NXT brick freeze on LEJOS LOGO

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BVB
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NXT brick freeze on LEJOS LOGO

Postby BVB » Mon Apr 06, 2015 5:13 pm

Hi there,

I'm using Lejos nxj 2.0 0.9.1 beta-3 on windows 7 64bit

When i flash the brick and it's done successful the brick freeze on LEJOS LOGO

i solved it by removing the battery for seconds but it's annoying that every time brick freeze i have to remove the battery

i installed the driver correct and i tried on windows 8 but still freezing

Can you till me what's wrong?

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gloomyandy
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Re: NXT brick freeze on LEJOS LOGO

Postby gloomyandy » Mon Apr 06, 2015 5:29 pm

So is this something new? You seem to have been using leJOS for some time. Has this freezing only just started? If so what is different from before?

When you say that it freezes does it freeze only when you flash new firmware? Every time you run leJOS? Please describe exactly what it is you are doing and when exactly does leJOS freeze?

What happens if you use the leJOS reset key sequence (enter + escape keys bot pressed at the same time - that is the orange button and the rectangular button pressed at the same time).
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BVB
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Re: NXT brick freeze on LEJOS LOGO

Postby BVB » Mon Apr 06, 2015 7:47 pm

Hi man it was work correctly and i uploaded some program on it and it's run correctly

but i run another program after that it start freezing

it happened to me before i solved by changing the battery i did that now but it wont work

when i pressed enter + escape keys the brick restart but it freeze again

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Re: NXT brick freeze on LEJOS LOGO

Postby skoehler » Mon Apr 06, 2015 7:52 pm

Did you enable auto-run by any chance?
Hold down the LEFT button for a while when turning on the NXT. Does the NXT then show the normal menu again?

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Re: NXT brick freeze on LEJOS LOGO

Postby BVB » Mon Apr 06, 2015 8:39 pm

No man

but there is something weird i hit the brick on front by my hand and it's work!!!!

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Re: NXT brick freeze on LEJOS LOGO

Postby BVB » Mon Apr 06, 2015 10:02 pm

skoehler wrote:Did you enable auto-run by any chance?
Hold down the LEFT button for a while when turning on the NXT. Does the NXT then show the normal menu again?



i flashed it back to "LEGO MINDSTORMS NXT 2.0" and it works perfect but when i flash it to "Lejos" it freeze

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gloomyandy
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Re: NXT brick freeze on LEJOS LOGO

Postby gloomyandy » Mon Apr 06, 2015 10:52 pm

I still don't understand what you mean by freeze when exactly does it freeze...
Has it played the start up tune?
What happens if you press a button is there any beep?
What happens if you connect it to your PC via USB is it recognized?
Can you run nxjbrowse and does it find the NXT?
When you flashed leJOS did nxjflash ask if you wanted to format the file system? If so did you say yes?
When you flashed the LEGO firmware, how did you do it? Did you have to press the hardware reset button?
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Re: NXT brick freeze on LEJOS LOGO

Postby BVB » Tue Apr 07, 2015 5:18 am

gloomyandy wrote:I still don't understand what you mean by freeze when exactly does it freeze...
Has it played the start up tune?
What happens if you press a button is there any beep?
What happens if you connect it to your PC via USB is it recognized?
Can you run nxjbrowse and does it find the NXT?
When you flashed leJOS did nxjflash ask if you wanted to format the file system? If so did you say yes?
When you flashed the LEGO firmware, how did you do it? Did you have to press the hardware reset button?


Yes it played the start up tune but when the LEJOS logo appear the brick stop on the LEJOS logo the menu didn't show

Nothing happen if i press any button except when i press (Enter + escape ) brick will restart

if you connect USB PC not recognized it

i nxjbrowse DO NOT find the NXT

When i flashed leJOS nxjflash ask if you wanted to format the file system select YES

i flash LEGO firmware with Mindstorm NXT 2.0 App

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gloomyandy
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Re: NXT brick freeze on LEJOS LOGO

Postby gloomyandy » Tue Apr 07, 2015 1:32 pm

With the LEGO firmware installed can you use a Bluetooth connection? When you installed the LEGO firmware did you have to reset the NXT using the reset button hidden on the back of the NXT?
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Re: NXT brick freeze on LEJOS LOGO

Postby BVB » Tue Apr 07, 2015 2:02 pm

gloomyandy wrote:With the LEGO firmware installed can you use a Bluetooth connection? When you installed the LEGO firmware did you have to reset the NXT using the reset button hidden on the back of the NXT?


Yes i can use Bluetooth

i used reset button to install LEGO firmware

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gloomyandy
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Re: NXT brick freeze on LEJOS LOGO

Postby gloomyandy » Tue Apr 07, 2015 2:20 pm

In which case no idea what is wrong. I have never seen this problem before. Something must have change since you were using it before. The VM is running (which is why enter+ escape works), but the menu seems to be locked up waiting for something. The only thing I can suggest is that you run the LEGO software and disable Bluetooth and then try leJOS again. Other than that what exactly happened when you "hit the brick on front by my hand", have you tried doing that again? It may be there is some sort of loose/bad connection.
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Re: NXT brick freeze on LEJOS LOGO

Postby skoehler » Tue Apr 07, 2015 2:51 pm

We have seen all sorts of issues with the bluetooth module. So I also bet it's the bluetooth modul. And I bet the Lego software is ignoring the issue (as usual).

So my question is: does the NXT's bluetooth work if the NXT runs the Lego firmware?

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Re: NXT brick freeze on LEJOS LOGO

Postby BVB » Tue Apr 07, 2015 3:36 pm

skoehler wrote:We have seen all sorts of issues with the bluetooth module. So I also bet it's the bluetooth modul. And I bet the Lego software is ignoring the issue (as usual).

So my question is: does the NXT's bluetooth work if the NXT runs the Lego firmware?


I just tried to turn Bluetooth on from The brick but it failed

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gloomyandy
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Re: NXT brick freeze on LEJOS LOGO

Postby gloomyandy » Tue Apr 07, 2015 4:59 pm

So when I asked earlier if you could open a Bluetooth connection to the NXT?

Anyway if you can't turn Bluetooth on from the LEGO firmware, then something is wrong. You have two choices:
1. Contact LEGO support and see if they can help.
2. Open up the NXT and see if there is some sort of dodgy connection. The Bluetooth module is a separate PCB:
http://www.jstuber.net/lego/nxt-program ... dware.html
If you do decide to open it be very careful it is very easy to damage the speaker and/or connections to it. If you do open it and it all goes wrong don't blame me or anyone else, it is your decision.
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