The BETAFPV F405 AIO is a flight controller produced by [BETAFPV](https://betafpv.com/collections/brushless-flight-controller/products/f4-1s-12a-aio-brushless-flight-controller-v3-0).
## Features
- MCU: STM32F405RGT6, 168MHz
- Gyro: ICM42688-P
- 16Mb Onboard Flash
- BEC output: 5V, 2A@4V
- Barometer: BMP280
- OSD: AT7456E
- 5 UARTS: (UART1, UART3, UART4, UART5, UART6)
- 5 PWM outputs (4 motor outputs used internally for integrated 4-in-1 ESC and 1 integrated LED)
|SERIAL3|TX3/RX3|UART3 (ELRS, internal - can be freed up through board modifications, see https://betafpv.com/products/f4-2-3s-20a-aio-fc-v1?_pos=1&_sid=a0000be76&_ss=r)
|SERIAL4|TX4/RX4|UART4 (MSP DisplayPort)|
|SERIAL5|RX5|UART5 (SBUS, inverted and connected to RX-only)|
RC input is configured on the on-board ELRS on UART3 or through (UART6_RX/UART6_TX) pins. It supports all serial RC protocols.
## OSD Support
The BETAFPV F405 AIO supports OSD using OSD_TYPE 1 (MAX7456 driver).
## PWM Output
The BETAFPV F405 AIO has 4 PWM outputs internally connected to its 4-in-1 ESC. The pads for motor output are M1 to M4 on the board. All 4 outputs support bi-directional DShot and DShot, as well as all PWM types. The default configuration is for bi-directional DShot using the already installed BlueJay firmware.
The PWM are in in two groups:
- PWM 1-2 in group1
- PWM 3-4 in group2
- PWM 5 in group3
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 sensor and a current sensor input tied to its 4 in 1 ESC current sensor. The voltage sensor can handle up to 6S
LiPo batteries.
The correct battery setting parameters are:
- BATT_MONITOR 4
- BATT_VOLT_PIN 12
- BATT_VOLT_MULT 10.9
- BATT_CURR_PIN 13
- BATT_CURR_MULT 50
These are set by default in the firmware and shouldn't need to be adjusted
## Compass
The BETAFPV F405 AIO does not have a builtin compass.
