User guide 1.8

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User Guide - Index

GUI - controls

GUI - configuration options

GUI - configurable screen layouts

GUI - FC emulator

OSD - accessing the built in OSD menu

OSD - additional configuration settings

LINKS - helpful FPV community reference info

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GUI - controls

Controls and communication

Comm port

Select the communications port for the OSD

Baud Rate

The default baudrate is normally 115200

Use 57600 for Mavlink based systems such as Ardupilot/APM/PX4

Passthrough

If connecting through a supporting FC, enable this

Select the appropriate UART the OSD is connected to

FONT Tools

Edit Font

Editor for currently loaded font file

Write Font

Uploads fontfile from the GUI into the OSD

Load Font

Browse for an alternative font file to load into the GUI

OSD Controls

Read

Reads values from OSD into the GUI (including screen layouts)

Write

Updates the OSD with values set in the GUI (including screen layouts)

Default

Resets the board to OSD default settings

Restart

Restarts the OSD - sometimes required after saving changes

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GUI - configuration options

Voltage

Voltage source – select the source of voltage – from FC or direct to OSD

Auto Detect – Use battery cell count – this uses configured fixed cell count and alarm values for the battery state gauge and alarms.

Auto Detect – Autodetect cell count / alarm – this autodetects the number of cells and determines alarm voltage based upon the autodetect cell alarm voltage.

Voltage adjust - use this to adjust the displayed voltage to match the actual battery voltage. Note if voltage is taken from the flight controller this adjustment is not applicable.

Voltage alarm - if not using autodetect, set this to the voltage at which you require the battery voltage to start to flash.

Amperage

Amperage – direct connect - select this for Amperage values from sensor connected directly to OSD.

Amperage – use FC - select this for Amperage values from FC.

Amperage – use virtual - select this to use a software estimation of calibrated current draw against throttle position.

mAh Alarm - use this to set alarm warning for bat capacity. Zero is disabled

Amp Alarm - use this to set alarm warning for Current draw. Zero is disabled

!!NOTE !! - remember to select 5v reference if using direct Amperage

!! NOTE !! See guide for how to calibrate

RSSI

RSSI source – direct analog – use analogue voltage connected to OSD.

RSSI source – direct RSSI – use PWM RX signal connected to OSD.

RSSI source – from FC – use RSSI value from FC.

RSSI source – RC channel – use RX channel from FC.

RSSI channel – channel when using source = RC channel.

RSSI alarm - set this to the value at which you require the RSSI value to start to flash

Min - minimum value with TX turned off.

Max - maximum value with TX turned on.

!!NOTE !! - remember to select 5v reference if using direct analog RSSI

!! NOTE !! See guide for how to calibrate

Display Callsign

Disabled - do not show callsign

Show permanently - always on when enabled in screen layout.

Display every 4 seconds every minute - when enabledin screen layout.

Reference Voltage

You must select this if you wish to use > 4s

You must select this if you wish to use HW current sensor or Analogue RSSI

!!NOTE!! This requires a smooth power supply to the OSD when enabled

Other

Video signal - select NTSC or PAL to match your Camera

Transmitter type – select transmitter channel ordering for APM/PX4/MAVLINK

Mavlink system id – must match id of FC. Default is 1

Test alarms – enable/disable prominent alalrm messages such as “Low Voltage”

Throttle display type - shows PWM throttle value or %

Vario indicator size – single character or multiple rows for increased resolution

Metric or Imperial for units of display and measurements

Transmitter reverse – channel reversing if needed for APM/PX4/MAVLINK

Battery Health icon - shows static or remaining capacity battery icon

Statistics – show statistics for full flight or since armed

Map mode – display aircraft, home or both positions as a map relative to launch

Analog sensor type – 1.1v is more accurate, but mandatory to use 5v for > 4s or if using direct analog RSSI or current sensors

Audio vario deadband – if not zero, creates an area of no sound around horizontal flight

Audio vario throttle switch – if throttle is above this value, audio vario is suppressed as under power. 1000 always off, 2000 always on

GPS

Display type - enables masking of major GPS digits with false values. Replace these with co-ordinates of the area to find downed aircraft

Fixedwing BARO/ALT - enables use of BARO and MAG data instead of GPS. GPS is default and previously always used for OSD

LAYOUT

OSD screen switch - choose to enable screen switching by FC OSD switch function (2 layouts) or RC channel (3 layouts)

RC channel – channel used for Screen switch if enabled

HUD

Sidebar height – adjust height of HUD sidebars

Sidebar width – adjust separation of sidebars

Alarms

Setting to 0 disables alarm

Distance Alarm - use this to set alarm warning for max distance

Altitude Alarm - use this to set alarm warning for max altitude

Speed Alarm - use this to set alarm warning for max speed

Timer Alarm - use this to set alarm warning for timer (in minutes)

VTX

Adjust VTX values for supported FC

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GUI - configurable screen layouts

Understanding the concept of how it works

This is significantly changed in R1.8 – elements are only enabled / disabled on the screen editor instead of additional menu options

1, 2 or 3 layouts can be uploaded to OSD

FC using OSD switch functionality supports 2 layouts, RC channel supports 3

Use the layout editor to create a layout that is available to the OSD to use

Fields can be enabled or disabled per layout using the editor switches

Fields can be moved around by click / drag of the screen item

Middle mouse click on screen item selects the corresponding switch to enable/disable

Predefined layout templates can be used to help in creating your preferred layouts

SAVE settings to file

Saves the settings to file for backup

LOAD settings from file

Loads settings from a previously backed up file

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GUI - FC emulator

Use this to simulate a MSP class flight controller connected to your OSD (Betaflight, Cleanflight, iNav etc.)

Primarily used for OSD development

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Firmware Flasher

Easy and quick upload of pre-compiled firmware to OSD!

Select version, Hardware device, FC or OSD variant and aircraft type

Key release notes and information is displayed for reference

Load firmware form online repository

Click flash and watch the progress

Alternative option to flash from a local binary

View and install test releases when available

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OSD - accessing the built in OSD menu

To access the inbuilt OSD menu, with the FC DISARMED:

THROTTLE MIDDLE

YAW RIGHT

PITCH FULL

To navigate the OSD:

PITCH/ROLL sticks are used to navigate

YAW stick is used to adjust / change values

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OSD - accessing the built in FC menu

Access to the inbuilt FC menu is supported for some FC such as betaflight and iNav. With the FC DISARMED:

THROTTLE MIDDLE

YAW LEFT

PITCH FULL

To navigate the FC menus, stick settings defined by the FC are used

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OSD - additional configuration settings

config.h
Further settings are available in config.h due to :

memory constraints to leave enabled permanently

rarely used

not yet moved to the GUI

def.h Advanced settings are available in def.h.

Primarily for developers

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LINKS - reference info

Wiki - prime source of information

FAQ - 80% of questions are answered here