_IIC_GND	GND2
64	139	FCS_CAN1_H	FCS_CAN1
65	140	FCS_CAN1_L
66	141	INS_CAN1_H	INS_CAN1
67	142	INS_CAN1_L
68	101	FCS_RS232_RX1	FCS board serial port 5 (RS232)	Engine
69	102	FCS_RS232_TX1
70	103	FCS_RS232_GND
71	66	FCS_RS232_RX2	FCS board serial port 6 (RS232)	Gimbal
72	67	FCS_RS232_TX2
73	68	FCS_RS232_GND
74	117	FCS_RS232_RX3	FCS board serial port 7 (RS232)
75	116	FCS_RS232_TX3
76	81	FCS_RS232_GND
77	123	FCS_RS422_A1	FCS board serial port 1 (RS422)	Primary data link
78	124	FCS_RS422_B1
79	125	FCS_RS422_Y1
80	126	FCS_RS422_Z1
81	127	FCS_RS422_A2	FCS board serial port 2 (RS422)	Secondary data link
82	128	FCS_RS422_B2
83	129	FCS_RS422_Y2
84	130	FCS_RS422_Z2
85	105	FCS_CAN2_H	FCS board CAN2
86	106	FCS_CAN2_L
87	104	FCS_CAN2_GND
88	70	INS_RS232_RX1	INS board serial port 7
89	71	INS_RS232_TX1
90	69	INS_RS232_GND2
91	131	FCS_RS422_A3	FCS board serial port 3 (RS422)	Airborne computer for external control
92	132	FCS_RS422_B3
93	133	FCS_RS422_Y3
94	134	FCS_RS422_Z3
95	135	FCS_RS422_A4	FCS board serial port 4 (RS422), debug print	FCS board debug serial port, debugging laptop
96	136	FCS_RS422_B4
97	137	FCS_RS422_Y4
98	138	FCS_RS422_Z4
99	112	FCS_USB_VCC	FCS board USB, firmware flashing and log download	Debugging laptop
100	113	FCS_USB_DP
101	114	FCS_USB_DM
102	115	FCS_USB_GND
103	78	INS_USB_DP	INS board USB, firmware flashing	Debugging laptop
104	77	INS_VBUS
105	79	INS_USB_DM
106	80	INS_USB_GND
107	11	GPS_RS232_TX
108	12	GPS_RS232_RX	RTCA/RTCM data input	Data link transparent serial port
109	9	GPS_EVENT
110	10	GPS_PPS
111	13	GND2	GND2
112	28	INS_RS422_A1	INS board serial port 1 (RS422)	Airspeed sensor
113	29	INS_RS422_B1
114	30	INS_RS422_Y1
115	31	INS_RS422_Z1
116	32	INS_RS422_A2	INS board serial port 2 (RS422)	Fiber optic INS
117	33	INS_RS422_B2
118	34	INS_RS422_Y2
119	35	INS_RS422_Z2
120	72	INS_RS422_A3	INS board serial port 3 (RS422)	Military GNSS / IMU debugging
121	36	INS_RS422_B3
122	73	INS_RS422_Y3
123	37	INS_RS422_Z3
124	143	INS_RS422_A4	INS board serial port 4 (RS422), debug serial port	INS debug serial port
125	107	INS_RS422_B4
126	144	INS_RS422_Y4
127	108	INS_RS422_Z4
128	27	FCS_CAP4
129	26	FCS_CAP5
130	25	FCS_CAP6
131	24	FCS_CAP7
132	23	CAP_GND
133	96	N/A
134	97	N/A
135	98	N/A
136	99	N/A
137	100	GND2
138	59	GND2
139	60	GND2
140	61	GND2
141	62	GND2
142	63	GND2
143	64	GND2
144	65	GND2

Downloads

The NP-FCC-H05 series flight controller uses two STM32H7 main control chips, running the flight control program and the inertial navigation program respectively. Therefore two firmware images are provided (flight control firmware and navigation firmware): the flight control firmware must be downloaded through FCS-USB and the navigation firmware through AHRS-USB.

WARNING

Since the two main control chips are identical, they are easy to confuse. Pay close attention before downloading and select the correct USB port according to the firmware type!!! Refer to the product description for how the two USB ports are connected.

Flight Control Firmware

Choose the firmware according to your scenario. The following are the latest firmware images (flashed through the FCS-USB port); see the release notes for historical firmware.

• Real flight firmware: fcs-v4-default.bin

• Hardware-in-the-loop firmware HITL: fcs-v4-default-hitl.bin

• Software-in-the-loop firmware SITL: fcs-v4-sitl-qemu.bin

Navigation Firmware

The following is the latest firmware (flashed through the AHRS-USB port); see the release notes for historical firmware.

• Integrated navigation firmware: ins-v4-default.bin

Bootloader Firmware

The bootloader is shared by the FCS and INS chips and is flashed using Stlink or jlink:

• Bootloader firmware: bl-fcs-ins.bin

Accessories

Debug Board

The debug cable shipped with the navigation flight control computer is shown below: