#7 Segment 4 Digits LED Display

1 messages · Page 1 of 1 (latest)

bright shoal
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Hello! I wanted to ask, how to wire a Display with only CLK and DIO and not with the DIN CS and CLK, because I only have CLK and DIO. I tried to just set DIN to DIO (and CLK to CLK obv) and just ignore CS but it doesnt work

obsidian forge
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Sorry, but the only 7 segment displays supported in Mobiflight are with the max7219 driver chip.

bright shoal
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so there is no way?

obsidian forge
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No easy way. If you are a programmer, MF is open source, so you can modify the firmware to use your particular module.

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IMHO, just buying the correct module is the easiest route.

bright shoal
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okay, what are the best 3 digit display and 5 digit display with the correct chip?

obsidian forge
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I have never used them, though

bright shoal
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what are you using?

obsidian forge
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I bought some green board modules from Aliexpress that come with red digits installed on sockets. Removed the 4 digit clusters and rewired for 3 and 5 digit clusters

bright shoal
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can you send the green board modules and the digits what you ordered?

obsidian forge
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I have also bought 8bdigut modules from Amazon.

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These are the green board modules US $0.69 34%OFF | 8 Digit Bit MAX7219 Digital Tube Display Module Board 7 Segment Digital LED Display 5V/3.3V Controller for Arduino 51/AVR/STM32
https://a.aliexpress.com/_m0ofCBY

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The 3 and 5 digit clusters are a bit difficult to locate

bright shoal
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ah okay, and now you can just order some displays without the green board and install it?

obsidian forge
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Yes

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US $11.24 16%OFF | 5 Bits Digital Tube Led Display 7 Segment Yellow 0.36 inch Wholesale common cathode/anode 0.36" 0.36in four digits display
https://a.aliexpress.com/_ms2KDsm

bright shoal
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Is it bad if a few pins are not occupied on the circuit board because I think that a 4-digit display has more pins than a 3-digit display

obsidian forge
bright shoal
# obsidian forge These are the green board modules US $0.69 34%OFF | 8 Digit Bit MAX7219 Digital...

can this work? https://www.amazon.de/7-segment-Rectangle-Display-Cathode-a1474c139d86dc6a940f74a75c7ebc8c/dp/B0838KV8F1

Aexit 5 Stücke 0,36 zoll 3-Bit 7-Segment Rechteck Rote LED Digit Di...

Aexit 5 Stücke 0,36 zoll 3-Bit 7-Segment Rechteck Rote LED Digit Display Gemeinsame Kathodenröhre 11-Pin (a1474c139d86dc6a940f74a75c7ebc8c) Wechselbare 0 bis 9-stellige LED-Anzeige Digital Tube. Rot emittierte Farbe, 3-Bit-7-Segment, 11 Pins. Wird häufig in Haushaltsgeräten, Instrumenten, Zubehör...

obsidian forge
bright shoal
obsidian forge
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3 + 3 I think it is not a problem

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The problem is if you want 3 + 5

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Like I did in my MCP

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Or 2 +6

bright shoal
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yes... okay

obsidian forge
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Then some wires have to cross over

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A bit of work, but it can definitely be done.

bright shoal
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yeah, i need something like this. What is the best way to do it?

image.png
obsidian forge
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BTW, I did not install the displays directly on the sockets

bright shoal
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without the greenboard

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so without a custom greenboard

obsidian forge
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Buy the bare Max7219 chips and assemble your own pcb

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It is easy because the max7219 only requires one resistor and a couple of capacitors

bright shoal
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is there a way without assemble my own pcb?

obsidian forge
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I used a large perf board to build my MCP.

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It is a big wiring mess and took a long time but doable.

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I mounted the green board modules and the mega on the perf board and started wiring

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Mounted the displays to the faceplate

bright shoal
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okay thank you

obsidian forge
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Good luck

bright shoal
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so is it the right chip...?

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i mean when you scroll down, you can order like a 3 digit or 5 digit display

obsidian forge
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If it is max7219, it should work.

