History

Peter Barker 6933000395 AP_HAL_ChibiOS: add and use AP_NOTIFY_TONEALARM_ENABLED		2023-04-23 16:24:02 +10:00
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README.md	…
SkystarsH7HD.jpg	…
defaults.parm	…
hwdef-bl.dat	hwdef: stop defining STORAGE_FLASH_PAGE in hwdef-bl.dat	2022-12-05 15:19:52 +11:00
hwdef.dat	AP_HAL_ChibiOS: add and use AP_NOTIFY_TONEALARM_ENABLED	2023-04-23 16:24:02 +10:00

README.md

Skystars H7 Flight Controller

The Skystars H7 is a flight controller produced by Skystars.

Features

STM32H743 microcontroller
BMI270 IMU
BMP280 barometer
AT7456E OSD
6 UARTs
9 PWM outputs

Pinout

UART Mapping

The UARTs are marked RX and TX in the above pinouts. The RX pin is the receive pin for UARTn. The TX pin is the transmit pin for UARTn.

SERIAL0 -> USB
SERIAL1 -> UART1 (Telem1)
SERIAL2 -> UART2 (Telem2)
SERIAL3 -> UART3 (GPS)
SERIAL4 -> UART4
SERIAL5 -> not available
SERIAL6 -> UART6
SERIAL7 -> UART7

RC Input

RC input is configured on the R6 (UART6_RX) pin. It supports all RC protocols. For protocols requiring half-duplex serial to transmit telemetry (such as FPort) you should set BRD_ALT_CONFIG=1 and setup SERIAL6 as an RC input serial port, with half-duplex, pin-swap and inversion enabled.

OSD Support

The Skystars H7 supports OSD using OSD_TYPE 1 (MAX7456 driver).

PWM Output

The Skystars H7 supports up to 9 PWM outputs. The pads for motor output M1 to M8 on the two motor connectors, plus M9 for LED strip or another PWM output.

The PWM is in 5 groups:

PWM 1, 2 in group1
PWM 3, 4 in group2
PWM 5, 6 in group3
PWM 7, 8 in group4
PWM 9 in group5

Channels within the same group need to use the same output rate. If any channel in a group uses DShot then all channels in the group need to use DShot.

Battery Monitoring

The board has a builtin voltage and current sensor. The current sensor can read up to 130 Amps. The voltage sensor can handle up to 6S LiPo batteries.

The correct battery setting parameters are:

BATT_MONITOR 4
BATT_VOLT_PIN 10
BATT_CURR_PIN 11
BATT_VOLT_MULT 10.1
BATT_AMP_PERVLT 17.0

Compass

The Skystars H7 does not have a builtin compass, but you can attach an external compass using I2C on the SDA and SCL pads.

Loading Firmware

Initial firmware load can be done with DFU by plugging in USB with the bootloader button pressed. Then you should load the "with_bl.hex" firmware, using your favourite DFU loading tool.

Once the initial firmware is loaded you can update the firmware using any ArduPilot ground station software. Updates should be done with the *.apj firmware files.