MobiFlight Community Support

Hi,
I have a fuel gauge that I would like to read zero when the battery master switch is off and then read the fuel contents when the battery master switch is on, the fuel gauges reads the FSUIPC Offset value 0B74 which does not change if the batery master switch is on or off, any ideas how this can be achieved ?

Hi........ Maby Difficult.

EDIT: If you use a Servo instead of Stepper this normaly should work fine !

I´m on a trip and not on my Flight Sim Computer... So i can´t test this at the moment.... You have to try out youreself.

Create a Duplicate Config of youre working Fuel Gauge Config ( Device same Stepper)
Add a compare in this new duplicate Config to Zero the Value ( Maby If Value = 1 Then 0 Else 0 )

Create a Readout Config ( No Device) for the Master Battery Switch.

Now Add Preconditions in the Fuel Gauge Configs....
The Main Config " Only Work if Master Battery = 1"
The Duplicate Zero Config " Only Work if Master Battery = 0"

Maby this is enough and work........ But Maby there is a Problem with the "Zero" Point of the Stepper. (Not shure if it´s posible to controll a stepper with two different Configs cause it´s normaly need to get calibrated every use)

PLEASE Report if this is working already !


If THIS is NOT working i need to use the bad word "LUA" again.
If we would write a simple script that do this calculation for us then Mobiflight can Readout the final Data.

Script would be maby.....
Read Fuel Offset
Read Battery Offset.
Create new Output Offset on Custom Adress ( Maby 66c0)
IF Battery = 0 THEN Output = 0
ELSE Output = Value of Fuel Offset.

Mobiflight then would read the new Custom Output for the Gauge.... If Battery is Off then the value turn into Zero and Mobi would simple show it.
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Again sorry that my LUA Sklills are still poor. I Hope in future i be able to write a script like this and share it here in Mobiflight !

Hi Pizman,
Thank you for the advice, Using a servo I will have a go tonight and report back

Hi Pizman,
I changed my fuel gauge over to a micro servo and created the configs as described in your previous email, everything worked great ! thank you for all your help.