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Thread: Season Interface Schematic?

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    Default Season Interface Schematic?

    I am trying to find a schematic for a max232 season interface.

    I am trying to build a season into a hummy with a bf430 to clean up the front of my HT setup.

    Any suggestions or links would be greatly appreciated.

    Also does anyone know how to power a bf430 internally from the humax?

    Thanks,
    -Suff



Look Here ->
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    Senior Member z80's Avatar
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    just google for alfredo season circuit.

    I am too slack to figure out how to post attachments on this site.

    in a nutshell on the embedded cam pcb in the humax...

    the line of fingers at the rear...leftmost is ground, right most is +5volts

    in the middle of the pcb..pin 2 is reset, pin 7 is data.


    just solder straight onto the pins.

    I'm sure fandtm66 will be along any minute with the pics of those...he will even show you how to mount the bf430 internally.

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    here is my photo shop one that i use to make mine it is already to scale so just open photo shop and print









    RED Standard red LED
    ORANGE SN7407
    YELLOW MAX232
    GREEN Standard green LED
    BLUE 1 uF tantalum capacitor
    PINK 220 ohm resistor
    PURPLE = dont worry has been omitted

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    Senior Member z80's Avatar
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    took you 7 minutes....what's the holdup mate?

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    lol he was probably reboot with 486 dx 66mhz machine with 33kb dial up

    Chieflets

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    here are some pics of the hummies i've done internal seasons on:
















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    ...there sure are some talented constructors on this forum.

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    **** this attachment process...

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    Quote Originally Posted by z80 View Post
    ...there sure are some talented constructors on this forum.
    i am but a meer apprentice where these setups are concerned TT is the master and his setup is a master piece

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    this is shitting me to tears....



    .

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    Here we go..last try...



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    Quote Originally Posted by fandtm666 View Post
    i am but a meer apprentice where these setups are concerned TT is the master and his setup is a master piece

    If only he wasn't too shy to post pics of his setup..a masterpiece to be sure.

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    If you don't want to etch a pcb it is quite simple to build on a piece of stripboard. I built one a few weeks ago using circuit similar to the one posted by Z80. Hard wired it inside humax and it works fine.

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    Have a look at the maxim website you can get versions of the max232 that dont need capacitors, just one resistor and you have a season interface.


    Look at the max233 chip.




    on the max233 the capacitors are replaced with pins just being shorted externally.

    I have built them and they are a piece of cake to make.

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    Yes - I was going to mention that too. I remember when i first walked into Jaycar few years ago asking for that chip they said it didn't exist but then again what do you expect from jaycar? ended up getting one from farnells

    good mention z80

    Chieflets

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    LOL...I get them from Jaycar now...the price of 4 tantalum caps is about the price difference of the chip.

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    Quote Originally Posted by z80 View Post
    If only he wasn't too shy to post pics of his setup..a masterpiece to be sure.
    Surely you don't mean me and my mod do you ... ?


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    thats the one TT a master piece of work and a hell of a lot of time spent on developing that board .

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    Quote Originally Posted by z80 View Post
    Have a look at the maxim website you can get versions of the max232 that dont need capacitors, just one resistor and you have a season interface.


    Look at the max233 chip.




    on the max233 the capacitors are replaced with pins just being shorted externally.

    I have built them and they are a piece of cake to make.
    Might be a silly question but whats the circuit like is it the same just leave the caps out?

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