MobiFlight Community Support

Hello,

I have problem with 7segment display does not work following: when battery is off so off 7segment display.The 7-segment display should work by reading the active frequency from the aircraft. I use MSFS and mobiflyght with simconnect. How make it work. I tried all possible and nothing worked. Please help with mi problem.

Thank you wery much for answer

Hi

Please use Search with "Battery" You find 30+ Topics here or on Discord where this is explained.
Also in our Youtube Videos this is shown multiple times.

Basic Idea:
You read a Raw Data to define when Cocpit is un-power. Mostly we use the Battery Switch Position or the BUS Voltage.
Call this config e.g. Power Info. .... If its 1 Power is ON.... If its 0 Power is OFF.

Finally you can use this Information for a Precondition or more easy for a "Placeholder/Reference" within other configs.

In your case you simply use it in the 7Seg Frequency Config..... Lets say you use Config "Power Info" with symbol "a"
In Transform you say.... if(a=0,' ',$)
Means.... If Battery is OFF then show Spaces (Blank) Else (so if Battery is not 0) show $ (Value of Frequency).

thank you for the advice
where do I have to put the a symbol?

where do I have to put the a symbol?

In your case you simply use it in the 7Seg Frequency Config..... Lets say you use Config "Power Info" with symbol "a"
In Transform you say.... if(a=0,' ',$)

In "Add Config Reference" you choose for the used Indication Config and define the symbol "a" e.g.
In "Transform" you enter the formula .

EDIT: Just a screenshot from Websearch....
Not current version.... But there you see the Transform line (Currently 1 in picture) and you see the Reference Lines where you choose a config and a symbol.

In my setup, I have a set of relays that are Mobiflight controlled. When bus voltage is present, I close the relay and power the bus. This ensures that it behaves just like the real panel. All of my lighting and displays are managed this way and it works great.

Thats a way....
Some Builders do this.
Its specially needed if you use Real Aviation parts with 12 or 24 Volts.... So LED are not controlled directly via MF.

Whatever....
Meanwhile we can use in MF the Formulas and logics to handle LED and Displays in a very good and realistic way.

Always note....

A Switch Position ( Whatever a Real switch or the position of a Virtual Switch) is not a 100% Indication for a LED.

E.g. the Master Battery Switch.....
If we say LED should be Light if Switch is ON.....
There can be a Low Power situation where switch is ON but LED must be OFF in case of low Charge of Battery.

HI
I tried to use this method to modify the battery shutdown and baro, which works normally, but its display mode is not what I wanted. For example, when QNH is 998, it displays 998 instead of 0998. However, if I add a display of 0 on the left, it displays 0STD When I modify it to 'STD space' in the condition, it will STD, but when the battery is turned off, it will display 0000. If the left display 0 is not turned off, this function cannot succeed


thank you