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242 lines
9 KiB
Markdown
242 lines
9 KiB
Markdown
# Board - Omnibus F4
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* For Omnibus F4 Pro (with BMP280 baro, current sensor and SD Card) use **OMNIBUSF4PRO** target (LED strip on dedicated connection)
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* For Onnibus F4 Pro clones (Banggood, AliExpress, eBay, etc.) use **OMNIBUSF4PRO_LEDSTRIPM5** target (LED strip on M5 pin)
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* For Omnibus F4 Pro Corner use **OMNIBUSF4PRO** target
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* For Omnibus F4 AIO, see targets listed below
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## Features
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* STM32F405 CPU
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* Integrated Accelerometer/Gyro MPU6000 or MPU6500 via SPI bus
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* 6 motor outputs
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* 3-5 UART ports (UART1, UART3, UART6)
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* External I2C bus, pins shared with UART3, cannot be used simultaneously
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* Inverter for SBUS
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* Blackbox via SDCard or integrated 128mbit flash memory
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* BLHeli Passthrough
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* Integrated BEC
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* Buzzer connector
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* Integrated OSD
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## Hardware versions
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### Omnibus F4 v1 - discontinued
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* Linear voltage stabilizer, tends to overheat
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* SBUS inverter connected to UART1
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* PPM and UART1 can be used together when S.BUS jumper is removed (close to PPM/SBUS connector)
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* 128mbit flash memory for Blackbox
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* Uses target **OMNIBUSF4**
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### Omnibus F4 v3 - discontinued
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* Switching voltage regulator - solves problem of overheating BEC
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* SD Card slot instead of flash memory
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* SBUS inverter connected to UART6
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* PPM and UART6 can be used together when S.BUS jumper is removed (close to PPM/SBUS connector)
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* Uses target **OMNIBUSF4V3**
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More target options:
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* OMNIBUSF4V3_S6_SS: Softserial1 on S6
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* OMNIBUSF4V3_S5_S6_2SS: Softserial1 on S5 and Softserial2 on S6
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* OMNIBUSF4V3_S5S6_SS: Softserial1 on S5/RX and S6/TX
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### [Omnibus F4 v4/v5](https://inavflight.com/shop/p/OMNIBUSF4V5)
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* Switching voltage regulator - solves problem of overheating BEC
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* SD Card slot instead of flash memory
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* SBUS inverter connected to UART6
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* PPM and UART6 cannot be used together, there is no jumper to disconnect PPM input from UART6 RX
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* Uses target **OMNIBUSF4V3**
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### Omnibus F4 v6
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* Adds more UARTs (total of 5)
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* Softserial 1 is on TX1 for Smartport
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* Note that in multirotor configuration, servos are not enabled on S5 and S6
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* Uses target **OMNIBUSF4V6**
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For the Omnibus V6 and the Fireworks V2 boards, run the following command in the CLI tab to select the correct accelerometer / gyro:
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set gyro_to_use = 1
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set acc_hardware = auto
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save
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### [Omnibus F4 Pro](https://inavflight.com/shop/p/OMNIBUSF4PRO)
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* Sometimes called Omnibus F4 v2 Pro, but also exists v3, v4 & v5 versions with no functional differences
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* Switching voltage regulator - solves problem of overheating BEC
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* LC filter for camera and VTX
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* SD Card slot instead of flash memory
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* SBUS inverter connected to UART1
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* PPM and UART1 can be used together when S.BUS jumper is removed (close to PPM/SBUS connector)
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* Integrated current meter
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* Uses target **OMNIBUSF4PRO**
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* Omnibus F4 Pro clones (Banggood, AliExpress, eBay, etc.) use **OMNIBUSF4PRO_LEDSTRIPM5** target (LED strip on M5 pin instead of incorrectly wired dedicated connection)
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### Omnibus F4 Pro Corner
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* Switching voltage regulator - solves problem of overheating BEC
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* LC filter for camera and VTX
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* SD Card slot instead of flash memory
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* SBUS inverter connected to UART3
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* Integrated current meter
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* Uses target **OMNIBUSF4PRO**
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### Omnibus F4 Nano V6
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* Switching voltage regulator - solves problem of overheating BEC
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* SPI flash memory for blacbox
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* SBUS inverter connected to UART1
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* Uses target **FIREWORKSV2**
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### Omnibus Corner Nano
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* Configurable inverter on UART6
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* Use target **OMNIBUSF4V3**
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## **NOT** supported
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* HC-SR04 Rangefinder
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* ServoTilt
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## Radio Receivers
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SerialRX, PPM and MSP receivers are supported.
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SerialRX and PPM receivers should be connected to dedicated _PPM SBUS_ connector above _Motor 1_. MSP receivers should be connected to one of UARTs configured as MSP.
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## Motors
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| Motor | pin |
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| ---- | ---- |
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| 1 | PB0 |
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| 2 | PB1 |
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| 3 | PA3 |
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| 4 | PA2 |
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| 5 | PA1 |
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| 6 | PA8 |
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## USB
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This board uses STM32 VCP and _not_ utilizes UART when USB is connected. STM32 VCP drivers might be required!
