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ISP AVR programmer - eBay

Discussion in 'Electronic Basics' started by Robert, Jun 1, 2005.

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  1. Robert

    Robert Guest

  2. Yoda

    Yoda Guest

    No offense, but if $3 is too much for you to pay for a programmer, you
    should probably find another hobby.


    ----- Original Message -----
    From: "Robert" <>
    Newsgroups: sci.electronics.basics
    Sent: Wednesday, June 01, 2005 2:58 AM
    Subject: ISP AVR programmer - eBay

    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=50915&item=7519278787
    &rd=1&ssPageName=WDVW
    http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&category=50915&item=7519278787
    &rd=1&ssPageName=WDVW
     
  3. ryan wiehle

    ryan wiehle Guest

  4. Robert

    Robert Guest

  5. Rich Grise

    Rich Grise Guest

    Problem is, that's not a programmer. It's a cable. To make a programmer,
    you need both the development board, or actual programmer, and the
    applicable software driver, which the seller gives a list of, but
    no indication that any of it is included.

    For a cable, it's not a bad price, but do you have the rest of the
    components already?

    Interestingly, I saw the same thing advertised here a week or so ago.
    Give it another pass, and chances are the guy will be giving it away
    for 0.01 + shipping next time.

    Good Luck!
    Rich
     
  6. Are you sure? I've seen lots of AVR programmers that look just like that.
    The protocol is bit-banged on the parallel port pins, so the interface
    circuitry is hardly anything and it fits inside the db25 shell. See for
    example

    http://www.olimex.com/dev/avr-pg2b.html

    at 10 USD each, and I know that one works.

    Jonathan
     
  7. It is not just a cable, It is a cable, a few resistors, a
    d-sub-connector, and a connector for the processor board.

    It is enough hardware to program an AVR processor.

    It is so easy to build that there is no reason to buy one.

    The schematic is widespread and well known by AVR users. For example if
    you download the BASIC programming program and look in its help file,
    there are schematics for this "cable".

    The connector used at the processor end is, of course, up to yourself
    to choose. The most lightweight solution is no connector at all. Just
    solder the wires to the processor circuit during the programming. This
    solution takes a minimum of board space on the processor board you are
    building/programming.

    It is correct to call this "cable" a programmer, as it is the only
    hardware necessary.
    The programmer software is free to get from the manufacturer and users
    of AVR processors.
     
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