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Proto board red programming light holds on, chip burning hot. --fixed w/ a prop — Parallax Forums

Proto board red programming light holds on, chip burning hot. --fixed w/ a prop

P!-RoP!-Ro Posts: 1,189
edited 2010-06-18 05:05 in Propeller 1
Just over night the board stopped working, but it already has everything I need soldered on to it. I tested the USB connection with a second·proto board·and it works fine, but not the board that I need. If I have to I'll change the board to make it work with a prop plug, but I'd rather try something else first.

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90 * 2 = Pi

Post Edited (pi'd) : 6/18/2010 5:29:38 AM GMT

Comments

  • hover1hover1 Posts: 1,929
    edited 2010-06-17 20:35
    Sounds like your FT232 is fried. You could wire up the RS-232 port on the PPDB for programing if you have a a USB to RS-232 adapter:

    ·http://www.parallax.com/StoreSearchResults/tabid/768/txtSearch/RS232/List/0/SortField/4/ProductID/378/Default.aspx

    but you would have to remove the FT232 off the board because it may be affecting P30 and P31, (continually holding the pins high or low).
    You could also lift P30 and 31 out of the socket and solder·wires to them to connect to the MAX3232 port without removing the FT232.

    But the FT232 being damaged may cause power problems on the board, (shorts and what not), so the are no gurantees.

    Jim
  • P!-RoP!-Ro Posts: 1,189
    edited 2010-06-17 21:06
    Good idea, I'll probably lift the FT232 off the board and make a connector for those two pins to the propstick prop plug. If that chip really is the problem then I'll get a replacement at upew. I just wish I knew how it stopped working?

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    90 * 2 = Pi

    Post Edited (pi'd) : 6/18/2010 5:31:12 AM GMT
  • hover1hover1 Posts: 1,929
    edited 2010-06-17 21:15
    "I'll probably lift the FT232 off the board and make a connector for those two pins to the propstick."

    Could you explain that?

    The Propstick already has a USB connection. The only reason to remove the FT232, is that it might be creating a short somewhere and dragging you supply voltage down.

    Do pull the Propeller chip out if you use the ProStick, just to be safe.
  • P!-RoP!-Ro Posts: 1,189
    edited 2010-06-17 21:57
    Lol sorry I didn't mean the propstick but I can't look up what I want since parallax home can't be viewed on my phone. Just a usb programmer is all, not a second prop!

    EDIT: meant the prop plug--oops

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    90 * 2 = Pi

    Post Edited (pi'd) : 6/17/2010 11:52:16 PM GMT
  • P!-RoP!-Ro Posts: 1,189
    edited 2010-06-18 05:05
    Well, now I can get back to programming my robot. Looks a little funny, however. Also, Parallax, could you make a solder point for the reset pin besides the reset button itself? I think I melted it a little.

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    90 * 2 = Pi
    1600 x 1200 - 376K
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