Airbus A320 FCU Panel [Multi-Colored Version]

Update 2025-08/05 - Added my Mobiflight preset and a section in the end explaining it + some pictures.

Note: I have included the f3d file I used to add the text but since it got corrupted at the end and I had to recover an older version it is a bit messy, but the sketch with the text is still in there somewhere. ;)

A multicolored version of Mark Aytons FCU Panel. Designed to be printed with a 0.2mm nozzle and three filaments: blue, white and transparent PLA. The panel supports backligtning since I'm using transparent PLA. The LEDs are fitted in the back/bottom panel, the light shines throught the middle panel which has cutouts to let the light diffuse and through the top panel.

The back and middle panels can be printed with blue filament and a 0.4 nozzle, prefferably with 100% infill for added strength. The middle panel has two weak points in the two slits but there is a small “spacer” file wich can be glued in place to enforce it.

The front Panel is printed with a 0.2 mm nozzle on my bambulab x1c and the file is a 3mf file with multiple objects. When importing in OrcaSlicer or BambuStudio press no to scale to millimeters and yes to load as a single object with multiple parts. Then in the objects list right-click and change the filament colors for the top layer of text objects to white and the bottom layer of text to a transparent filament. Rotated 45 deegres to fit on the x1c buildplate.

I also had Ironing on top layer turned on which gave me a really nice finish. If you're printing my EFIS model too make sure to put it in the right otientation on the plate so the ironing lines match up.

Be sure to check out my EFIS Panels and 3d printable Korry Buttons ;). 

A link for the transparent pla that I used: https://www.3dprima.com/se/filament-resin/filament/pla/others/polymaker-panchroma-pla-translucent_31803_15852 

3mm flat top warm white LED: https://www.aliexpress.com/item/1005007536927963.html?spm=a2g0o.productlist.main.1.6257U9nDU9nDid&algo_pvid=01b84067-2369-491c-a8d5-458214d6c05c&algo_exp_id=01b84067-2369-491c-a8d5-458214d6c05c-0&pdp_ext_f=%7B%22order%22%3A%2253%22%2C%22eval%22%3A%221%22%7D&pdp_npi=4%40dis%21SEK%2148.79%219.87%21%21%2135.23%217.12%21%40210384cc17475696295493007e1c85%2112000041204892453%21sea%21SE%210%21ABX&curPageLogUid=9LVI2TGXM8pq&utparam-url=scene%3Asearch%7Cquery_from%3A 

Software, Mobiflight

For the software I used a program called Mobiflight. It basically connects to your simulator and sends a command every time a button is clicked. I've added my own preset in the files page that works with the Fly By Wire A32NX and I will describe everything shortly here:

You first have to start by flashing the arduino with the Mobiflight software and specifiyng the inputs and outputs to the physical pin. Click on “Mobiflight Modules” and you should see your arduuino and be able to flash it with the correct inputs. 

Important, when flashing the FCU or EFIS arduino be sure to flash with Kav's firmware and not the default Arduino Mega firmware.

Inputs

All the inputs are fairly staraightforward, every physical button is bound to an MSFS input. The file is separated into FCU, RMP and WINWING sections. The winwing input is just my personal input which you can delete.

Outputs

The outputs on the other hand are a bit more complex since for example everything is turned off when the battery amd external power is disconnected from the aircraft, the RMP switch works and the annunciator test switch works. But the core is the same, every LED and display is connected to an output. Beyond that there are some more lines that tell the lights to turn off or on dending on the aircrafts state. Most outputs also have a defined “precondition” which basically is an “if” statement. If the precondition is false the line won't execute.