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Want to play with a CH340T based Prop Plug? — Parallax Forums

Want to play with a CH340T based Prop Plug?

Martin HodgeMartin Hodge Posts: 1,246
edited 2016-05-31 23:42 in Propeller 1
I'll send it to you, free in the U.S. to keep, if you're interested.

(It would be nice if you were able to test it with various OS's and software and such.) >.>
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736 x 298 - 163K

Comments

  • David BetzDavid Betz Posts: 14,516
    What is the advantage of the CH340T over an FTDI chip?
  • David BetzDavid Betz Posts: 14,516
    Wait, there is no Propeller on this board that I can see. Is this a replacement for the PropPlug?
  • mindrobotsmindrobots Posts: 6,506
    I can test on Fedora Linux on PC, Raspbian, Win 7, Win 10, Mac OS X using Proptool, PropellerIDE, Simple IDE, BST, where appropriate..

    What all do you want tested: programming, terminal support, various speeds, ??
  • Martin HodgeMartin Hodge Posts: 1,246
    David Betz wrote: »
    Wait, there is no Propeller on this board that I can see. Is this a replacement for the PropPlug?

    Prop Plug, not Stick. My bad, Corrected.
  • David BetzDavid Betz Posts: 14,516
    Martin Hodge wrote: »
    David Betz wrote: »
    Wait, there is no Propeller on this board that I can see. Is this a replacement for the PropPlug?

    Prop Plug, not Stick. My bad, Corrected.
    No problem. I'd be happy to test your module with a new loader I'm working on as well as with propeller-load and p1load if it would help.

  • Heater.Heater. Posts: 21,230
    David Betz,
    What is the advantage of the CH340T over an FTDI chip?
    You don't have to install any malware from FTDI and risk having your system hosed.
  • User NameUser Name Posts: 1,451
    I'd be delighted to put your new Prop Plug to work. Unfortunately it would only see use with Win7 and PropTool as that is the only combination currently used for Propeller development here.
  • TorTor Posts: 2,010
    David Betz wrote: »
    What is the advantage of the CH340T over an FTDI chip?
    Isn't the CH340T much cheaper than a (real) FTDI chip? At least USB-serial cables seem to be cheaper for the ch3xx variants.

  • Martin HodgeMartin Hodge Posts: 1,246
    The CH340 is a USB to serial UART adapter like the FT232

    Pros.
    It's $0.50 or less direct from China.
    It's less stressful to the tinfoil hat types. ;)

    Cons.
    It requires external crystal and ballast caps
    It requires external vreg for 3.3v
    It requires external static clamping
    It requires external LED logic
    Not fully compatible with Propeller Tool (PT bug never fixed)
    Not available from reputable source like Digikey or Mouser

    Anyway, that's three spoken for, which is all I have. I will be pm'ing for addresses soon. Thanks!
  • jmgjmg Posts: 15,173
    Martin Hodge wrote: »
    The CH340 is a USB to serial UART adapter like the FT232

    Pros.
    It's $0.50 or less direct from China.
    It's less stressful to the tinfoil hat types. ;)

    Cons.
    It requires external crystal and ballast caps
    It requires external vreg for 3.3v
    It requires external static clamping
    It requires external LED logic
    Not fully compatible with Propeller Tool (PT bug never fixed)
    Not available from reputable source like Digikey or Mouser
    That's quite a few cons..

    Why not use a CP210x, or CP2110, or mini module ?
    http://www.digikey.com/product-detail/en/silicon-labs/CP2104-MINIEK/336-2613-ND

  • Martin HodgeMartin Hodge Posts: 1,246
    Here are the Diptrace files. I'm going to relegate this design to "proof of concept". No plans to sell them.
    zip
    zip
    CH340T.zip
    246K
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