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make sure to buy common cathode digits... those are the only kind that works with the max7219

bright shoal
bright shoal
obsidian forge
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TBH, personally, I feel it is such a waste to use a whole max7219 for just three digits.

bright shoal
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but it works?

obsidian forge
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yeah, yeah, it will work

bright shoal
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aha okay thanks

obsidian forge
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I used only three max7219 in my MCP... 3 + 5, 3+ 5 and 5 + 3

bright shoal
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yeah, okay

bright shoal
obsidian forge
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I don't know if the 7221 can work.

obsidian forge
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@indigo citrus hi, can the max7221 be used instead of the 7219? I have never tried that one. It looks on paper like they are almost identical chips.

indigo citrus
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Yes, there are slight differences but nothing that affects us.

obsidian forge
ocean bramble
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Hallo, sorry, nur in deutsch. die Frage ist bestimmt schon 1000x gestellt worden, Habe aber in den ganzen Chats nichts gefunden. Gibt es für den Fenix funktionierende Presets für Mobiflight (7-Segment Anzeige)???
Der (A:PLANE HEADING DEGREES MAGNETIC, Degrees) zeigt nur eine Zahl an und ändert sich nicht, wenn ich am Knopf drehe. Vielen Dank!!!

obsidian forge
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Only English, please.
TRANSLATION
Hello, sorry, only in German. The question has probably already been asked 1000 times, but I didn't find anything in all the chats. Are there working presets for Mobiflight (7-segment display) for the Fenix???
The (A:PLANE HEADING DEGREES MAGNETIC, Degrees) only shows a number and doesn't change when I turn the knob. Thanks very much!!!

obsidian forge
ocean bramble
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OK thank you!!! I installed everything and did as instructed, but I can't get a connection to FUIPC. Also moved the "mobiflight-event-module" folder to community. Anyone have any advice?? Thanks very much!!!!

obsidian forge
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Make sure you have the latest version of Fsuipc installed.

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Did you install FenixQuartz?

ocean bramble
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I have installed:

  • "PilotsDeck_FNX2PLD" and started several times
  • in the "PilotsDeck_FNX2PLD.dll.config" the following keys are written to true
    <add key="rawValues" value="true" />
    <add key="useLvars" value="true" />
  • Mobiflight-event-module copied to Commutity
  • https://dotnet.microsoft.com/en-us/download/dotnet/7.0 installed

and I get the following message in "FNX2PLD20230326.txt":
2023-03-26 19:41:20.025 [INF] Program: FNX2PLD started! Log Level: Debug Log File: FNX2PLD.log
2023-03-26 19:41:20.033 [INF] WaitForSimulator: Simulator started
2023-03-26 19:41:20.039 [ERR] OpenSafeFSUIPC: Exception while connecting to FSUIPC
2023-03-26 19:41:20.039 [ERR] WaitForConnection: FSUIPC not connected - aborting
2023-03-26 19:41:20.042 [ERR] Program: Session aborted, Retry not possible - exiting Program
2023-03-26 19:41:20.042 [INF] IPC Manager: FSUIPC Connection closed
2023-03-26 19:41:20.042 [INF] Program: FNX2PLD terminated.

I also installed "FenixQuartz" but don't know what that means.
where can I find out if I have the latest FSUIPC version?

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very big thanks for your help!!!!!

obsidian forge
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you can delete PilotsDeck_FNX2PLD... it was renamed FenixQuartz in the latest release. It is the same app. Only run FenixQuartz. I suggest you better take this issue to the FenixQuartz thread.
The latest fsuipc version is always available from fsuipc.com. Version 7.3.19 is the latest.

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In general, it is not recommended to run the sim with administrator privileges. Doing that also forces all other software that works with the simulator to have to run with admin privileges.

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Then communication problems arise when you run one piece of software with admin privileges, but other without.

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Also, please open a new thread for your issue, since this thread is already marked as "solved" and it seems your issues are deeper than just wanting to configure a 7 segment display.

ocean bramble
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ok, thank you very much for your help!!!

broken sparrow
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hi all

i was going to ask this exact same question as i am building a radio panel that calls for 4 x 6 digit 7 displays and 1 x 4 digit but i'll be damned if i can find any.

my soldering abilities are amateur at best so i am not in any position to make these up myself, if anyone has any links on where i can buy teses from i'd be very grateful