mirror of https://github.com/ArduPilot/ardupilot
96 lines
3.5 KiB
Markdown
96 lines
3.5 KiB
Markdown
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# JHEMCU GSF405A AIO Flight Controller
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The JHEMCU GSF405A is a 1-2S Whoop-style (25.5mm x 25.5mm) flight controller featuring the STM32F405OG6 MCU, 4in1 5A ESCs, BMP280 barometer, 8MB flash, and an on-board ExpressLRS 2.4GHz receiver. The board weighs 3.3g, making it suitable for small or lightweight ArduPilot builds.
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https://pyrodrone.com/collections/new-products/products/jhemcu-gsf405a-1s-2s-aio-f4-flight-control-w-5a-esc-elrs-2-4g-rx-25-5-25-5mm
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https://www.racedayquads.com/collections/new-products/products/jhemcu-gsf405a-1-2s-toothpick-whoop-aio-flight-controller-w-8bit-5a-esc-and-elrs-2-4ghz-rx
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### Specs:
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**Flight control parameters**
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* MCU: STM32F405OG6
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* Gyroscope/Accelerometer: MPU6000
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* OSD: AT7456E
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* Barometer: BMP280
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* Black box: 8MB
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* I2C: Support
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* BEC: 5V
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* UART: UART1 (ELRS), UART2 (external RC), UART3, UART4, UART6
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* USB: micro usb
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* Size: 25.5*25.5MM M2
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* Receiver: ELRS (CRSF), TBS (CRSF), SBUS, IBUS, DSM2, DSMX
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* Support programmable LED such as WS2812
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* Support buzzer
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* Built-in voltage and current sensors
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* Weight: 3.3 grams
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**ESC parameters**
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* Support PWM, Oneshot125, Oneshot42, Multishot, Dshot150, Dshot300, Dshot600
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* Input voltage: 1S-2S Lipo
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* Continuous current: 5A
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* Firmware: BLHELI_S S_H_50_REV16_7.HEX
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* *Note* Bidirectional DShot requires [flashing](https://esc-configurator.com/) a compatible ESC firmware (eg [Bluejay](https://github.com/mathiasvr/bluejay))).
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## Pinout
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## UART Mapping
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The UARTs are marked Rn and Tn in the above pinouts. The Rn pin is the
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receive pin for UARTn. The Tn pin is the transmit pin for UARTn.
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|Name|Pin|Function|
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|:-|:-|:-|
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|SERIAL0|COMPUTER|USB|
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|SERIAL1|RX1/TX1|USART1 (DMA) - Used by the on-board ELRS receiver, but TX1/RX1 pads are also available |
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|SERIAL2|TX2/RX2|USART2 |
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|SERIAL3|TX3/RX3|USART3 (DMA) - GPS, located near I2C pads|
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|SERIAL4|TX4/RX4|UART4|
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|SERIAL6|TX6/RX6|USART6 (DMA) - Telemetry|
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## RC Input
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RC input is configured on SERIAL1 (USART1) connected to the ELRS receiver, configured for CRSF with `SERIAL1_PROTOCOL 23`.
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*Note* A different target is available to should you want to run an external receiver on USART2 (RX2/TX2/SBUS). Note that PPM receivers are not supported as there is no timer resource available for this input.
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## OSD Support
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The GSF405A supports OSD using OSD_TYPE 1 (MAX7456 driver).
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## Motor Output
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The built-in ESC is mapped to motor outputs 1-4. Bidirectional DShot is supported (requires flashing the ESC to a BLHeli_S version that supports bdshot, such as Bluejay [esc-configurator.com]).
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## Battery Monitoring
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The board has a built-in voltage and current sensors.
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The correct battery setting parameters are:
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- BATT_MONITOR 4
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- BATT_VOLT_PIN 11
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- BATT_VOLT_SCALE 11
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- BATT_CURR_PIN 13
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- BATT_CURR_SCALE 17
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These are set by default in the firmware and shouldn't need to be adjusted
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## Compass
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The GSF405A does not have a builtin compass, but you can attach an external compass to the I2C pins.
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## LED
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The board includes a LED_STRIP output, which is assigned a timer and DMA. This is the fifth PWM output.
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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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