mirror of https://github.com/ArduPilot/ardupilot
80 lines
2.5 KiB
Markdown
80 lines
2.5 KiB
Markdown
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# JHEMCU H743 HD Flight Controller
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The JHEMCU H743 HD is a flight controller produced by [JHEMCU](https://jhemcu.com/).
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## Features
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- MCU - STM32H743 32-bit processor running at 480 MHz
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- IMU - dual ICM42688P
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- Barometer - DPS310
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- Voltage & current sensor
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- OSD - AT7456E
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- Onboard Flash: 1 Gbits (W25N01G)
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- 7x UARTs (1,2,3,4,5,6,7)
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- 9x PWM Outputs (8 Motor Output, 1 LED)
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- Battery input voltage: 3S-6S
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- BEC 5V/2.5A, 10V/2.0A
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## Pinout
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## UART Mapping
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The UARTs are marked RXn and TXn in the above pinouts. The RXn pin is the
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receive pin for UARTn. The TXn pin is the transmit pin for UARTn.
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In addition to pinouts, the board also has SH6P 1mm connector for DJI FPV and SH8P 1mm connector for 4 in 1 ESC.
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- SERIAL0 -> USB
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- SERIAL1 -> USART1 (DMA-enabled)
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- SERIAL2 -> USART2 (RX/SBUS, DMA-enabled)
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- SERIAL3 -> USART3 (DMA-enabled)
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- SERIAL4 -> UART4 (GPS, DMA-enabled)
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- SERIAL5 -> UART5 (Pins labeled R5 T5)
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- SERIAL6 -> USART6 (DisplayPort, DMA-enabled)
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- SERIAL7 -> UART7 (ESC Telemetry)
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- SERIAL8 -> UART8 (Unused, not tested, no pinout, need to solder direct on precessor pins to utilize if you need just one more UART)
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## RC Input
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RC input is configured on the RX2/TX2 (USART2_RX/USART2_TX) pins. It supports ELRS(CSRF), TBS(CSRF), SBUS, IBUS, DSM2, and DSMX.
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## OSD Support
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JHEMCU H743 supports OSD using OSD_TYPE 1 (MAX7456 driver).
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## PWM Output
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JHEMCU H743 supports up to 9 PWM outputs. 8 motors and 1 LED strip or another PWM output.
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The PWM is in 4 groups:
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- PWM 1 - 4 in group1
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- PWM 5, 6 in group2
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- PWM 7, 8 in group3
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- PWM 9 in group4
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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. Channels 1-8 support bi-directional dshot.
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## Battery Monitoring
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The board has a built-in voltage and current sensor. The current
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sensor's max Amps is not specified. The voltage sensor can handle up to 6S
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LiPo batteries.
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## Compass
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JHEMCU H743 does not have a builtin compass, but you can attach an external compass using I2C on the SDA and SCL pads.
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## Loading Firmware
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Initial firmware load can be done with DFU by plugging in USB with the
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bootloader button pressed. Then you should load the "with_bl.hex"
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firmware, using your favourite DFU loading tool.
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Once the initial firmware is loaded you can update the firmware using
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any ArduPilot ground station software. Updates should be done with the
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*.apj firmware files.
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