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Posts: 4
Where do you start building your home cockpit? Right: Probably with a FCU - as long as you are an Airbus-Driver. After couple of hours of research, reading and testing it was clear: The only way to build it properly is with mobiflight and the corresponding PCBs provided on Github. Have I ever ordered a PCB? Yes. Once. Have I ever soldered components on a PCB? No.

And I am sure there are many people outside in the same situation. With this Thread I want to document my personal process, hope for answers to questions that might come up and at this end should result in a detailed complete guide in HOW TO BUILD YOUR MOBIFLIGHT FCU!

Step 1: THE PCB
As I am not a big fan of a big bunch of cables, I decided to go with the FCU PCB Design provided by Mobiflight on Github.

Everything you need is the file called PCB_A320_FCU.json

After downloading the file, you should be able to open the file in EasyEDA. After that, the only thing you need to do is to click FILE -> Generate PCB Fabrication File. And thats it! Now head over to the website of your choice (I would highly recommend JLCPCB), upload the ZIP-File and order the PCB. I have ordered 5 PCBS, as this is the minimum amount of PCBs and payed 28€ including shipping to Germany. Only 9 days later the PCBs arrived.

Step 2: 3D Printing first prototypes
As I was full of excitement, I downloaded the first 3D-Printing-Files. And I was curious how the Push-Pull-Encoder will be done! And wow, this solution is smart! It Consists of a 3D-Printed Frame and Slider, where the Encoder has room to slide back and forwards and the Push & Pull Event will be triggered by two tactile switches!

As I still had a bunch of tactile switched laying around, I printed the first prototype. The documentation recommended 6x6x16mm tactile switches. But I had 6x6x10mm switches laying around. So I edited the slider a bit and have a wonderfull working Push-Pull-Encoder! (If you are interested in the customized Slider-STL, let me know!)


Current Questions
I read through the BOM and saw all the needed components.

- Does somebody from Germany have a hint, where to get the parts for a nice price? Amazon is not often the perfect choice. For example for resistors. I used to have a Conrad in Hometown. But they are gone. What about Reichelt?

- LED-Driver: Max7219 are the only ones being supported, right? I saw 10 pieces for 15€ from China - is that an ok price?
2022-12-01 10:54
Posts: 4
Step 3: PARTS
A little - over the time updating - list of needed parts.

50 Ohm Resistor17Ordered
120 Ohm Resistor6Ordered
240 Ohm Resistor2Ordered
120 Ohm Resistor6Ordered
BS170 Transistor3OPEN
10uF Capacitor3SOLDERED
6x6x16mm Tactile Switches6SOLDERED with my 6x6x10mm for now
3mm LED Green13SOLDERED with my 5mm Green for now

As I had a couple of elements already laying around, I started soldering the first PCB. I plan to use the first one to "learn" everything about it and building two proper ones later one (one for me, one for my brother).
Question: Which parts are needed to get AP1 LED working? Already tested AP1 & AP2 Switches successful. AP1_LED not working yet. I assume some resistors are need first.

[Last edited by PierrePetite, 2022-12-01 13:03]
2022-12-01 12:58
Posts: 4
that's really helpful for nwebie like me to start up. Can you continue.
2023-11-15 00:09