nxt-fc-hardware's Introduction

NxtPX4-Hardware v1.2.0 release

Hardware design for NxPX4

NxtPx4 is designed by HKUST UAV-Group and tested and maitened with HKU Mars-Lab and SYSU Hi-Lab

NxtPx4_Pro version () has 9v 2.5A and 5V 3A peak power output

NxtPx4 version has 5V 3A power output

File tree

NxPx4_Pro/xxx_Vx.x.x_Release：KICAD project

xxxxxxx_production: manufact files for JLC
project_lib: Footprint lib and Symble lib for project

Hardware design information

27mm x 29mm x 8mm

MCU&Sensors&Peripher Device

MCU STM32H743VIH
IMU

IMU SPI BUS

ICM20649 SPI1

ICM-42688-P SPI2

BMI088 SPI3
Baro BMP388
TF-card: SDMMC1
External Flash: QSPI

IMU	SPI BUS
ICM20649	SPI1
ICM-42688-P	SPI2
BMI088	SPI3

Function support

6-CH Dshot 600 support

UART tty-port serial-name mapping

UART	TTY	SerialName	Suggest Funcion
USART1	/dev/ttyS0	SERIAL_GPS1	AUX
USART2	/dev/ttyS1	SERIAL_GPS2	AUX
USART3	/dev/ttyS2	SERIAL_TEL1	ESC report
UART4	/dev/ttyS3	SERIAL_TEL2	Connect with offboard computer
UART5	/dev/ttyS4	SERIAL_RC	Receiver
UART7	/dev/ttyS5	SERIAL_TEL3	AUX

I2C2|SPI4 available
Aux 2 PWM channel available (Heater & RGB & Buzzer control signal)
Buzzer- available
Aux 2 GPIO Available

for more information please reffer to /STM32H743VI_Pin_Out/STM32H743xxx_Pin_out.xlsx

Caution!!!!!!!!

V1.2.0

V1.0.0

In the v1.0.1 design, the original concept was to create an unusual ESC connector in order to prompt users to notice the pinout sequence. However, in practice, the placement of the Rx pin in close proximity to the Vbat pin resulted in MCU damage during power on/off if the cable was not tightly installed (causing a high voltage spark). Realizing this issue, the v1.1.0 design changed the ESC pinout order to address this problem.

If you are using v1.0.1 of the NxtPX4 flight controller (which can be found at the back of the PCB), it is important to pay attention to your connection with the ESC. Specifically, it is recommended that you do not disconnect or connect the NxtPX4 while the ESC is already powered on, as this can cause damage to the flight controller. (v1.0.1 Design)