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November 2008

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Subject:
From:
David Levy <[log in to unmask]>
Reply To:
David Levy <[log in to unmask]>
Date:
Wed, 26 Nov 2008 17:12:18 -0500
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Tracy,
If you can't upgrade to 1.1 (and the latest firmware) then I'd suggest  
that you insert a sound block before and after the offending block.    
If from time time you don't here the chime then it may be an  
indication of a memory leak ( as opposed to a physical stall condition  
during the execution of the offending block).

Using my-blocks may provide you some slack.

Sorry I could not be of more help.

Happy Thanksgiving

David

On Nov 26, 2008, at 4:34 PM, Tracy Reed wrote:

> David,
>
> We started up the NXT ( we have version 1.0) fresh today, after a  
> good rest. and everything worked fine, it took the block plus  
> several more!  We did discuss one common factor, this seems to  
> happen after the robot has been in use for maybe 2 or so hours with  
> LOTS of programming or changes to a program.  Any thoughts?
> The blocks are no longer on the program for me to attatch, the  
> student took them off when he could not get them to work.  I did  
> look at them and they were simple move blocks, ports b and c, 75 %  
> power, 2 rotations, brake.  The original block was done in degrees,  
> they have learned how to access the view window and push  the robot  
> manually  to it's desired stopping point and then key in the degrees  
> on the move block.
>
> Thanks,
> Tracy
>
> In a message dated 11/26/2008 10:24:12 A.M. Eastern Standard Time, [log in to unmask] 
>  writes:
>
> In that case the obvious answer is out of  memory error when  
> downloading
> but from what you are saying there is no such error and it appears to
> download just fine.  Therefore I think you are making a assumption  
> that
> the block was not included.    There may be physical conditions where
> they block does not appear to run.
> Can you you attach your program?
>
> Also do you want to cc the listserv again since there are a couple of
> others that have chimed in?
>
> David
>
> [log in to unmask] wrote:
> > Hi David,
> > Yes, a team member had 15 blocks and added another and it would not
> > transfer it to the NXT.  He also added 4 identical blocks and they
> > would not download.   We have also had this problem where we would  
> add
> > a move forward mini move it would not pick it up on the NXT so we
> > would put an identical move block in front of it and it would take
> > it?  I will be sure the kids are "saving" the new move before
> > downloading.  It happens sporadically. There is no problem dragging
> > the move block and having it show up on the computer screen, it just
> > does not always transfer to the brick. We download and it  
> downloads as
> > always (compiling info is up on the screen and we get the beep when
> > finished) There does not seem to be any rhyme or reason to this, it
> > has only happened with one or two long programs.  We reboot  
> everything
> > and keep playing with it and usually it will end up taking it so  
> we go
> > back and delete the "phantom blocks that are identical" and all is
> > well.      I was reading up on My blocks to see if that would  
> help. I
> > can't find anywhere in the NXT book where there are limitations on
> > blocks in a program.
> >
> > Thanks,
> > Tracy
> >
> >
> > In a message dated 11/26/2008 9:15:18 A.M. Eastern Standard Time,
> > [log in to unmask] writes:
> >
> >
> >     Hi Tracy,
> >     What do you mean by " it will not take anymore "?    Is it that
> >     you can
> >     not drag in another block, save the program, download to the  
> brick?
> >     David
> >
> >     Tracy Reed wrote:
> >     >
> >     > Hi,
> >     > I was wondering if anyone knows what the # of move blocks a  
> single
> >     > program can use.  It seems we are writing programs and when we
> >     get to
> >     > approx. 15 blocks it will not take anymore.  Is there a way
> >     around this?
> >     >
> >     > Your input is greatly appreciated.
> >     >
> >     > Tracy Reed
> >     > 4-H L.E.A.D Huskies
> >     >
> >     >
> >     >
> >     >
> >     >
> >      
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