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Quick Start Board Questions - Page 2 — Parallax Forums

Quick Start Board Questions

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  • PublisonPublison Posts: 12,366
    edited 2012-09-19 08:42
    Also there are examples for the Quickstart board at:

    http://learn.parallax.com/KickStart


  • cavelambcavelamb Posts: 720
    edited 2012-09-19 22:42
    One more time and I'll give it a rest...

    Solderless breadboards are quick and convenient, and I do use one sometimes.
    But they are not very rugged. Can't be handled.
    (For sure can't be taped to a ceiling fan)

    So I've been building my own.
    To me it's no big deal.
    (Navy electronics training expects you to repair bullet holes in circuit boards)
    The circuitry is generally so simple that it doesn't take long to build.
    VERY few wires needed (as compared to say a Z-80 board).

    The wiring is a meld of wire-wrap and point-to-point solder.

    QuickStart audio out.
    Adding a TV connector would make it better.
    And an SD socket? (RTC? RAM?? LCD? ?)
    But all I needed was audio.

    These days I use a short dual row female header for Rs and Cs so they can be changed as needed.
    But this was the first one. We learn.
    It works.

    Attachment not found.


    Attachment not found.
    Attachment not found.Attachment not found.


    Another Quick board...

    !DSCF4566.JPG


    Optically Isolated transistors..
    It's driving a fairly heavy small solenoid (12v-2amps).
    But it's such a short duty cycle that I've noticed no serious heating.

    Now, imagine a small back plane that several Quick boards could be plugged into?

    !DSCF4551.JPG
    800 x 600 - 108K
    800 x 600 - 112K
  • cavelambcavelamb Posts: 720
    edited 2012-09-20 08:15
    treborz17 wrote: »
    I set up a 6VDC VIN on my QuickStart. How high and how low can we safely go?

    Also, Can the USB be plugged in and powered at the same time as the VIN pins 39 and 40 are energized?

    Robert

    I've used a 9 volt battery to run one.
    But no, the USB and battery should not be plugged in at the same time.
    The risk is damaging the USB port in the host computer.
  • cavelambcavelamb Posts: 720
    edited 2012-09-20 08:20
    A few things to consider when designing a new PCB board for the Quick.
    Where to locate things like video, key, mouse, etc?

    ! i-o mapB.JPG
    640 x 435 - 106K
  • blittledblittled Posts: 681
    edited 2012-09-20 09:26
    @cavelamb, where did you find that chart of pin outs for the various boards?
  • RDL2004RDL2004 Posts: 2,554
    edited 2012-09-20 09:50
    OBC (Jeff) had a chart like that in a guide he had written for the Propeller, but I don't know what I did with the pdf.
  • cavelambcavelamb Posts: 720
    edited 2012-09-20 14:08
    blittled wrote: »
    @cavelamb, where did you find that chart of pin outs for the various boards?


    It's in the back of my book, along with a bunch of other interesting stuff.

    I don't quite know what to do with it at the moment.
    Sure, I'd love to see it published and hanging on the hook next to the
    QuickStart board in Radio Shack. Who wouldn't?
    Time and events, though...
    The world (ie: newly booted Propeller Heads) needs a quick start book
    for the QuickStart board. Rather badly, in fact.

    Radio Shack (of all places) has a ton of Arduino stuff on the shelf theses days.
    They carry the QuickStart board too.
    They have a ton of documentation on the Arduino stuff.
    Books, hardware, code, everything.
    And ? for Propellers?

    I've asked a few people around here if they would be willing to proof for me.
    We are busy people, and what I ask would take considerable time.
    Forrest Mimms had ever circuit in his books built by three different guys.
    That way you know it works.
    But this is just simple code.
    Anyway, It sits on the hard drive waiting impatiently tapping its literary foot.

    I thought maybe Make.com might be interested (and styled the cover that way just for fun)
    It's right down their line. But haven't pursued it.

    I think it's about 72 pages at the moment. 6 meg in Word. 1.8 meg pdf.
    Stuff I picked up here and there, hunt and seek all over the web,
    answers from the forum, etc.

    What I wish I had at hand when I plugged in my first Propeller...

    !TOC2.JPG
    800 x 529 - 52K
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