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Document is a work in progress.

Main view screenshot:


Click on any gauge in the screenshot above to quickly view documentation details on said subject.

Itemized Gauges

  1. Annunciator Panel (left side)
    This is the first of two group panels for callouts/indicators that report various states related to telemetry and flight information.

    1. Telemetry HeartBeat
      Green background with toggling transparent and white foreground text colors roughly every once per second to indicate reception of telemetry updates are OK.
      Red background indicates no telemetry updates for more than a couple of seconds after expected update time frame.
    2. Motor ARMed
      Only text outline with no background nor foreground text colors indicates motors are in an unarmed state.
      Red background and white foreground text colors indicate motors are in an armed state. For some flight controllers the motors are already running in this state.
      Blinks rapidly for a short time when state changes.
    3. Flight Mode
      Callout for current flight mode using three letter abbreviations.
      For abbreviations table used for the flight controller you are using see supported [flight controllers] section in the OSD manual.
      Blinks rapidly for a short time when mode changes.
    4. Waypoint Count
      Callout for number of waypoints retrieved from the flight controller and that are available for display in the VPI.
      Note that the callout is limited to reporting up to 99 waypoints. If more than 99 waypoints are retrieve the callout will still just report W99.
      Displayed with green background and white foreground text colors with "W" and two digit number when successfully retrieved the number of waypoints.
      Displayed with just black outlining of "NWP" text when no waypoints are available from flight controller.
  2. Annunciator Panel (right side)
    This is the second of two group panels for callouts/indicators that report various states related to R/C and OSD status information.

    1. Video Main
      Callout for primary video capture port group's current video source port number in use.
      This video capture port group is typically used for Main camera, OSD overlay, video source.
      Always displayed with green background and white foreground text colors.
    2. Video PIP
      Callout for secondary video capture port group's current video source port number in use.
      This video capture port group is typically used for Picture-in-Picture video source.
      Always displayed with green background and white foreground text colors.
    3. TX Reception Quality
      Displays the transmitter reception quality as reported by the flight controller in classic cellular phone signal strength antenna bars gauge style.
      Quality signal display states:
      • Two dashes – –, when no TX reception quality is being provided in the telemetry data feed.
      • 71% — 100% Quality: White background color with three to five black bars, when TX reception quality is good to excellent.
      • 41% — 70% Quality: Orange blinking background color with two to three black bars, when TX reception quality is moderate.
      • 0% — 40% Quality: Red fast blinking background color with zero to two black bars, when TX reception quality is none to poor.
  3. Compass Heading

    1. Ribbon
      Displays a graphical ribbon to indicate current compass heading with North, East, South, and West single letter abbreviations at 0, 90, 180, and 270 degrees respectively.
      A red arrow is displayed to indicate no home position has been set. Normally seen below North heading.
      A blue arrow is displayed to indicate the relative heading as to where the home position is located.
    2. Readout
      Compass heading readout displayed in degrees with standard 0 to 359 degree range.
  4. GPS Coordinates
    Displays the current GPS coordinates of the vehicle in degrees decimal minutes format:
    • Latitude in <N|S> <Degrees>'<Minutes>
    • Longitude in <E|W> <Degrees>'<Minutes>
  5. Vehicle Position Indicator
    The VPI, or known as the Vehicle Position Indicator, is a graphics overlay that is responsible for displaying the vehicle's current position, the home/takeoff position, distance to home position, and navigation waypoints indicators/icons on top of the artificial horizon.
    For the main view screen outline purposes here are details for the following VPI components:

    1. Distance from Home
      Displays the VPI scale factor and distance between vehicle's position and the home position in units set by the user locale preferences. See [OSDConfig settings manual] for unit configuration details.
      First line is the VPI scale factor marked with an X at the end which means the distance from the center of the screen (artificial horizon's cross hairs) to the edge of the screen.
      Second line is the distance from the vehicle's position to the home position.
    2. Vehicle Position
      Indicates the current vehicle's position relative to the home position.
    3. Home Position
      Indicates the current home position relative to the vehicle's position.
  6. Airspeed
    Displays the current vehicle's airspeed (relative to ground by default) in a ribbon style gauge in tens unit increments with a numerical readout on top and in the center of the ribbon.
    In addition there is a red arrow that indicates the relative reading provided by the GPS or GPS airspeed specifically. For instance if the red arrow is centered horizontally with the numerical readout then either the GPS agrees with the flight controller's telemetry on current airspeed or there is no GPS airspeed provided then the arrow is simply parked in the middle of the ribbon gauge as is the default state.
    Another example is if the red arrow is say 20 units above the center of the ribbon horizontally (or of numerical readout) then the GPS airspeed is 20 units higher than the flight controller's reported airspeed.
  7. Vertical Speed Indicator (VSI)
    The VSI, Vertical Speed Indicator, and also called a Variometer, is a gauge that displays the vehicle's rate of climb in the same units as used for the altitude gauge.
    Note: There can only be one type of VSI gauge displayed at one time, however for example display purposes both styles are shown in the screenshot at the top of this page.

