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Professional Development Board

USMCinfinityUSMCinfinity Posts: 150
edited 2010-08-14 01:00 in Propeller 1
Is the Propeller USB version compatible with the PDB?

Comments

  • Duane DegnDuane Degn Posts: 10,588
    edited 2010-08-12 13:53
    Do you mean the PropStick USB? If so, no. The 40 pin connector is wired wrong for the PropStick.

    As far as I can tell (from the schematics) the only way to use a Propeller with the PDB is to use a DIP version on the breadboard. I don't think the PDB has 3.3V so you'll also need 3.3V regulator of some sort.

    Duane

    Edit: I just noticed the PropStick has its own voltage regulator. You could supply 5V to Vin (pin 11) on the PropStick. You still need to use it on the breadboard.
  • localrogerlocalroger Posts: 3,452
    edited 2010-08-12 16:38
    Duane, there is a Propeller PDB. I don't know about the propstick but you can definitely use a DIP40 P8X32A with it, because that's what it's designed for.

    Actually, thinking about it, putting the propstick on the breadboard is pretty much a universal solution; just ignore the built-in socket whether it's the PPDB or Stamp PDB and wire the propstick up to power and the various peripherals.
  • Duane DegnDuane Degn Posts: 10,588
    edited 2010-08-12 21:42
    localroger, I assumed USMCinfinity meant the non-Propeller Professional Development Board.
    ProfessionalDevelopmentBoard.jpg

    I have a couple of the Propeller Professional Development Boards and really like them (thanks deal of the day).
    PropellerProfessionalDevelopmentBoard.jpg

    I'm not sure about using a PropStick in a Propeller Professional Development Board. The pinouts (on the PropStick) are pretty close to a Prop DIP. The Stick has a Vin where a Vdd is on the DIP but I wouldn't think that would hurt anything. My guess is it would work. But heck just get a DIP for $8 and not worry too much about abusing it (if using it with the Propeller PDB).

    I noticed the Professional Development Board is called "Parallax Professional Development Board" in the Parallax webstore so it and the "Propeller Professional Development Board" can both be abbreviated PPDB but all the times I've seen it (PPDB) the extra "P" means "Propeller."

    Duane
    ProfessionalDevelopmentBoard.jpg
    120 x 120 - 3K
    PropellerProfessionalDevelopmentBoard.jpg
    120 x 120 - 3K
  • SSteveSSteve Posts: 808
    edited 2010-08-13 11:43
    USMCinfinity wrote: »
    Is the Propeller USB version compatible with the PDB?

    If you're talking about the original BASIC Stamp version of the Professional Development Board, you can put the Propstick on the breadboard. That's what I did back in olden times: http://forums.parallax.com/showpost.php?p=586891&postcount=20

    I just ran +5V and ground from the PDB to the propstick inputs.
  • USMCinfinityUSMCinfinity Posts: 150
    edited 2010-08-13 15:33
    Yup, thats it, pardon me for asking but can you give me the schematics and code for that so I can try it out? I have't really used the propeller since I'm busy with the boebot but I would love to try that..
  • $WMc%$WMc% Posts: 1,884
    edited 2010-08-13 16:17
    http://www.parallax.com/Portals/0/Downloads/docs/prod/schem/PPDB_A_Schematic.pdf
  • SSteveSSteve Posts: 808
    edited 2010-08-13 16:21
    There's not really a schematic. I just stuck the PropStick onto the breadboard, connected the power and ground and connected an output pin to an LED on the PDB. I connected the PropStick to the computer and programmed it directly.

    There's a program to blink an LED in the Propeller Education Kit Labs: Fundamentals book in the section "Timing Delays with the System Clock." This one blinks an LED connected to pin 4.
    '' File: LedOnOffP4.spin
PUB LedOnOff
  dira[4] := 1
  repeat
    outa[4] := 1
    waitcnt(clkfreq/4 + cnt)
    outa[4] := 0
    waitcnt(clkfreq/4*3 + cnt)

    The PE Kit Labs book is a great introduction to the propeller. You can probably get through a lot of it with a Propstick and PDB. And thanks to Parallax's generous policy with their books, it's a free download.

    I hope that helps. Let me know if it doesn't.
  • USMCinfinityUSMCinfinity Posts: 150
    edited 2010-08-13 16:50
    Do you have one of those safety sockets to protect the pins? I posted another topic asking about it, do they come for a "dip" this big?
  • SSteveSSteve Posts: 808
    edited 2010-08-13 16:54
    No, I wantonly plugged the PropStick directly into the breadboard. I was just very, very careful when I pulled it out.
  • Invent-O-DocInvent-O-Doc Posts: 768
    edited 2010-08-13 19:35
    I really liked the old development boards audio amp and speaker! (Miss it and the basic 7 segs too)
  • SSteveSSteve Posts: 808
    edited 2010-08-14 01:00
    Invent-O-Doc wrote: »
    I really liked the old development boards audio amp and speaker! (Miss it and the basic 7 segs too)

    You can turn the new-fangled zillion-segment displays into 7-seg displays by connecting the segments that share a letter.
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