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Need Help - Propeller Beginner — Parallax Forums

Need Help - Propeller Beginner

MicrocontrolledMicrocontrolled Posts: 2,461
edited 2008-10-24 05:15 in Propeller 1
Hi. I'm new to the forum and could use some help. I have just started learning the programing process for the Propeler (I have already learned the Basic Stamp) and have been running some small programs to the propeller though a serial connection using the schematic on the propeller information page on the Parallax website. I origanally had the propeller on a small soderless breadbord and the programmer on there too. All the programs ran fine untill I put the progaming module on a different breadboard because I ran out of space. I·finally moved the chip and every thing to a bigger breadboard.·When I plugged in the programer it said that the propeller chip was not detected. I checked the connections and everything seems fine, but it still isn't working. Is the Propeller itself not working? Is it the programmer? Should I order the Prop Plug to use insted? Please Help! confused.gif

Comments

  • BTXBTX Posts: 674
    edited 2008-10-23 14:51
    Hi.
    Check, if the propeller is correctly powering in the new board.
    Sorry ... I mean if it has 3.3Vcc at power pin. and correctly grounded.

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    Regards.

    Alberto.
  • MicrocontrolledMicrocontrolled Posts: 2,461
    edited 2008-10-23 15:02
    Thanks, But the power should be working fine. However, if this is inportant, I have it hooked up to 5 VDC but it was allways working until now.

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    Thank You For Reading! Please Respond!!!

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  • BTXBTX Posts: 674
    edited 2008-10-23 15:36
    Sorry...did you mean that you power the propeller with 5Vcc ????
    I hope not. [noparse]:)[/noparse]

    If previous you'd all working fine, try again with wires, should be something wrong..or simply the pchip die. (Although it is not commonly ...at least for me).

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    Regards.

    Alberto.
  • MicrocontrolledMicrocontrolled Posts: 2,461
    edited 2008-10-23 16:16
    Yes, I did mean I powered it with 5Vcc. I was using the power source on the Basic Stamp Board of Education. I cannot see how the chip could just die, considering I received it less than a week ago. Thanks for the help!

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    Thank You For Reading! Please Respond!!!

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  • BTXBTX Posts: 674
    edited 2008-10-23 16:56
    This is why you fried the chip.

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    Regards.

    Alberto.
    propeller.jpg
    640 x 360 - 60K
  • MicrocontrolledMicrocontrolled Posts: 2,461
    edited 2008-10-23 17:06
    Thank You for the help. Next time I will order a 3.3 volt power regulator. I simply assumed that the Basic Stamp and the Propeller took the same voltage amount, and its not as if the voltage bothered it before,(I think it didn't because the battery was low, and it stopped working after I replaced the battery), so I never thought a regulated 5v would fry the chip. Next time I'll check the charts. In the meantime, I guess I'll work on my Basic Stamp. Thanks for the Help.

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    Thank You For Reading! Please Respond!!!

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  • sylvie369sylvie369 Posts: 1,622
    edited 2008-10-23 22:16
    There are quite a few 3.3V devices out there now: it is clearly a second standard. You'll definitely want to make a habit of looking at the datasheets for devices you're using to check on this.
  • SRLMSRLM Posts: 5,045
    edited 2008-10-24 05:15
    When you get a new chip, be sure to get a 3.3v regulator. You can see how to hook it up in the PE Labs.
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