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. >>> >> _______________________________________________ >> TCLUG Mailing List - Minneapolis/St. Paul, Minnesota >> tclug-list at mn-linux.org >> http://mailman.mn-linux.org/mailman/listinfo/tclug-list >> >> > > 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. > > >