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Rockbox mail archiveSubject: Re: Re[2]: 1,8" HDD for ajb ?Re: Re[2]: 1,8" HDD for ajb ?
From: roland <for_spam_at_gmx.de>
Date: Fri, 7 May 2004 09:16:31 +0200 no problem - you send me the ticket for a flight to northern chile ? :D ----- Original Message ----- From: "RudiS" <mailmetorudiS_at_gmx.ch> To: "Rockbox development" <rockbox_at_cool.haxx.se> Sent: Friday, May 07, 2004 1:19 AM Subject: Re[2]: 1,8" HDD for ajb ? > Hallo Roland, > > Could you test your HD as well as in 4700m altitude ? :-D > Then my problem should be solved too. > > RudiS > > Am Donnerstag, 6. Mai 2004 um 18:06 schrieben Sie: > > r> Hi! > r> Ordered a 1.8" Hitachi Travelstar C4K40 and got it delivered today. > >>From my first point of view: > r> works like a charm - and my feeling is, that my ajbrec is even more "responsive" - > r> i.e. when browsing/ffwing the songs, it seems to be a little bit quicker > r> than the 2.5" model i had before. > r> ssssiiiiiiiiiipp - much higher noise than a 2.5" hdd :) > > r> now i need to watch out for the 5->3.3V power converter to save real power and > r> get really long runtime.... :) > > r> btw: i wasn`t into "electronics" for some time now, could someone recommend > r> a good and cheap solution, to measure voltage/current with the pc (over a longer > r> time period) ? > r> a cheap multimeter with pc-interface with appropriate datalogging software ? > r> an a/d converter with usb interface and easy to use (turtle grahpics? ;) scripting?) > r> programming interface, to write your own datalogger ? i would probably buy such and > r> post the resulting current-diagrams. i don`t have my "conrad electronics" (german > r> radioshack equivalent) by hand - and browsing their website isn`t really fun. > > r> regards > r> roland > > > > > > r> ----- Original Message ----- > r> From: "roland" <for_spam_at_gmx.de> > r> To: "Rockbox development" <rockbox_at_cool.haxx.se>; <idc-dragon_at_gmx.de> > r> Sent: Thursday, April 22, 2004 8:35 PM > r> Subject: Re: 1,8" HDD for ajb ? > > > >> > The Player/Recorder models use the battery voltage directly, not so easy > >> > there. > >> we would need an additional dc/dc-converter, right ? > >> these exist in form of integrated circuits and have very few power consumption. > >> > >> these ones > >> http://www.maxim-ic.com/appnotes.cfm/appnote_number/725 > >> seem to be too "weak" for doing their job in an archos (hdd needs more current), > >> but maybe someone knows a cheap, powerful, low-power 5.0->3.3V converter-ic ? > >> > >> i think it`s difficult to give an estimation, how much power is being saved and > >> how much more runtime an ajb would get - but if it`s >3-4 hrs additional runtime, > >> i would probably buy such disk. > >> i did a quick compare - and it seems this hdd (at 3.3V) consumes half of the power > >> of an ordinary 2.5" hdd > >> so i think it`s worth to discuss further - isn`t it ? > >> changing the hdd to this model should probably give a SIGNIFICANT runtime benefit, > >> imho. > >> > >> regards > >> roland > >> > >> > >> > >> ----- Original Message ----- > >> From: "[IDC]Dragon" <idc-dragon_at_gmx.de> > >> To: "Rockbox development" <rockbox_at_cool.haxx.se> > >> Sent: Thursday, April 22, 2004 10:36 AM > >> Subject: Re: 1,8" HDD for ajb ? > >> > >> > >> > > Wouldn`t that fit into an archos , giving even longer runtime ? > >> > > > >> > > >> http://www.hitachigst.com/tech/techlib.nsf/techdocs/4B0BCB1DB47911A386256D5500494CDC/$file/HGSTTravelstarC4K40.PDF > >> > > looks like a standard 2,5"hdd mechanical interface to me. > >> > > >> > Yes it will fit, these drives are mechanically like half a 2.5" drive. The > >> > connector end is the same. > >> > The supply is nominally 3.3V now, but also tolerates 5V at the cost of > >> > higher consumption. > >> > If mounted into an FM/V2, you could modify the supply to give less than 5V. > >> > Those models have a DC/DC converter to make 5V from the LiIon voltage which > >> > can then be bypassed. > >> > The Player/Recorder models use the battery voltage directly, not so easy > >> > there. > >> > > >> > Jörg > >> > > >> > -- > >> > NEU : GMX Internet.FreeDSL > >> > Ab sofort DSL-Tarif ohne Grundgebühr: http://www.gmx.net/dsl > >> > > >> > _______________________________________________ > >> > http://cool.haxx.se/mailman/listinfo/rockbox > >> > > >> > > r> _______________________________________________ > r> http://cool.haxx.se/mailman/listinfo/rockbox > > > > -- > Mit freundlichen Grüssen > RudiS > > mailto:mailmetorudiS_at_gmx.ch > > _______________________________________________ > http://cool.haxx.se/mailman/listinfo/rockbox > _______________________________________________ http://cool.haxx.se/mailman/listinfo/rockbox Received on 2004-05-07 Page template was last modified "Tue Sep 7 00:00:02 2021" The Rockbox Crew -- Privacy Policy |