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Building a multiplexed 5 digit 7 Seg to display frequency Unit

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Schema inc.

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Hi, everyone i would like to know how to approach in building a electronic circuit that will use a volume type/Power ON/OFF /Pull test switch to power on the Unit also 4 toggles 1st toggle is ch A(on) 121.70 or (on)B 121.90 Preselected fixed frequency and the 3 Frequency select toggles are mom(on) off(centre) mom(on) f rom R to L --3rd from right incr or decr last digit of (000.0X), 2nd from R incr or decr middle digit (000.X0), far Left toggle incr or decr (00X.00) and i would like to use a pic16F628A microchip/s to control the whole thing, also I want to be able to interface to flight sim via TTL to rs232 (USB)?
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I would like to use 5 npn/pnp transistors with 5 digit 7 Seg displays CA or CC : whichever /whatever gives me the max brightness. also I would like to use discrete components as much as possible: to keep costs down.
and all 5 Digits must be lit AT ONCE WHEN, POWERED ON.
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If anyone would like to give me a step explanation in the design, that will be great. I have tried researching a lot on all this and cannot find a complete tutorial so to speak on step instructions. I really want to learn how this is programmed and interfaced.


Input power: 12DC
[X= digit being changed]
 
Last edited:

Do you need to generate the frequencies ?

"4 toggles" is that 4 toggle switches ?

USB, USB UART OK ?

Display LED or LCD ?


Regards, Dana.
 

7 Segment LED display 0.56" type -Yellow /4 toggle switches SPST/SPDT and or DPDT /(USART or UART is ok, pretty much everything like the pics bellow
Thanks for responding .Dana
 

Attachments

  • RS232 To TTL Converter Module.jpg
    RS232 To TTL Converter Module.jpg
    272.4 KB · Views: 113
  • spdt.jpeg
    spdt.jpeg
    55.2 KB · Views: 108
  • rs232 to usb cable.jpg
    rs232 to usb cable.jpg
    18 KB · Views: 112
  • 7 Seg display.jpg
    7 Seg display.jpg
    23.6 KB · Views: 106

One approach using a single chip (PSOC) -

1653913038370.png



Compiler and IDE (PSOC Creator) free, Board would be $ 15, CY8CKIT - 059

1653913326115.png


This is catalog of components onchip, many multiple copies -

1653913174527.png



Regards, Dana.
 

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