mirror of https://github.com/ArduPilot/ardupilot
93 lines
2.8 KiB
Markdown
93 lines
2.8 KiB
Markdown
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# iFlight BLITZ F745 Flight Controller
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https://shop.iflight.com/electronics-cat27/BLITZ-F745-Flight-Controller-Pro2141
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The BLITZ F745 is a flight controller produced by [iFlight](https://shop.iflight-rc.com/).
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## Features
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- MCU: BGA-STM32F745, 216MHz
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- Gyro: ICM42688
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- 32Mbytes Onboard Flash
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- BEC output: 5V 2.5A
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- Barometer: DPS310
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- OSD: AT7456E
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- 6 UARTS: (UART1, UART2, UART3, UART4, UART5, UART6)
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- I2C for external compass.
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- 9 PWM outputs (8 motor outputs and 1 LED output)
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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|UART1 (DJI connector)|
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|SERIAL2|TX2/RX2|UART2 (RX, DMA-enabled)|
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|SERIAL3|TX3/RX3|UART3 (GPS, DMA-enabled)|
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|SERIAL4|TX4/RX4|UART4|
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|SERIAL5|TX5/RX5|UART5|
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|SERIAL6|RX6|UART6 (ESC telemetry)|
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Note:UART3 is used for GPS not UART4 as shown in typical wiring diagram
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## RC Input
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RC input is configured on the (UART2_RX/UART2_TX). It supports all serial RC protocols.
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## OSD Support
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The BLITZ F745 supports OSD using OSD_TYPE 1 (MAX7456 driver).
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## PWM Output
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The BLITZ F745 has 9 PWM outputs. The pads for motor output are M1 to M8 on the board and M1-M4 are also in the ESC connector housing. All 9 outputs support DShot and the first four outputs support bi-directional DShot as well as all PWM types. Output 9 is the "LED" pin and is configured for serial LED by default.
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The PWM are in three groups:
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- PWM 1-4 in group1
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- PWM 5-8 in group2
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- PWM 9 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 builtin voltage sensor and a current sensor input tied to its 4 in 1 ESC current sensor. 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 12
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- BATT_VOLT_MULT 11
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- BATT_CURR_PIN 13
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- BATT_CURR_MULT 50
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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 BLITZ F745 does not have a builtin compass, but you can attach an external compass to I2C pins.
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## NeoPixel LED
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The board includes a NeoPixel LED on the underside which is pre-configured to output ArduPilot sequences. 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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