    1. Ribbon Style
      Display example of the ribbon style of the VSI gauge that is right-aligned with the airspeed ribbon gauge.
      The climb rate is presented as a red arrow to mark the value on the ribbon.
    2. Readout Style
      Display example of the readout style of the VSI gauge that is left-aligned with the altitude ribbon gauge.
      The climb rate is presented as a numerical value.
  8. Altitude
    Displays the current vehicle's altitude (absolute and relative to ground are supported) in a ribbon style gauge in hundreds unit increments with a numerical readout on top and in the center of the ribbon.
    In addition there is a red arrow that indicates the relative reading provided by the GPS or GPS altitude specifically. For instance if the red arrow is centered horizontally with the numerical readout then either the GPS agrees with the flight controller's telemetry on current altitude or there is no GPS altitude provided then the arrow is simply parked in the middle of the ribbon gauge as is the default state.
    Another example is if the red arrow is say 150 units below the center of the ribbon horizontally (or of numerical readout) then the flight controller's reported altitude is 150 units higher than the GPS's reported altitude.
  9. Artificial Horizon
    Displays the pitch and roll of the vehicle as reported by the flight controller's telemetry data feed.
    The artificial horizon is displayed as a series of ladders in ten degree increments with ladders drawn as green being ground, blue ladders sky, and white center ladder as the estimated horizon line position relative to the vehicle's angular orientation.
    The ladders slide up and down for pitch and rotate for roll. The artificial horizon has full ±90 pitch and ±180 roll standard degree ranges.
    Optionally a crosshair is available to be displayed in the center of the OSD screen as a white box with outward tacks on each side.
  10. Picture-in-Picture (PIP)
    The Picture-in-Picture is an optional small rectangular display of the video feed chosen for Video PIP source port. ...
  11. Flight Timer
    Displays the total flight time in <Minutes>:<Seconds>.<Tens of Milliseconds> format.
    The flight timer automatically starts upon motor(s) start and stops on motor(s) stop. It however currently does not reset automatically on main power (MBAT) voltage reset (battery swap outs).
    To reset the flight timer it requires to either power cycle the OSD board or press the reset button on either the OSD board or OSD Remote board.
  12. Series of bottom gauges
    ...
    1. GPS Satellite Count
      Displays the number of GPS satellites in use for obtaining vehicle position lock.
      Display format is <SatelliteCount> SAT. SAT being an abbreviation for satellites.
    2. GPS Horizontal Dilution of Precision (HDOP)
      Displays the estimated horizontal dilution of precision for the vehicle's GPS location lock. Lower the value the more accurate the GPS coordinates are.
      The value is in meters as reported by the GPS receiver.

      Meaning to various values:
      • 00.00 — 01.00 is excellent for flying and landing in small yards.
      • 01.00 — 02.00 is excellent for flying and landing in decent sized yards.
      • 02.00 — 05.00 is considered good and reliable.
      • 05.00 — 10.00 is moderate. Still usable, but position will drift a lot.
      • 10.00 — 20.00 is fair, but quite unreliable position lock.
      • 20.00 — 99.99 is completely unusable GPS position.
      • 99.99 typically means no GPS satellites are seen/usable by the GPS receiver.
    3. OSD Battery Voltage (OBAT)
      Displays the voltage of the power being provided to the OSD board.
      Supported range is 6.00 through 30.00 volts.
    4. ABAT / RSSI
      This is a dual purpose gauge that supports the following operation modes:

      • Alternative Battery (ABAT)
        Displays the voltage value from the ADC(Analog-to-Digital Converter) pin.
        Supported range is 0.00 through 30.00 volts.
      • Analog RSSI (RSSI)
        Displays a percentage value 0% from 100% that is translated from minimum and maximum voltage range that is expected from the ADC(Analog-to-Digital Converter) pin.
        Supported range is 0.00 through 30.00 volts to provide a 0% to 100% display range.
        Example if minimum is set to 7 volts and maximum to 12 volts (5 volt effective range) while the ADC voltage is 10 volts (3 volt effective) then the display value will be 60%.
    5. Main Battery Voltage (MBAT)
      Displays the main battery voltage as provided as provided by the telemetry data feed.
      Readout will blink when no valid or low voltage value.
    6. Main Battery Current (MCUR)
      Displays the main battery current amps draw as provided by the telemetry data feed.
    7. Main Battery Power (MPWR)
      Displays the main battery power remaining in percentage (%) as provided by the telemetry data feed.
      Readout will blink when no valid or low percentage value.