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Flashing requires DFU mode and STM32 DFU drivers. Two options for installing the proper driver:
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* [Zadig](http://zadig.akeo.ie) tool to install WinUSB driver on Windows.
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* [ImpulseRC Driver Fixer](https://impulserc.com/pages/downloads) installs the STM32 DFU driver with a single click.
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## Buzzer / Beeper
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5V piezo buzzer should be connected directly to dedicated pins _BUZ +_ and _BUZ -_. No additional hardware is required.
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## RSSI ADC
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* Connected to pin PA0
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* 3.3V tolerant, do not supply 5V
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## Current Meter ADC
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* Connected to pin PC1
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* 3.3V tolerant, do not supply 5V
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## Voltage monitoring
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* Connected to pin PC2
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* Connected to VBAT pins (both are the same) and integrated Voltage Stabilizer (LM7805M)
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## Integrated voltage stabilizer (Omnibus F4 v1 only)
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It is integrated with voltage monitoring and always powered when VBAT is connected to battery.
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Because this is a **Linear Stabilizer**, it has a tendency to overheat, especially on 4S. Because of that,
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avoid powering too many devices directly to 5V pins on the board. RX receiver (and board itself) is rather all
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it can do without overeating (150mA on 4S gives 1.5W of waste heat!). OSD, LED Strip and other devices should powered from separate BEC if voltage monitoring is to be enabled.
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## LED Strip
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LED strip is enabled as indicated on flight controller silkscreen or schematics.
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For INAV versions before v1.8.0, LED strip was shared with Motor 5 pin (PA1).
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For Omnibus F4 Pro clones (Banggood, AliExpress, eBay, etc.) use **OMNIBUSF4PRO_LEDSTRIPM5** target for LED strip on M5 pin as the dedicated LED strip connection on these devices is typically wired incorrectly.
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## SoftwareSerial
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### Omnibus F4 v1/v2 SoftwareSerial Connections
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This board allows for single **SoftwareSerial** port on small soldering pads located on the bottom side of the board.
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Please note that this is *not* the motor PWM5/PWM6 pins, but small surface mount pads CH5/CH6.
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### Omnibus F4 Pro SoftwareSerial Connections
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| Pad | SoftwareSerial Role |
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| ---- | ---- |
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| CH5 | RX |
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| CH6 | TX |
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### Omnibus F4 v3/v4/v5 SoftwareSerial Connections
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Softserial mappings can be selected by choosing between different build targets.
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Some of these can be used for Smartport, FPort, or other inverted protocols.
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OMNIBUSF4V3: Softserial1 on UART6-TX pin.
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OMNIBUSF4V3_S6_SS: Softserial1 RX or TX on S6 (motor 6)
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OMNIBUSF4V3_S5_S6_2SS: Softserial1 on S5 RX or TX (motor 5) and Softserial2 on S6 (motor 6)
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OMNIBUSF4V3_S5S6_SS: Softserial1 on S5/RX and S6/TX
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With the OMNIBUSF4V3 target, SOFTSERIAL1 is an uni-directional port mapped to UART6-TX pin.
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When enabled, the UART6 is still available as hardware port but it's then RX-only port (good for e.g. receiving S.BUS input). TX instead is controlled in software and can be used for transmitting one-way telemetry (e.g. LTM). Please note that UART6-TX line passes programmable inverter on those boards, so it is a pure output-only port. SmartPort/FPort telemetry requires bi-directional communication, so it is not possible on this port without hardware modification (bypassing the inverter).
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SmartPort / FPort is possible without a hardware inverter by using one of the OMNIBUSF4V3___SS builds and connecting SmartPort to the motor 5 or 6 pad.
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## Where to buy:
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* [Omnibus F4 v5](https://inavflight.com/shop/p/OMNIBUSF4V5)
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* [Omnibus F4 Pro](https://inavflight.com/shop/p/OMNIBUSF4PRO)
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* [Omnibus F4 Nano V6](https://inavflight.com/shop/s/bg/1320256)
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## Powering servos and FC (fixed wing)
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These boards have a set of diodes which allow you to power servos
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and the flight controller in three different ways, without back EMF
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from the servos damaging the electronics. Most commonly an ESC
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connected to the servo rail provides 5V power for the servos.
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If your opto-isolated ESC doesn't provide 5V and you have servos,
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connect a 5 BEC to the servo rail (any of the servo outputs 1-4).
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The BEC can also power the board electronics, through a protective diode.
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Do NOT bridge any other 5V pad to the servo rail, or connect servos
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to any other 5V pad on the board. The back EMF from a a servo can
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destroy the chips on the board.
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# Wiring diagrams for Omnibus F4 Pro
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Following diagrams apply to _Pro_ version with integrated current meter and JST connectors only
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## Board layout
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## Flying wing motor and servos
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## RX setup
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## FPV setup
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## GPS setup
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_Diagrams created by Albert Kravcov (skaman82)_
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