MobiFlight Community Support

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A HUGE Thank You to everyone who participated in the forum, especially obviously to Pizman and Stephan who did an outstanding job over so many years providing an incredible service to the MobiFlight community.

The forum is still providing a lot of good content, hence we keep this information accessible.

Message #28027

tomulanek

Posts: 8

Hello, I have problem. Have four display for display now com and nav frequency. One display after run MSFS2020 won´t turn on other three display they turn on. I use for communication my frequency panel and pc Simconnect in Mobiflight. All display they have same configuration except function. For turn on all four display must again upload configuration in mobiflight.

What is the problem with turning on all display?

2023-08-28 17:32

Message #28028

XPRoberto

From: Hungary

Posts: 65

Hi,
Are these displays the max7219 tube displays?
I face similar problems, the reason can be several:
- are the soldering / connections good ?
- is the power supply appropriate ? You cannot feed all these modules from the Arduino with +5v !

----------------------------------------------------------------
Do you know that you can simplify: if($=1,0,1) ?
Use simply: 1-$

2023-08-29 10:18

Message #28049

DocMoebiuz

Moderator

From: EDSH, Germany

Posts: 1516

Sounds like a power issue to me, too. Please make sure that you feed 5V directly to each module. Don't daisy chain the 5V - there is a power drop due to a diode for each module and in the end you end up with insufficient voltage. It typically starts with the 4th one.

Have a great day!
Sebastian

MobiFlight - Simply build your own home cockpit for your favorite flight sim - MSFS2020, FSX, Prepar3D (FSUIPC), X-Plane (XPUIPC)

2023-09-04 18:00

Message #28077

tomulanek

Posts: 8

Hello,
I do not think that power, besause was connected external power 9V in a arduino mega. I checked connection 7segment display and is OK. Display with external power they behave anyway.

2023-09-09 22:01