Subject:
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Re: HELP! NXT brick flash now read-only!!
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Newsgroups:
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lugnet.robotics
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Date:
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Mon, 5 Feb 2007 21:30:51 GMT
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Original-From:
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Juergen Stuber <JUERGEN@JSTUBER.NETsaynotospam>
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Viewed:
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4406 times
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Hi Nathan,
Nathan Anderson <nathan@anderson-net.com> writes:
> On Sun, 4 Feb 2007, Juergen Stuber wrote:
> >
> > actually for the adventurous hardware hacker
> > it might be possible to revive it using the ERASE pin.
>
> Fortunately, it looks like Atmel provided a back-door in hardware to reset
> it. I (carefully) opened up the NXT brick and (equally as carefully)
> shorted VCC_OUT (pin 8) with ERASE (pin 55), which LEGO thoughtfully
> traced to a nice open pad (J10)! :-) IIRC, this had to be done and held
> steadily in place before applying power.
clever solution.
I actually wondered how to do the debouncing,
to get the required (in bold face!) pulse of at least 50ms.
> Voila, as they say: I was greeted with the warm sound of
> steady clicking from the tiny NXT speaker.
:-)
Jürgen
--
Jürgen Stuber <juergen@jstuber.net>
http://www.jstuber.net/
gnupg key fingerprint = 2767 CA3C 5680 58BA 9A91 23D9 BED6 9A7A AF9E 68B4
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