What's the state of electronic paper tech these days?  It only requires 
power to change the display.  Sounds like it would be ideal for this 
sort of low power application.  Just a thought.

Dave Alitz

Donovan Niesen wrote:
> On 2/1/07, Jeremy <tclug at lizakowski.com> wrote:
>   
>> 35W is a huge amount to leave running in a car.  The blinking LED on a car
>> alarm consume maybe maybe as little as 5 milliamps considering the duty
>> cycle.
>>
>> When building a car computer, there are ways to get the OS and applications to
>> load fast.   Perhaps you don't need to leave the power on?
>>
>> If you really need the thing to run unattended, perhaps for remote access of
>> some kind, you might need to look at non-standard CPUs and use only an unlit
>> b/w LCD.
>>
>> Jeremy
>>
>> On Thursday 01 February 2007 12:12 pm, Donovan Niesen wrote:
>>     
>>> I'm considering a project that would involve connecting a very
>>> low-power Computer on Module and an LCD display inside a vehicle.  The
>>> vehicle will not be driven or possibly even started for an entire week
>>> so what I'm wondering is if anyone knows how long I might have on a
>>> fairly standard car battery if I'm using ~35 Watts from the LCD and
>>> the CoM?
>>>
>>> My goal is a full 7 days so if I need to use a lower power LCD so be
>>> it.  Otherwise I will need to find a different way to power the
>>> device.
>>>
>>> And yes, the CoM will be running Linux.
>>>       
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>>     
>
> Well the big idea is for cars that are being auctioned.  The display
> would be showing current bidding price, some specs, anything else that
> we might come up with.  Hence the need for it to be running 24/7 and
> hopefully for the long battery life.
>
>
>