this error gives me in the console tab.

"ERROR - error in dataref callback: logic.lua:12: attempt to index a nil value (global 'NeedleLeft')"

try with this the image does not disappear anymore it gives me the instrument as such but it does not work it gives me an error in execution

-- Gauge FUEL FLOW Twin Comanche (c) JDLEONR img_add_fullscreen("FuelFlow.png") img_add_fullscreen("NeedleLeft.png") img_add_fullscreen("NeedleRigth.png") function ff_data(ff_1, ff_2) calc_ff_1 = 188.4 - ((0.0162 * ff_1^3) - (0.0646 * ff_1^2) + (4.386 * ff_1)) calc_ff_...

What's up, I couldn't find the images so I started to create them in inkscape, I share them below, then I export it to PNG and when I run the images it gives me a blank instrument, any suggestion what it could be?

and if I'm watching all the videos

ok, now i have the images and i am trying with part of the code taking as an example a normal fuel flow meter

How's it going,
Could someone help me, I'm trying to make a Fuel Flow instrument from a Piper PA-30 Twin Comanche, but I can't understand very well the process of creating an instrument, could someone help me?

I have a problem, I am making my panel of a 172 and I want to connect it to arduino to function with an encoder, but I am already testing with several instruments and the only one that recognizes the order is the artificial horizon or altitude indicator, I tried all the buttons with the same and if ...

by chance you would have a user manual, to learn all its functions.