HUD, HGS and HCP Project

[Keith Baxter]

Hi,

Most know that I am on the march to dev a "HUD system" set of instruments for Zibo Cockpit builders.

The prototype of the HGS panel is in progress. Just waiting for the LED switches and the 2.8" display

If Corjan cannot get the transparent BG working on video streaming I will have to make a plan. what plan? I don;t know yet

Keith

[Keith Baxter]

Hi,

So far the code for the HUD.

Code: Select all

--***********************************************************************--
--Set environment
xpl_dataref_write("sim/private/controls/panel/always_render","FLOAT",1)
xpl_dataref_write("sim/private/controls/perf/cockpit_kill_dist","FLOAT",30000)
xpl_dataref_write("laminar/B738/hud_disable","DOUBLE",0)

--Texture position to stream
xpl_dataref_subscribe("sim/graphics/view/view_type","INT",
                      "laminar/B738/hud_disable","DOUBLE",function(val,vis)
   if     val == 1024 and vis == 0.0 then
             hud_stream = video_stream_add("xpl/gauges[1]",0, 0, 1010,760, 500,10, 680,520)
   elseif val ~= 1024 and vis == 0.0 then
             hud_stream = video_stream_add("xpl/gauges[1]",0, 0, 1010,760, 0,10, 680,520)
   end
end)

The code for the HGS

Code: Select all

--***********************************************************************--
--Set environment
xpl_dataref_write("sim/private/controls/panel/always_render","FLOAT",1)
xpl_dataref_write("sim/private/controls/perf/cockpit_kill_dist","FLOAT",30000)
xpl_dataref_write("laminar/B738/hud_disable","DOUBLE",0)

--LED declare
rwy_led  = hw_led_add("Runway", 0)
gs_led   = hw_led_add("Glide Slope", 0)
clr_led  = hw_led_add("Clear", 0)
test_led = hw_led_add("Teas", 0)

--Make the HGS visible
xpl_dataref_subscribe("sim/graphics/view/view_type","INT",
                      "laminar/B738/hud_disable","DOUBLE",function(val,vis)
   if     val == 1024 and vis == 0.0 then
             hgs_stream = video_stream_add("xpl/gauges[1]",0, 0, 200, 164,1170, 0, 230,220)
   elseif val ~= 1024 and vis == 0.0 then
             hgs_stream = video_stream_add("xpl/gauges[1]",0, 0, 200, 164,670, 0, 230,220)
   end
end)

--Buttons
mode_button = hw_button_add("MODE Button",function()
   xpl_command("ToGate/B738/HUD_HGS/Command/MODE")
end)
stby_button = hw_button_add("STBY Button",function()
   xpl_command("ToGate/B738/HUD_HGS/Command/STBY")
end)
rwy_button = hw_button_add("RWY Button",function()
   xpl_command("ToGate/B738/HUD_HGS/Command/RWY")
end)
gs_button = hw_button_add("GS Button",function()
   xpl_command("ToGate/B738/HUD_HGS/Command/GS")
end)
clr_button = hw_button_add("CLR Button",function()
   xpl_command("ToGate/B738/HUD_HGS/Command/CLR")
end)
brt_button = hw_button_add("BRT Button",function()
   xpl_command("ToGate/B738/HUD_HGS/Command/BRT")
end)
dim_button = hw_button_add("DIM Button",function()
   xpl_command("ToGate/B738/HUD_HGS/Command/DIM")
end)

--Matrix for the NUM Pad
num_pad =hw_button_array_add("NUM keypad", 4, 3
,function(row,column)
--Row 0
    if     row == 0 and column == 0 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_1")
    elseif row == 0 and column == 1 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_2")
    elseif row == 0 and column == 2 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_3")
    end
--Row 1
    if     row == 1 and column == 0 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_4")
    elseif row == 1 and column == 1 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_5")
    elseif row == 1 and column == 2 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_6")
    end
--Row 2
    if     row == 2 and column == 0 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_7")
    elseif row == 2 and column == 1 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_8")
    elseif row == 2 and column == 2 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_9")
    end
 --Row3
    if     row == 3 and column == 0 then
        xpl_command("ToGate/B738/HUD_HGS/Command/ENTER")
    elseif row == 3 and column == 1 then
        xpl_command("ToGate/B738/HUD_HGS/Command/NUMPAD_0")
    elseif row == 3 and column == 2 then
        xpl_command("ToGate/B738/HUD_HGS/Command/TEST")
    end
end)

--Subscribe to datarefs for led state
xpl_dataref_subscribe("ToGate/B738/HUD_HGS/ANIM/Light_RWY","DOUBLE",
                      "ToGate/B738/HUD_HGS/ANIM/Light_GS","DOUBLE",
                      "ToGate/B738/HUD_HGS/ANIM/Light_CLR","DOUBLE",
                      "ToGate/B738/HUD_HGS/ANIM/Light_TEST","DOUBLE", function(rwy,gs,clr,test)
hw_led_set(rwy_led , rwy)
hw_led_set(gs_led  , gs)
hw_led_set(clr_led , clr)
hw_led_set(test_led, test)
end)

Keith

[SimPassion]

Hi Keith, just watch if it make any difference when starting X-Plane with the EFB HUD parameter OFF for Pilot vs starting X-Plane with EFB HUD parameter ON ... in any case

[Keith Baxter]

Hi Keith, just watch if it make any difference when starting X-Plane with the EFB HUD parameter OFF for Pilot vs starting X-Plane with EFB HUD parameter ON ... in any case

Gilles,

This dataref makes the HUD visible or not.

xpl_dataref_write("laminar/B738/hud_disable","DOUBLE",0)

The only time there might be an issue is if the sim is started after the instrument because the setting of dataref is already done and the sim will start with the dataref at "1"

Keith

[SimPassion]

Hi Keith, just watch if it make any difference when starting X-Plane with the EFB HUD parameter OFF for Pilot vs starting X-Plane with EFB HUD parameter ON ... in any case

Gilles,

This dataref makes the HUD visible or not.

xpl_dataref_write("laminar/B738/hud_disable","DOUBLE",0)

The only time there might be an issue is if the sim is started after the instrument because the setting of dataref is already done and the sim will start with the dataref at "1"

Keith

So I guess not even tried ...

[Keith Baxter]

Gilles,

The point is-- There is a HGS and HDU installed so it should always be visible. Well the HGS at least.

I would have to look at the pilots guide to see if the HUD can be switched off without removing it from the cockpit.
I will ask.


Keith

[Keith Baxter]

Hi,

For the combiner I am going to use something like this---
https://www.ubuy.za.com/product/37JCBTQ ... tion_popup
with a small video projector.

Should work @jph what you think?

Keith

[Keith Baxter]

https://youtu.be/gm6u6it2qYM?si=2O0aZOs-1G9VIpFY

[jph]

Hi,

For the combiner I am going to use something like this---
https://www.ubuy.za.com/product/37JCBTQ ... tion_popup
with a small video projector.

Should work @jph what you think?

Keith

Hi Keith, I am not exactly sure what you are using the sheet for, What is a 'combiner' ? can you clarify the usage ?. thanks
Joe

[jph]

Just saw the video you linked to - or part of it. I presume you want a head up display ? would this not be better done as an instrument - I realise you are seeing some difficulty with the background I believe but I am sure @Corjan can sort that ?
Reflecting off a a monitor via a projector would be extremely problematic even with a coating or sheet. Even then you would need oled to have proper 'black' - ie: - no light in the unlit areas as any other system would still project light. I think the instrument (AM) route is definitely the best.
Joe