Rockbox mail archive
Subject: RE: Long recording
From: Dave Jones (dave_at_hfpacoustical.com)
Well, after some experimentation trying to power the Archos from an
external battery pack (12V) through a DC-DC convertor to the DC input (9V
nominal) on the Archos, I realized this was just not a very good setup.
The combination of the voltage headroom required of the DC-DC convertor (to
output 9V it needed a 10.3V input, which gave my battery pack little room
to relax) and the (I assume) inefficiency of the archos internal stepdown
convertor gave me very short battery lives (only 8 hours on a 12000 mAh
I was limited to a 12V external battery pack, so I've just moved to an
efficient 12V - 5.4V convertor and tapped directly into the battery leads
on the Archos. It ain't pretty but it does give 3+ days of battery operation.
When used in combination with the record timer patch it makes for a great
long term monitoring device for acoustical studies...
At 08:41 AM 5/5/2003 -0400, you wrote:
>"an outboard battery pack" ???
>Details .... Please
>From: Dave Jones [mailto:dave_at_hfpacoustical.com]
>Sent: Friday, May 02, 2003 6:24 PM
>Subject: Re: Long recording
>With 1500 mAh batteries I've gotten record times of between 4 and 5
>hours. This was with an older daily build a few months ago.
>I've since moved to an outboard battery pack that gives me about three and
>a half days of recording...
>At 09:33 AM 5/2/2003 -0400, you wrote:
> >I asked this question a few weeks ago and received NO replies.
> >I suppose if my name was Bubbette instead of Bubba I might hear something.
> >Question: How long can you record w/rockbox on a full set of batteries?
> > I realize that battery mAh has a lot to do with it so
> >include your battery mAh.
>Dave Jones, Senior Project Consultant
>HFP Acoustical Consultants Inc.
>6001 Savoy Dr., Suite 115
>Houston, Texas 77036
Dave Jones, Senior Project Consultant
HFP Acoustical Consultants Inc.
6001 Savoy Dr., Suite 115
Houston, Texas 77036
Page was last modified "Jan 10 2012" The Rockbox Crew