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# KakuteF4 Mini Flight Controller |
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http://www.holybro.com/product/kakute-f4-v2-mini/ |
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The KakuteF7 Mini is a flight controller produced by [Holybro](http://www.holybro.com/product/kakute-f4-v2-mini/). |
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## Features |
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- STM32F405 microcontroller |
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- MPU6000 IMU |
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- BMP280 barometer |
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- 128Mbit dataflash |
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- MAX7456 OSD |
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- 5 UARTs |
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- 7 PWM outputs (2 unallocated) |
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### KakuteF4 Mini Pinout |
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![KakuteF4 Mini Board](kakutef4mini.jpg "KakuteF4 Mini") |
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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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- SERIAL0 -> USB |
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- SERIAL1 -> UART1 (Transmit only, FrSky) |
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- SERIAL3 -> UART3 (RC Input) |
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- SERIAL4 -> UART4 (GPS/Telem1) |
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- SERIAL5 -> UART5 (Receive only, ESC Telemetry) |
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- SERIAL6 -> UART6 (GPS2/Telem2) |
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## ESC Telemetry |
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The SERIAL5 port (UART5) is for ESC telemetry. It is connected through the |
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motor connector and works out of the box with the [Tekko32 F3 Mini](https://shop.holybro.com/tekko32-f3-4in1-45a-mini-esc_p1132.html) which is commonly paired with this flight controller |
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## RC Input |
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RC input is configured on the R3 (UART3_RX) pin. It supports all serial RC protocols. |
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## FrSky Telemetry |
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FrSky Telemetry is supported using the T1 pin (UART1 transmit). You need to set the following parameters to enable support for FrSky S.PORT |
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## OSD Support |
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The KakuteF7 Mini supports OSD using OSD_TYPE 1 (MAX7456 driver). |
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## PWM Output |
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The KakuteF4 supports up to 7 PWM outputs, but only 5 can currently be used. M1 to M4 are accessed via the connector. PWM5 is used for LED output. M1-M4 support bi-directional dshot. |
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The PWM is in 3 groups: |
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- PWM 1 and 2 in group1 |
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- PWM 3 and 4 in group2 |
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- PWM 5 in group3 |
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Channels within the same group need to use the same output rate. If |
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any channel in a group uses DShot then all channels in the group need |
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to use DShot. |
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## Battery Monitoring |
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The board has a builting voltage and current sensor. The current |
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sensor can read up to 130 Amps. The voltage sensor can handle up to 6S |
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LiPo batteries. |
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The correct battery setting parameters are: |
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- BATT_MONITOR 4 |
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- BATT_VOLT_PIN 13 |
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- BATT_CURR_PIN 12 |
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- BATT_VOLT_MULT 10.9 |
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- BATT_AMP_PERVLT 28.5 |
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## Compass |
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The KakuteF7 Mini 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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Note that this hardware has problems going into DFU mode if a GPS is connected and powered - please disconnect your GPS when flashing for the first time. |
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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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# setup for LEDs on chan5 |
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SERVO5_FUNCTION 120 |
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NTF_LED_TYPES 257 |
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SERIAL3_BAUD 115 |
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SERIAL5_BAUD 115 |
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# default Serial1 to FrSky telemetry |
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SERIAL1_PROTOCOL 10 |
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SERIAL1_OPTIONS 7 |
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# hw definition file for processing by chibios_pins.py |
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# for Holybro KakuteF4 Mini bootloader |
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include ../KakuteF4/hwdef-bl.dat |
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undef APJ_BOARD_ID |
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APJ_BOARD_ID 146 |
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# hw definition file for processing by chibios_pins.py |
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# for Holybro KakuteF4 v2 Mini hardware. |
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@ thanks to betaflight for pin information |
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include ../KakuteF4/hwdef.dat |
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undef APJ_BOARD_ID |
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undef PB0 PB1 PA3 PA2 PB11 PB10 PD2 PC8 |
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undef BOARD_PWM_COUNT_DEFAULT |
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undef SERIAL_ORDER |
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undef CH_CFG_ST_RESOLUTION |
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undef STM32_ST_USE_TIMER |
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undef HAL_SERIAL2_PROTOCOL |
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APJ_BOARD_ID 146 |
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# use natural UART order to align with docs |
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SERIAL_ORDER OTG1 USART1 EMPTY EMPTY USART3 UART4 UART5 USART6 |
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# RC input defaults to UART to allow for bi-dir dshot |
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# also frees up 32-bit TIM2 for system timer |
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PB11 USART3_RX USART3 |
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PB10 USART3_TX USART3 |
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define HAL_SERIAL3_PROTOCOL SerialProtocol_RCIN |
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define HAL_SERIAL5_PROTOCOL SerialProtocol_ESCTelemetry |
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q |
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# UART5 (ESC telemetry sensor), SERIAL5, NODMA for bi-dir dshot |
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PD2 UART5_RX UART5 NODMA |
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# Motors, bi-directional dshot capable |
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PB0 TIM3_CH3 TIM3 PWM(1) GPIO(50) BIDIR |
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PB1 TIM3_CH4 TIM3 PWM(2) GPIO(51) |
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PA3 TIM5_CH4 TIM5 PWM(3) GPIO(52) BIDIR |
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PA2 TIM5_CH3 TIM5 PWM(4) GPIO(53) |
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PC8 TIM8_CH3 TIM8 PWM(5) GPIO(56) # LED strip |
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DMA_PRIORITY ADC* USART3* TIM3* TIM5* SPI3* SPI1* |
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DMA_NOSHARE SPI3_RX |
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define BOARD_PWM_COUNT_DEFAULT 5 |
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define STM32_PWM_USE_ADVANCED TRUE |
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# save some flash |
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define HAL_BATTMON_SMBUS_ENABLE 0 |
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define HAL_BATTMON_FUEL_ENABLE 0 |
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define HAL_PARACHUTE_ENABLED 0 |
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define HAL_SPRAYER_ENABLED 0 |
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define HAL_MOUNT_ENABLED 0 |
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define GENERATOR_ENABLED 0 |
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define AC_OAPATHPLANNER_ENABLED 0 |
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define PRECISION_LANDING 0 |
After Width: | Height: | Size: 54 KiB |
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