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The new Spin Stamp — Parallax Forums

The new Spin Stamp

NewzedNewzed Posts: 2,503
edited 2007-05-09 16:23 in Propeller 1
Any news of the availability of this chip?

Sid

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Yesterday is history, tomorrow is a mystery, and today is a gift.

That is why they call it the present.

Don't have VGA?
Newzed@aol.com
·

Comments

  • Paul BakerPaul Baker Posts: 6,351
    edited 2007-05-07 21:46
    The only thing left before we manufacturer it is writing a test procedure for the modules, and I will be working on that this week.

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    Paul Baker
    Propeller Applications Engineer

    Parallax, Inc.
  • NewzedNewzed Posts: 2,503
    edited 2007-05-07 23:27
    Paul, I plan on using the Prop Plug with the Spin Stamp.· I have Rx connected to Pin 2 (Sin), Tx to Pin 1 (Sout), Res to Pin 3 (ATN) and Vss to Vss.· Is that correct?

    Thanks

    Sid

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Yesterday is history, tomorrow is a mystery, and today is a gift.

    That is why they call it the present.

    Don't have VGA?
    Newzed@aol.com
    ·
  • Mike GreenMike Green Posts: 23,101
    edited 2007-05-07 23:46
    Sid,
    The Spin Stamp already has the TTL to RS232 adapter built-in just like the other Stamps so I'm not sure you can use the Prop Plug with pins 1-3. The Propeller programming is done using a Prop Clip applied to a set of pads on the end of the substrate. If you want to use a Prop Plug, you could carefully solder a 4-pin right angle 0.1" header to this area since there are 4 holes mostly filled with solder there.

    If you have a USB BOE, you could plug a Spin Stamp into its socket and use the existing on-board USB to serial adapter for data, but not for programming. I suppose you could use the same circuit as the USB-BOE with pins 1-3. I'm just not sure what it is.
    Mike
  • Paul BakerPaul Baker Posts: 6,351
    edited 2007-05-08 00:00
    The Spin Stamp's RS232 functionality is not supported at this time and this is not how you program it (as Mike has pointed out). The level shift transistors are present but referenced against 3.3V so they are not high enough to trigger minimum RS232 levels.

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    Paul Baker
    Propeller Applications Engineer

    Parallax, Inc.
  • NewzedNewzed Posts: 2,503
    edited 2007-05-08 00:07
    So how do I program the Spin Stamp?· I using just the chip on my own board.

    Sid

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Yesterday is history, tomorrow is a mystery, and today is a gift.

    That is why they call it the present.

    Don't have VGA?
    Newzed@aol.com
    ·
  • Paul BakerPaul Baker Posts: 6,351
    edited 2007-05-08 00:10
    There are 4 holes on the edge of the board that a PropClip fits onto. If you are careful you can solder a 4 pin header into the holes to use a PropPlug.

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    Paul Baker
    Propeller Applications Engineer

    Parallax, Inc.
  • NewzedNewzed Posts: 2,503
    edited 2007-05-08 00:13
    Paul, I wanted to use my own board.· What pins do the Prop Clip connect to?· I could duplicate that on my board.

    Sid

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Yesterday is history, tomorrow is a mystery, and today is a gift.

    That is why they call it the present.

    Don't have VGA?
    Newzed@aol.com
    ·
  • Paul BakerPaul Baker Posts: 6,351
    edited 2007-05-08 00:22
    They dont, here's a sneak peak at one of the drawings, the programming is done on the bottom 4 holes.

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    Paul Baker
    Propeller Applications Engineer

    Parallax, Inc.
    zip
    zip
    Spin Stamp w-pins.zip
    59K
  • whickerwhicker Posts: 749
    edited 2007-05-09 02:55
    pins 1,2,3 being "do not connect" seems a little weird imho.
  • Mike GreenMike Green Posts: 23,101
    edited 2007-05-09 03:50
    Paul,
    I guess I don't understand about the referencing of pins 1, 2, and 3 to +3.3V. I was able to use the DB9 connector on the BOE that I was using with the alpha version of the Spin Stamp to connect via a Keyspan USB to serial adapter to my laptop. I thought the output transistor was referenced to the +5V supply on the substrate. I know it's referenced to Sin for the negative supply.
  • Paul BakerPaul Baker Posts: 6,351
    edited 2007-05-09 04:13
    We were unable to get reliable communication of SOUT when connected with some PCs, rather than having a deluge of phone calls asking why it doesn't work we have chosen not to support its feature at this time. For those that can make it work, great; but we make no promise that it will.

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    Paul Baker
    Propeller Applications Engineer

    Parallax, Inc.
  • bambinobambino Posts: 789
    edited 2007-05-09 12:22
    So when the alpa stamp works with a PC it is doing so at 3.3Vs? That is one for area 54!
  • Paul BakerPaul Baker Posts: 6,351
    edited 2007-05-09 16:23
    No, the chip is not programmed through the SIN and SOUT like on the Basic Stamp, it is programmed via a PropClip. The serial port is there for legacy reasons.

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    Paul Baker
    Propeller Applications Engineer

    Parallax, Inc.
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