Using the SX28 Plug on the PDB to House a BS2

Unable to bear the thought of throwing away a perfectly good BASIC Stamp 2 for cause of broken pins, I decided to make a custom adapter to fit the thing into the SX28 plug on my PDB. Currently, I have half of the I/O done, along with power and reset.
My question: How do I wire up the RS-232 DCE on the bottom of my PDB? I know it has Rx/Tx, which are included in the BS2 programming connection. Are there any pins on it which correspond to DTR?
The greatest thing about logic is that, once you have followed the thought train, it is then your own.

Comments

  • 10 Comments sorted by Date Added Votes
  • microcontrollerusermicrocontrolleruser Posts: 1,155
    edited December 5 Vote Up0Vote Down
    AwesomeCronk

    PDB manual has diagram of RS232 connector.

    RX, TX,CTS and RTS.

    Do not see a DTR.
    Experimenter

    WANTED SX BLITZ JAVELIN STAMP P24 & P40 DEMO BOARD SX48/52 BOARD APPMODS NO JUNK

  • That RS232 interface on the PDB does not have a DTR connection on the DB-9 connector.

    See definition of DTR here.

    https://en.wikipedia.org/wiki/Data_Terminal_Ready

    If it had one it would be on pin 4 of connector. That is not connected to anything.
    Experimenter

    WANTED SX BLITZ JAVELIN STAMP P24 & P40 DEMO BOARD SX48/52 BOARD APPMODS NO JUNK
  • AwesomeCronk,

    You can't have an SX and a BS2 on the PDB at the same time because they share pins.
  • Which pins?

    I am making an adapter to put ANOTHER BS2 in the sx socket.
    The greatest thing about logic is that, once you have followed the thought train, it is then your own.

  • Genetix

    Yes. You can have a BS2 module with the SX sitting there in it's socket.

    Only one you have to take it out for is the BS2p40 module.

    Awesome Cronk

    Are you making an adapter for the BS2 module or DIP (Parallax calls it an OEM)?

    Experimenter

    WANTED SX BLITZ JAVELIN STAMP P24 & P40 DEMO BOARD SX48/52 BOARD APPMODS NO JUNK

  • Awesome Cronk

    If you are using the BS2 DIP you can look at the schematic for this and it'll probably help connect it up.

    https://www.parallax.com/product/27291

    If you are using a module would't it be easier to just plug it into the module socket?
    Experimenter

    WANTED SX BLITZ JAVELIN STAMP P24 & P40 DEMO BOARD SX48/52 BOARD APPMODS NO JUNK
  • @microcontrolleruser
    BS2-IC, 24pin.
    The greatest thing about logic is that, once you have followed the thought train, it is then your own.

  • Awesome Cronk

    Sounds like it is a module.

    Why don't you just plug it into the socket that is made for it?

    You can leave the SX28 in the SX socket while using all the Stamp modules except for the BS2p40.

    That uses some of the same circuits on board as the SX.
    Experimenter

    WANTED SX BLITZ JAVELIN STAMP P24 & P40 DEMO BOARD SX48/52 BOARD APPMODS NO JUNK
  • Because I already have a BS2 on the board. I want two. I don’t want an sx.
    The greatest thing about logic is that, once you have followed the thought train, it is then your own.

  • AwesomeCronk

    Okay. Not the way I would do it but it's your PDB board.

    Sounds like your all set.
    Experimenter

    WANTED SX BLITZ JAVELIN STAMP P24 & P40 DEMO BOARD SX48/52 BOARD APPMODS NO JUNK
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