We found multiple times that inserting time delays between
functional blocks will eliminate ‘skipping’ or unexpected
behavior. Time delay will allow motion to settle and inertia to dissipate
allowing sensors to start from a stable platform.
Time is of the essence so delay does not need to be great –
sometimes fraction of a second is enough.
Good luck to all
Configurators
From: First Lego
League in Virginia and DC [mailto:[log in to unmask]] On Behalf Of Rusty West
Sent: Tuesday, November 03, 2009
3:03 PM
To: [log in to unmask]
Subject: Re: [VADCFLL-L]
Programming/brick problem
Ditto,
We have had the same problem.
Sometimes it skips blocks and other times it doesn’t. We verified
it by putting in sound beeps in certain areas and it skipped those beeps and
the movement blocks. We are just going to hope we get one good run when
it doesn’t skip blocks. The overall program is good and the kids
have thought it through. I have no idea why it is skipping blocks and
haven’t found a solution. If anyone finds a solution please post
it.
Rusty West
Team 350
VDOT BOTS
From: First Lego
League in Virginia and DC [mailto:[log in to unmask]] On Behalf Of Sonya Shaver
Sent: Tuesday, November 03, 2009
2:36 PM
To: [log in to unmask]
Subject: Re: [VADCFLL-L]
Programming/brick problem
I'm sorry Sherene. I don't have any answers, just to say that our
robot is doing weird things at times too. Like we will run a certain
program and then it just starts skipping steps that are in the program, for
seemingly no reason. It will do that three or four times, then suddenly start
working again. I have no idea. We are getting it to work most of
the time though. It sounds like what you are going through is really
frustrating! I would encourage you to not pull the plug on your team
competing though. That seems unfair to them with all their hard work.
The robot game is only 25% of their total score. They will still be
able to talk to the judges about their robot design and programming, even if
their robot does nothing on the actual table. And they will give their
presentation, and show their teamwork! Good luck, and I hope someone can
answer here!
Sonya in
On Tue, Nov 3, 2009 at 1:45 PM, Sherene Silverberg <[log in to unmask]>
wrote:
We're having a huge problem with our robot.
the programs are not downloading from the computer to the brick
properly. Despite the message on the computer saying it the program has
uploaded, it is hit or miss if it does.
We're running firmware version 1.28 on Mac OS 10.5.8.
I've done the Mac OS 10.5 firmware fix as indicated here
http://mindstorms.lego.com/support/updates/.
The programs never run the same way twice. It's like the NXT brick has
a life of its own. We deleted all the programs on the brick and
then downloaded just one of the programs. When we ran the program, it
bore no resemblance to the one we uploaded. Rather, it looked like
another one on the computer that goes by a different name.
I thought to try to reset the brick but for the life of me I cannot
find any reset button. Apparently "The hardware
reset button is located within the LEGO TECHNIC hole below the USB connector on
the NXT brick.".
For the life of me, I cannot find this hole.
If I can't find a solution ASAP, I am going to pull the
plug on the team competing. We cannot waste any more hours trying to fix
buggy Lego equipment.
Can anyone help me? I'm at the end of my tether.
thanks
Sherene