Just assume that it's not in a defined state?

On 4 May, 21:38, Tom=E1s =D3 h=C9ilidhe <t...@lavabit.com> wrote:
> On May 4, 8:27 pm, Dombo <do...@disposable.invalid> wrote:
>
> > You could save two I/O pins if connect the input buttons to a voltage
> > divider network on one side and the other side of the buttons to an
> > analog input of your uC.
>
> Thanks for pointing that out, it hadn't crossed my mind. I'm looking
> into it.
>
> Now I just need to find something frivolous to do with two extra
> pins :-D  Any ideas? I've already got seven segment displays and a
> piezo speaker. What else can I put on it? It's a shame they don't have
> chips that can give out a smell :P

Put half an amp through your LEDs without current limiting resistors
and you may create one ;->

s0lstice wrote:

> Put half an amp through your LEDs without current limiting resistors
> and you may create one ;->

Actually, I would expect that to produce a sound instead.  As in: PING 
and they're gone.

On 6 May, 21:39, Hans-Bernhard Br=F6ker <HBBroe...@t-online.de> wrote:
> s0lstice wrote:
> > Put half an amp through your LEDs without current limiting resistors
> > and you may create one ;->
>
> Actually, I would expect that to produce a sound instead.  As in: PING
> and they're gone.

It might not be the LED that goes.

s0lstice wrote:
> Hans-Bernhard Br&#4294967295;ker <HBBroe...@t-online.de> wrote:
>> s0lstice wrote:
>>
>>> Put half an amp through your LEDs without current limiting
>>> resistors and you may create one ;->
>>
>> Actually, I would expect that to produce a sound instead.  As in:
>> PING and they're gone.
> 
> It might not be the LED that goes.

Reminds me of the original IBM monochrome display for the PC.  Set
a wrong time or rep rate in the bios and the display cooks the
horizontal (I think) drive transistor.  

-- 
 [mail]: Chuck F (cbfalconer at maineline dot net) 
 [page]: <http://cbfalconer.home.att.net>
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** Posted from http://www.teranews.com **

On 2008-05-07, CBFalconer <cbfalconer@yahoo.com> wrote:

> Reminds me of the original IBM monochrome display for the PC.
> Set a wrong time or rep rate in the bios and the display cooks
> the horizontal (I think) drive transistor.  

Been there, done that.  Some of the registers in the original
mono display controller card were write-only.  Any accesses to
those register's addresses were handled as writes.  If you
tried to read them, you ended up writing unkown values.  I
attempted to read the wrong set of I/O addresses using debug,
and I let the smoke out of one of the high-voltage sections of
the display.

-- 
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