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Simple LCD problem (I Hope) — Parallax Forums

Simple LCD problem (I Hope)

Carol HazlettCarol Hazlett Posts: 312
edited 2010-04-09 20:22 in Robotics
I am building a homegrown Bot using a BOE Rev C, to go with my older BoeBot which uses the BOE Rev B.· I have two of the little AppMod LCD's· but
while it works fine on the Rev C board it will not work at all on the Rev B board.· I did a lot of searching through the Parallax literature and searched this forum also but have not found a specific reference to this.· Thanks ahead for any help.

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The second childhood is the best because now·you have money for toys.

Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2010-04-09 17:32
    Hello,

    Are you saying if you move a working LCD AppMod from the RevC Board to the Rev B board it stops working even with the same code and same BASIC Stamp Module?

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    Chris Savage

    Parallax Engineering
    ·
  • Carol HazlettCarol Hazlett Posts: 312
    edited 2010-04-09 18:07
    Exactly.· I have two LCD Appmods, and both work fine on the Rev C but neither works on the Rev B board.· Yes I did use the same code on both boards.

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    The second childhood is the best because now·you have money for toys.
  • Carol HazlettCarol Hazlett Posts: 312
    edited 2010-04-09 18:09
    BTW I am not usung the same Basic Stamp, each board has it's own stamp but they are both BS2's.

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    The second childhood is the best because now·you have money for toys.
  • Carol HazlettCarol Hazlett Posts: 312
    edited 2010-04-09 18:15
    I just looked at the two stamps, the older one is a rev E and the newer is rev J.· Could that be the problem?

    Is there a way to make·the appmod·work with the older stamp?


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    The second childhood is the best because now·you have money for toys.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2010-04-09 18:28
    You should swap the BASIC Stamp Modules in case one had a bad I/O pin causing the issue.

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    Chris Savage

    Parallax Engineering
    ·
  • Carol HazlettCarol Hazlett Posts: 312
    edited 2010-04-09 19:22
    Okay, so the issue is not a different installation on the older board but maybe a bad pin on my old stamp.· That is something· I can definitely check out.· Thanks,· I am going back to work on my bots now.

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    The second childhood is the best because now·you have money for toys.
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2010-04-09 20:22
    It certainly could be that. This is one of those cases where you have to remove all variables until all you have left are knowns. If swapping the BASIC Stamps doesn't make the problem follow, then it may well be something with the board. The trick is to also test the Rev C board with the BS2 from the RevB Board. See if the problem follows as well as if the problem board starts working.

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    Chris Savage

    Parallax Engineering
    ·
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